Class / Patent application number | Description | Number of patent applications / Date published |
585640000 | Using metal oxide catalyst | 83 |
20080228021 | Process For Converting Difficultly Convertible Oxygenates to Gasoline - Process for converting oxygenate compounds to hydrocarbons comprising the steps: (a) introducing a feed stream of synthesis gas to a synthesis section for the production of easily convertible oxygenates, (b) passing the effluent stream from said synthesis section containing easily convertible oxygenates to a gasoline synthesis section, (c) passing the effluent of said gasoline synthesis section to a separator and withdrawing from said separator hydrocarbons boiling in the gasoline boiling range, (d) admixing a recycle stream from the separator containing unconverted synthesis gas volatile hydrocarbons with the feed stream of synthesis gas of step (a), (e) introducing a feed containing difficulty convertible oxygenates to the synthesis section of step (a). | 09-18-2008 |
20080242910 | Conversion of Dimethylether to Propylene using Moving Bed Technology - The average cycle propylene selectivity of an oxygenate to propylene (OTP) process using one or more fixed beds of a dual-function oxygenate conversion catalyst is substantially enhanced by the use of moving bed reactor technology in the hydrocarbon synthesis portion of the OTP flow scheme in lieu of fixed bed technology coupled with the selection of a catalyst on-stream cycle time of 200 hours or less. Those provisions hold the build-up of coke deposits on the catalyst to a level which does not substantially degrade dual-function catalyst activity, oxygenate conversion and propylene selectivity, thereby enabling maintenance of propylene average cycle yield at essentially start-of-cycle levels. The propylene average cycle yield improvement enabled by the present invention over that achieved by the fixed bed system of the prior art using the same or a similar catalyst system is of the order of about 1.5 to 5.5 wt-% or more. | 10-02-2008 |
20080312485 | Method of Producing Propylene Containing Biomass-Origin Carbon - Ethanol obtained from ordinary biomass resources contains many impurities other than water and these impurities themselves or their decomposition products contaminate ethylene when the ethylene is produced by a dehydration reaction, whereby the activity of metathesis catalyst is adversely affected. A method for producing propylene of the present invention is characterized in that the ethanol obtained from biomass is converted to ethylene by a dehydration reaction, the ethylene is separated from the generated water, the separated ethylene is purified by adsorption in an adsorption tower filled with an adsorbent, and then a metathesis reaction is carried out along with a raw material containing n-butene. With the present invention, propylene having biomass-derived carbon and reduced-environmental burden can be efficiently produced without lowering the catalysis activity. | 12-18-2008 |
20090043143 | Dehydrogenation of mixed alcohols - The present invention relates to a process for the production of alkene(s) from a feedstock comprising of at least ethanol and/or propanol(s). | 02-12-2009 |
20090131730 | OXYGENATE CONVERSION USING BORON-CONTAINING MOLECULAR SIEVE CHA - A process for the production of light olefins from a feedstock comprising an oxygenate or mixture of oxygenates, the process comprising reacting the feedstock at effective conditions over a catalyst comprising boron-containing molecular sieve having the CHA crystal structure and comprising (1) silicon oxide and (2) boron oxide or a combination of boron oxide and aluminum oxide, iron oxide, titanium oxide, gallium oxide and mixtures thereof; and wherein the mole ratio of silicon oxide to boron oxide in said boron-containing molecular sieve is between 15 and 125. A method for production of light olefins, comprising selecting the catalyst and reacting a feedstock comprising an oxygenate or mixture of oxygenates, at effective conditions, over the catalyst. Also, a method for production of light olefins, comprising selecting the catalyst, selecting the oxygenate feedstock, and reacting the feedstock at effective conditions over the catalyst. | 05-21-2009 |
20090209798 | Enhancement of Molecular Sieve Performance - A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making the catalyst that has a higher content of the EL metal than is found in the principal part of the catalyst. The molecular sieve has predominantly a roughly rectangular parallelepiped morphology crystal structure with a lower fault density and a better selectivity for light olefins. | 08-20-2009 |
20090247803 | Process for Production of Triptane and Triptene - High octane C | 10-01-2009 |
20090275789 | Treatment Of Small Pore Molecular Sieves And Their Use In The Conversion Of Oxygenates To Olefins - A method is disclosed of treating a porous crystalline molecular sieve having a pore size less than or equal to about 5 Angstroms to decrease its coke selectivity in oxygenate to olefin conversion reactions. The method comprises contacting the molecular sieve with an acid having a kinetic diameter greater than or equal to that of acetic acid. | 11-05-2009 |
20090275790 | SYNTHESIS OF SAPO-34 WITH ESSENTIALLY PURE CHA FRAMEWORK - A process for producing an ElAPO molecular sieve with essentially pure CHA framework is disclosed. When El is silicon the process allows for a broad range of silicon content, and produces a catalyst with a high selectivity for the conversion of methanol to olefins. | 11-05-2009 |
20090281363 | PROCESS FOR PRODUCING ETHYLENE FROM ETHANOL COMBINING THE CATALYTIC CONVERSION OF HYDROCARBONS - A process for producing ethylene from ethanol combining the catalytic conversion of hydrocarbons: an ethanol feedstock is contacted with a Y-zeolite containing catalyst to give a product stream, and a coked catalyst and an target product of ethylene are obtained after separating the reaction stream; a hydrocarbon feedstock is contacted with a Y-zeolite containing catalyst to give a product stream, a spent catalyst and an oil vapor are obtained after separating the reaction stream, and the oil vapor is further separated to give the products such as gas, gasoline and the like; a part or all of the coked catalyst and a part or all of the spent catalyst enter the regenerator for the coke-burning regeneration, and the regenerated catalyst is divided into two portions, wherein one portion returns to be contacted with the hydrocarbon feedstock, and the other portion, after cooling, returns to be contacted with ethanol feedstock. This process not only reasonably utilizes the excessive thermal energy of the hydrocarbon conversion, but also solves the problem of heat supply for the conversion of ethanol, thus ensuring the continuous catalytic conversion of ethanol and generating enormous economic benefits. For the catalytic conversion of the ethanol, the content of ethylene is 95 vol % or more in the gas product; and the conversion of ethylene is not less than 99%. For the catalytic conversion of the hydrocarbons, the yield for the light olefins increases slightly by at least 2 mol %. | 11-12-2009 |
20090318742 | PROCESS FOR COMBINING THE CATALYTIC CONVERSION OF ORGANIC OXYGENATES AND THE CATALYTIC CONVERSION OF HYDROCARBONS - A process for combining the catalytic conversion of organic oxygenates and the catalytic conversion of hydrocarbons: an organic oxygenate feedstock is contacted with a Y-zeolite containing catalyst to produce a reaction stream, and a coked catalyst and a product stream are obtained after separating the reaction stream; a hydrocarbon feedstock is contacted with a Y-zeolite containing catalyst to produce a reaction stream, a spent catalyst and a reaction oil vapor are obtained after separating the reaction stream, and the reaction oil vapor is further separated to give the products such as gas, gasoline and the like; a part or all of the coked catalyst and a part or all of the spent catalyst enter the regenerator for the coke-burning regeneration, and the regenerated catalyst is divided into two portions, wherein one portion returns to be contacted with the hydrocarbon feedstock, and the other portion, after cooling, returns to be contacted with the organic oxygenate feedstock. This process not only reasonably utilizes the excessive thermal energy of the hydrocarbon conversion, but also solves the problem of heat supply for the conversion of the organic oxygenate, thus ensuring the continuous catalytic conversion of the organic oxygenate. | 12-24-2009 |
20090326299 | Use of a Catalyst Based on Zeolites in the Conversion of Oxygenates to Lower Olefins, and Associated Method - The invention relates to the use of a catalyst based on crystalline aluminosilicates for the conversion of oxygenates to lower olefins, the catalyst having an SiO | 12-31-2009 |
20090326300 | PROCESS FOR CRACKING TERT-ALKYL ETHERS THAT USE A MESOSTRUCTURED HYBRID ORGANIC-INORGANIC MATERIAL - A process for cracking tert-alkyl ether(s) selected from among tert-amyl methyl ether (TAME) and ethyl tert-amyl ether (ETAE) for the production of tertiary olefins comprising bringing said tert-alkyl ether(s) into contact with at least one catalyst that is formed by at least one mesostructured hybrid organic-inorganic material that consists of at least two spherical elementary particles, whereby each of said spherical particles consists of a mesostructured matrix with a silicon oxide base to which are linked organic groups with acid terminal reactive functions, said groups representing less than 20 mol % of said matrix that is present in each of said spherical elementary particles, which have a maximum diameter of between 50 nm and 200 μm. | 12-31-2009 |
20100022815 | PROCESS FOR PRODUCTION OF LOWER HYDROCARBONS AND APPARATUS FOR THE PRODUCTION - In a process for production of lower hydrocarbons from dimethyl ether and/or methanol and an apparatus for the production, the object is; to increase the selectivity of the reaction product to thereby produce a target product at a high final yield, to prolong the catalyst lifetime, and to improve the safety in the operation of the apparatus. An apparatus to be used includes: a reactor | 01-28-2010 |
20100121124 | HYDROCARBON CONVERSION USING MOLECULAR SIEVE SSZ-75 - The present invention relates to new crystalline molecular sieve SSZ-75 prepared using a tetramethylene-1,4-bis-(N-methylpyrrolidinium) dication as a structure-directing agent, and its use in catalysts for hydrocarbon conversion reactions. | 05-13-2010 |
20100152514 | Methods For Determining Efficacy Of Metal Oxide Co-Catalysts For Oxygenates-To-Olefins Reactions - The invention involves a process for converting an oxygenate-containing feed into an olefin-containing product comprising: (a) providing a co-catalyst oxide of a metal from Groups 2-4 of the Periodic Table of Elements, Lanthanides, Actinides, and combinations thereof, (b) contacting the metal oxide with nitromethane under conditions sufficient for the nitromethane to adsorb onto the metal oxide; (c) analyzing the nitromethane-adsorbed metal oxide using NMR to determine a basic site density of the metal oxide; (d) providing a catalyst system comprising a primary catalyst comprising aluminosilicates, aluminophosphates, silicoaluminophosphates, and metal-containing derivatives and combinations thereof, and the co-catalyst metal oxide whose basic site density is ≧0.085 mmol/g and whose BET surface area is ≧20 m | 06-17-2010 |
20100197986 | PROPYLENE PRODUCTION PROCESS - The present invention provides a process for producing propylene, comprising contacting at least one of raw material selected from the group consisting of ethylene and ethanol with a catalyst containing a medium pore diameter zeolite in a fluidized bed reactor wherein the catalyst containing the medium pore diameter zeolite satisfies the following (a) through (e): | 08-05-2010 |
20100210887 | CATALYST FOR PRODUCING A LIGHT OLEFIN AND METHOD FOR PRODUCING A LIGHT OLEFIN - A catalyst for producing a light olefin including a pentasil-type zeolite, alkaline earth metal atoms and aluminum atoms contained in the pentasil-type zeolite satisfying the following atomic ratio: [alkaline earth metal atom/aluminum atom]=0.2 to 15, the average value of the gradient of an adsorption isotherm of the pentasil-type zeolite measured by the nitrogen adsorption method being 30 or more at a relative pressure of 0.2 to 0.7. | 08-19-2010 |
20100261943 | PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - Process for the preparation of an olefinic product, which process comprises contacting a reaction mixture comprising an oxygenate feedstock and an olefinic component with an oxygenate conversion catalyst comprising a molecular sieve having one-dimensional 10-membered ring channels, in a flow-through reactor unit defining a flow trajectory for fluids towards a downstream outlet for an olefinic reaction effluent from the flow-through reactor unit, wherein an olefinic co-feed is added at an upstream olefin feed inlet of the flow-through reactor unit, and wherein oxygenate feedstock is admitted to the reactor such that it is added to the reaction mixture at a plurality of locations along the feed trajectory. | 10-14-2010 |
20100268009 | CATALYST PARTICLES, PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT, AND PROCESS FOR THE PREPARATION OF AN OXYGENATE CONVERSION CATALYST - Catalyst particles comprising a first molecular sieve having one-dimensional 10-membered ring channels, and a second molecular sieve having more-dimensional channels; a process for the preparation of such catalyst particles; and a process for the preparation of an olefinic product, comprising reacting an oxygenate feedstock in a reaction zone in the presence of catalyst particles of the invention. | 10-21-2010 |
20100292521 | SEPARATING OLEFIN STREAMS - This invention pertains to separating an olefin stream into at least two olefin streams. The olefin stream that is to be separated is low in diene composition, which allows the olefin stream to be compressed at a relatively high temperature without causing fouling problems in the compressor system. The invention is particularly relevant to separating olefins obtained from an oxygen to olefins unit. | 11-18-2010 |
20100331597 | Catalyst And Once-Through Reactor-Regenerator Process For Oxygenate To Olefins Production - Disclosed herein is a method of converting oxygenates to olefins comprising contacting an oxygenate stream with an acidic high silica chabazite catalyst in one or more oxygenate-to-olefins reactors; circulating greater than from 80% of the catalyst to one or more catalyst regenerators to form regenerated catalyst; circulating the regenerated catalyst, preferably the same amount of regenerated catalyst, back to the oxygenate-to-olefins reactor to contact an oxygenate stream; and isolating a stream of olefins from the one or more oxygenate-to-olefins reactors. | 12-30-2010 |
20110021857 | Method And Apparatus For Regenerating Catalyst During Oxygenates To Olefins Reaction - Disclosed herein is a method of recovery of the activity of a molecular sieve catalyst following use of the catalyst in an OTO conversion process. This is achieved by a regeneration apparatus and a method of regenerating a molecular sieve catalyst, comprising two stages. In a pretreatment stage, the catalyst is pretreated under pretreatment conditions by heating the catalyst to a temperature of between 320° C. to 700° C. in an oxygen depleted medium for a residence time of between 1 minute to two hours; and, in a regeneration stage, the catalyst is regenerated under regeneration conditions by heating the catalyst at a temperature of between 200° C. to 700° C. in an oxidizing medium for a residence time of between 1 to 60 minutes. | 01-27-2011 |
20110034750 | PROCESS FOR THE PRODUCTION OF LIGHT OLEFINS FROM ETHANOL IN THE PRESENCE OF A MACROPOROUS CATALYST THAT COMES IN THE FORM OF BALLS - A process for the production of C3-C6 light olefins from ethanol is described, and said process comprises at least the passage of a feedstock that contains ethanol into at least one reaction unit that is provided with at least one catalyst that comes in the form of spherical balls with a diameter of between 1 and 3 mm, each of said spherical balls comprising at least one zeolite and at least one alumina-based substrate and having a pore distribution such that the macropore volume that is measured by mercury porosimetry is between 0.10 and 0.20 ml/g and the mesopore volume that is measured by mercury porosimetry is between 0.25 and 0.35 ml/g. | 02-10-2011 |
20110092757 | ZEOLITE-CONTAINING CATALYST AND METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING PROPYLENE - The present invention provides a zeolite-containing catalyst having excellent shape, fluidity and mechanical strength as a catalyst for a fluidized bed reaction. The present invention provides a zeolite-containing catalyst which is a particulate catalyst containing zeolite and silica, wherein the catalyst has an average particle diameter of 20 to 300 μm and the ratio of the void area in the cross-section of the particle is 30% or less relative to the cross-section area of the particle. | 04-21-2011 |
20110098519 | MODIFIED CATALYST COMPOSITION FOR CONVERSION OF ALCOHOL TO ALKENE - A catalyst composition for dehydration of an alcohol to prepare an alkene is provided. The catalyst composition comprises a catalyst and a modifying agent which is phosphoric acid, sulfuric acid or tungsten trioxide, or a derivative thereof. A process for preparing an alkene by dehydration of an alcohol is also provided. The process comprises mixing one or more alcohols and optionally water and the catalyst composition. | 04-28-2011 |
20110112350 | Intergrown Molecular Sieve, Its Synthesis and Its Use in the Conversion of Oxygenates to Olefins - A molecular sieve comprises at least one intergrown phase of an AFX framework-type molecular sieve and a CHA framework-type molecular sieve and is conveniently synthesized using a combination of N,N,N′N′-tetramethylhexane-1,6-diamine and N,N-dimethylcyclohexylamine as organic directing agents. | 05-12-2011 |
20110152596 | CATALYST AND PROCESS FOR PREPARING ISOOLEFINS - A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst. | 06-23-2011 |
20120136190 | PRODUCTION OF 3-METHYLBUT-1-EN BY MEANS OF DEHYDRATION OF 3-METHYLBUTANE-1-OL - The invention relates to a process for preparing 3-methyl-1-butene by dehydration of 3-methyl-1-butanol over an aluminium-containing oxide in the temperature range from 200 to 450° C. in the gas phase or mixed liquid/gas phase, characterized in that an aluminium-containing oxide having a predominantly mesoporous pore structure whose: | 05-31-2012 |
20120157741 | Synthesis of Silicoaluminophosphate Having Lev Framework-Type - A process for producing a silicoaluminophosphate molecular sieve having the LEV framework-type employs at least one source of triethylmethylammonium, R | 06-21-2012 |
20120253091 | METHOD FOR MAKING HYDROCARBONS BY USING A LIPID DERIVED FROM A BIOLOGICAL ORGANISIM AND HYDROTALCITE - The present invention relates to a method in which a catalytic reaction is used in order to produce hydrocarbons from renewable starting material derived from biological organisms such as vegetable lipids, animal lipids, and lipids extracted from macroalgae and microalgae, and more specifically relates to a method for selectively making a hydrocarbon, which is suitable for making gasoline or diesel, by removing the oxygen contained in the starting material without consuming hydrogen. In the present invention, the production takes place by bringing the starting material into contact with hydrotalcite, which constitutes a catalyst, thereby removing oxygen via a decarboxylation or decarbonylation reaction; and the starting material is one or more such material selected from triglycerides, fatty acids, and fatty acid derivatives obtained from a renewable source of supply originating from a biological organism. | 10-04-2012 |
20120271089 | PROCESS FOR THE DEHYDRATION OF AQUEOUS BIO-DERIVED TERMINAL ALCOHOLS TO TERMINAL ALKENES - A method and apparatus for dehydrating bio-1-alcohols to bio-l-alkenes with high selectivity. The bio-1-alkenes are useful in preparing high flashpoint diesel and jet biofuels which are useful to civilian and military applications. Furthermore, the bio-1-alkenes may be converted to biolubricants useful in the transporation sector and other areas requiring high purity/thermally stable lubricants. | 10-25-2012 |
20120330080 | CATALYST COMPOSITION FOR DIRECT CONVERSION OF ETHANOL TO PROPYLENE - A process to prepare propylene showing desirably increased selectivity comprises contacting, at an elevated temperature, ethanol and a rhenium oxide-modified ZSM-5 zeolite catalyst, under conditions suitable to form propylene. The rhenium oxide-modified ZSM-5 zeolite catalyst may be prepared by impregnating, in an aqueous or organic medium, a ZSM-5 zeolite with a rhenium source, under conditions suitable to form a catalyst precursor, and calcining the catalyst precursor under conditions suitable to form a rhenium oxide-modified ZSM-5 zeolite catalyst. | 12-27-2012 |
20130012749 | CATALYTIC COMPOSITION FOR PRODUCTION OF OLEFINS WITH DECREASED OXYGENATE BYPRODUCTS - Catalytic composition for production of olefins and methods of using same to decrease production of oxygenate byproducts. The catalytic composition includes an admixture of an alumina dehydration catalyst and at least one additional metal oxide. | 01-10-2013 |
20130066129 | CATALYST FOR PROPYLENE PRODUCTION, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING PROPYLENE - Disclosed is a propylene production catalyst for producing propylene from one or more selected from a group consisting of methanol, dimethyl ether and olefins having from 4 to 8 carbon atoms. The catalyst comprises a binderless crystalline aluminosilicate shaped body having a silicon/aluminium atomic ratio of from 500 to 10000, in which the crystalline aluminosilicate contains an MFI-type crystal structure and/or an MEL-type crystal structure. The catalyst reduces the production amount of ethylene, paraffin components such as propane, and aromatic components, and increases the propylene yield and the propylene/propane ratio, and the catalyst life is long. | 03-14-2013 |
20130090510 | PROCESS FOR DEHYDRATION OF DILUTE ETHANOL INTO ETHYLENE WITH LOW ENERGY CONSUMPTION WITHOUT RECYCLING OF WATER - A process for dehydration of an ethanol feedstock into ethylene, comprising the vaporization of said dilute hydrated ethanol feedstock in an exchanger, with heat exchange with the effluent that is obtained from a last reactor, with said mixture being introduced into said vaporization stage at a pressure that is lower than the pressure of the effluent that is obtained from the last reactor, the compression of the mixture that is vaporized in a compressor, the introduction of the vaporized and compressed mixture, into at least one adiabatic reactor that contains at least one dehydration catalyst. | 04-11-2013 |
20130137914 | PROCESS TO MAKE PROPYLENE FROM ETHYLENE AND EITHER DIMETHYL ETHER, OR METHANOL AND DIMETHYL ETHER - The present invention is a process to make propylene comprising: | 05-30-2013 |
20130172652 | PROCESS FOR THE PREPARATION OF A LOWER OLEFIN PRODUCT - A process for the preparation of an olefin product comprising ethylene, which process comprises the steps of: a) converting an oxygenate feedstock in an oxygenate-to-olefins conversion system, comprising a reaction zone in which an oxygenate feedstock is contacted with an oxygenate conversion catalyst under oxygenate conversion conditions, to obtain a conversion effluent comprising ethylene and/or propylene; b) separating at least a portion of the propylene from the conversion effluent to form a propylene stream; c) separating the remainder of the olefins from the conversion effluent; and d) recycling at least a portion of the propylene stream to step a). | 07-04-2013 |
20130178681 | START-UP METHOD FOR REACTION-REGENERATION UNIT USED TO PREPARE LIGHT OLEFINS FROM METHANOL - The invention provides a start-up method for a reaction-regeneration unit for preparing light olefins from methanol, which comprises: (a) heating a regenerator with an auxiliary combustion chamber and a reactor with a start-up furnace; (b) charging a catalyst into the regenerator and reactor; (c) closing a spent catalyst slide valve and a regenerated catalyst slide valve after the reactor reaches about 350° C. or more; (d) feeding methanol to the reactor after the dense phase stage of the regenerator reaches about 350° C. or more; (e) opening the spent catalyst slide valve and introducing a carbon deposited catalyst from the reactor to the regenerator after the dense phase stage reaches about 400° C. or more and the average amount of carbon deposits on the catalyst in the reactor reaches about 2.5% or more; (f) raising the regenerator to above about 580° C.; and (g) stopping the start-up furnace and auxiliary combustion chamber. | 07-11-2013 |
20130197291 | METHOD FOR MAKING A CATALYST COMPRISING A PHOSPHORUS MODIFIED ZEOLITE TO BE USED IN AN ALCOHOLS DEHYDRATION PROCESS - The present invention is the use of a catalyst to convert an alcohol into light olefins in a dehydration process wherein said catalyst comprises a phosphorus modified zeolite and is made by a method comprising the following steps in this order,
| 08-01-2013 |
20130204061 | METHOD FOR MAKING A CATALYST COMPRISING A PHOSPHORUS MODIFIED ZEOLITE TO BE USED IN A MTO PROCESS - The present invention is the use of a catalyst in a MTO process to convert an alcohol or an ether into light olefins wherein said catalyst comprises a phosphorus modified zeolite and is made by a method comprising the following steps in this order,
| 08-08-2013 |
20130211170 | ISOPROPYL ALCOHOL-PRODUCING BACTERIUM HAVING IMPROVED PRODUCTIVITY BY GNTR DESTRUCTION - An isopropyl alcohol-producing | 08-15-2013 |
20130217943 | DEHYDRATION OF ALCOHOLS ON ACIDIC CATALYSTS - The present invention is a process for the dehydration of an alcohol having at least 2 carbon atoms to make the corresponding olefin, comprising:
| 08-22-2013 |
20130225893 | PROCESS FOR THE PREPARATION OF OLEFINS - Process for the preparation of olefins comprising introducing an oxygenate and/or olefinic feed into a reactor; reacting the oxygenate and/or olefinic feed in the reactor in the presence of a molecular sieve catalyst to form a mixture which comprises olefins and at least partially coked catalyst; separating olefins and at least partially coked catalyst; recovering olefins; and controlling the temperature of the oxygenate and/or olefinic feed to be introduced into the reactor on the basis of the temperature of the mixture formed in the reaction and/or the olefins obtained. | 08-29-2013 |
20130225894 | PROCESS FOR THE PREPARATION OF OLEFINS - Process for the preparation of olefins, which process comprising introducing an oxygenate and/or olefinic feed through introduction means into a reactor; reacting the oxygenate and/or olefinic feed in the reactor in the presence of a molecular sieve catalyst to form a mixture with a resulting gas superficial velocity which mixture comprises olefins and at least partially coked catalyst; separating olefins and at least partially coked catalyst; recovering olefins; and controlling the gas superficial velocity of the mixture at a predetermined level in the reactor on the basis of the inlet mass gas flow rate of the feed. | 08-29-2013 |
20130225895 | PROCESS FOR THE PREPARATION OF OLEFINS - Process for the preparation of olefins comprising reacting an oxygenate and/or olefinic feed in a reactor in the presence of a molecular sieve catalyst to form a mixture which comprises olefins and at least partially coked catalyst; separating olefins and at least partially coked catalyst as obtained; passing the at least partially coked catalyst to a regenerator; introducing into the regenerator an oxygen-containing gas to regenerate the at least partially coked catalyst, thereby producing a gaseous mixture and at least partially regenerated catalyst; analysing the at least partially regenerated catalyst to control the burning rate of the coke present on the at least partially coked catalyst in the regenerator by adjusting one or more conditions of the regeneration of the at least partially coked catalyst on the basis of the analysis of the at least partially regenerated catalyst; and passing the at least partially regenerated catalyst to the reactor. | 08-29-2013 |
20130225896 | PROCESS FOR THE PREPARATION OF OLEFINS - Process for the preparation of olefins comprising reacting an oxygenate and/or olefinic feed in a reactor in the presence of a molecular sieve catalyst to form a mixture which comprises olefins and at least partially coked catalyst;
| 08-29-2013 |
20130231515 | SILICA COMPOSITE, METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING PROPYLENE USING THE SILICA COMPOSITE - The present invention provides a method for producing a silica composite by the steps of:
| 09-05-2013 |
20130338419 | Production of Olefins - A process for converting a hydrocarbon feedstock to provide an effluent containing light olefins, the process comprising passing a hydrocarbon feedstock, the feedstock containing at least one C | 12-19-2013 |
20140058180 | MODIFIED CATALYST FOR CONVERTING OXYGENATES TO OLEFINS - The present invention relates to a new process for producing zeolite-containing catalysts, in which a modification with phosphorus-containing components is carried out, the catalyst obtainable thereby, and its use as catalyst in a process for producing lower olefins from oxygenates. The modification comprises removing weakly bound phosphorus-containing species by treatment with an aqueous solution. | 02-27-2014 |
20140058181 | PROCESS FOR MANUFACTURE OF A ZEOLITE BASED CATALYST FOR THE CONVERSION OF METHANOL TO OLEFINS - The present invention relates to a process for preparing phosphorus containing zeolite type catalysts based on crystalline aluminosilicates, the catalysts of this process and the use of these catalysts for the conversion of methanol to olefins. | 02-27-2014 |
20140107387 | PROCESSES FOR PRODUCTION OF ISOBUTENE AND TERTIARY BUTANOL - An object of the present invention is to provide, for the production of isobutene, a high-yielding, highly-selective, and long-term stable production process of isobutene from TBA. With respect to the production of TBA, an object of the present invention is to provide a TBA production process in which, through long-term stable maintenance of a high reaction activity, long-term continuous operation is enabled and the productivity is improved. The present invention discloses a process for producing isobutene that employs a dehydration temperature of from 200 to 450° C. in use of an alumina catalyst that contains a Na content of 0.6% by weight or less in terms of NaO | 04-17-2014 |
20140135556 | Production and Use of a Zeolitic Material in a Process for the Conversion of Oxygenates to Olefins - Described is a process for the production of a zeolitic material having an MFI, MEL, and/or MWW-type framework structure comprising YO | 05-15-2014 |
20140142361 | Process for the Conversion of Oxygenates to Olefins - The present invention relates to a process for the conversion of oxygenates to olefins comprising
| 05-22-2014 |
20140148631 | PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE - The present invention provides a process for preparing ethylene and/or propylene, wherein an oxygenate feedstock is contacted with a zeolite-comprising catalyst at a temperature in the range of from 500 to 700° C. to obtain a reactor effluent comprising ethylene and/or propylene and the oxygenate feedstock is contacted with the catalyst in a riser reactor having a reactor wall defining a flow trajectory towards a downstream outlet for reactor effluent, wherein at least oxygenate feedstock and catalyst are provided at one or more upstream inlets of the riser reactor and wherein C5 olefins are admitted to the riser reactor at one or more of locations along the length of the flow trajectory. The invention further provides a reaction system suitable for preparing ethylene and propylene. | 05-29-2014 |
20140171713 | NANO SAPO-35 AND METHOD OF MAKING - A porous crystalline nano metallo-alumino-phosphate molecular sieve is described. The molecular sieve has a framework composition on an anhydrous and calcined basis expressed by an empirical formula | 06-19-2014 |
20140179972 | PROCESS AND REACTOR FOR DEHYDRATION OF PROPANOL TO PROPYLENE - A reactor design and configuration and a process for the catalytic dehydration of propanol to propylene where the reactor train is comprised of a multi-stage single reactor vessel or multiple reactor vessels wherein each stage and/or vessel has different length, internal diameter, and volume than the other stages and/or vessels and in addition the stages and/or reactor vessels are connected in series or in parallel arrangement, preferably used with an improved means of introducing the propanol feedstock and a heat carrying inert gas to the improved reactor train. | 06-26-2014 |
20140206918 | SILICOMETALLOPHOSPHATE MOLECULAR SIEVES, METHOD OF PREPARATION AND USE - A new family of crystalline microporous silicometallophosphates designated MAPSO-64 and modified forms thereof have been synthesized. These silicometallophosphates are represented by the empirical formula | 07-24-2014 |
20140206919 | METALLOPHOSPHATE MOLECULAR SIEVES, METHOD OF PREPARATION AND USE - A new family of crystalline microporous metallophosphates designated AlPO-67 has been synthesized. These metallophosphates are represented by the empirical formula | 07-24-2014 |
20140243570 | Use of a Catalyst Comprising a Phosphorous Modified Zeolite in an Alcohol Dehydration Process - A catalyst can be used to convert an alcohol in a dehydration process into an olefin having the same number of carbon atoms as the alcohol. The catalyst can include a phosphorus modified zeolite made by providing a zeolite with at least one ten member ring in the structure, steaming the zeolite, mixing the zeolite with binders and shaping additives, and shaping the zeolite. An ion-exchange step can be performed, and the shaped catalyst can be steamed. Phosphorus can be introduced on the catalyst at an amount of at least 0.1 wt %, such as by dry impregnation or chemical vapor deposition. A metal can be introduced. The catalyst can be washed and/or calcinated, and steamed in an equilibration step. The steaming severity (X) can be at least about 2. The catalyst can be steamed at a temperature above 625° C., such as a temperature ranging from 700 to 800° C. | 08-28-2014 |
20140275683 | Catalyst for Preparing Isobutene by Dissociation of Methyl Tert-Butyl Ether, Preparation Method and Use Thereof - Disclosed is a catalyst for preparing isobutene by dissociation of methyl tert-butyl ether, the catalyst comprising amorphous silica alumina and a silicalite-1 molecular sieve, wherein the total IR acid amount of weak acids in the catalyst is in a range from 0.020 to 0.080 mmol/g, and the ratio of B acid/L acid of the weak acids is in a range from 2.5:1 to 4.0:1. Also provided is a method of preparing the catalyst and the use thereof. The catalyst has a high selectivity with respect to isobutene, and high conversion of methyl tert-butyl ether, and can also effectively inhibit formation of the by-product dimethyl ether. | 09-18-2014 |
20140296603 | REACTOR MULTI-PASS GRIDS FOR IMPROVED CATALYST HYDRODYNAMICS - A process and device for the flow of catalyst in a reactor is presented. The device includes a series of grids within a reactor vessel, where each grid includes small openings for the passage of gas and some catalyst particles, and larger openings for the more continuous passage of catalyst. The grids span horizontally across the vessel, and are spaced vertically apart to provide for the flow of catalyst down through the reactor | 10-02-2014 |
20140364670 | PROCESS FOR PREPARING ETHYLENE AND OTHER OLEFINS FROM AQUEOUS SOLUTIONS OF THE CORRESPONDING ALCOHOLS - The invention relates to a process for the continuous production of one or more olefins from an aqueous solution of corresponding alcohol(s) comprising the following steps:
| 12-11-2014 |
20150038756 | ITQ-49 MATERIAL, METHOD FOR THE PRODUCTION THEREOF AND USE OF SAME - The present invention refers to a microporous crystalline material, to the method for the production thereof and to the use of same, the material having a composition: | 02-05-2015 |
20150057481 | METHOD FOR DEHYDRATING AND ISOMERISING ALCOHOLS USING A NON-ZEOLITE ALUMINOSILICATE SOLID - Process for simultaneous dehydration and skeletal isomerization of a feedstock that comprises at least one C | 02-26-2015 |
20150099915 | PROCESS FOR PRODUCING SHORT-CHAIN OLEFINS WITH PROLONGED CYCLE TIME - A process for producing short-chain olefins by conversion of oxygenates in a multi-stage fixed-bed reactor, in which the individual stages for reaction zones are covered with beds of a granular, form-selective zeolite catalyst and the feed mixture containing oxygenates is added distributed over the reaction stages. An increase of the availability of the fixed-bed reactor for the olefin production with the same or an increased yield of short-chain olefins is achieved in that one or more reaction zones are charged with a distinctly reduced mass flow of the feed mixture containing oxygenates, wherein the reduced mass flow fraction is distributed over other reaction zones. | 04-09-2015 |
20150133708 | AN APPARATUS FOR PRODUCING ETHYLENE AND A PRODUCING METHOD THEREOF - An apparatus for producing ethylene includes: a reactor; a first separation column, connected to the reactor; a second separation column, the upper part of the second separation column being connected to the bottom of the first separation column, and the top of the second separation column being connected to the lower part of the first separation column; a first condenser, an inlet of the first condenser being connected to the top of the first separation column, and an outlet of the first condenser being connected to the upper part of the first separation column; and a third separation column, used for receiving a second part of a first condensate from the condenser and separating the received part. A method for producing ethylene using the aforementioned apparatus is also described. | 05-14-2015 |
20150148579 | METHOD FOR MAKING A CATALYST COMPRISING A PHOSPHORUS MODIFIED ZEOLITE TO BE USED IN A MTO PROCESS - The present invention is the use of a catalyst in a MTO process to convert an alcohol or an ether into light olefins wherein said catalyst comprises a phosphorus modified zeolite and is made by a method comprising the following steps in this order, | 05-28-2015 |
20150148580 | METHOD FOR PRODUCING OLEFIN - Disclosed are a catalyst for producing, from an alcohol, an olefin whose number of carbon atoms is at least one more than the number of carbon atoms of the alcohol, wherein at least the surface of the catalyst is substantially composed of zirconium oxide; a method for producing an olefin using the same; and so on. | 05-28-2015 |
20150291488 | PROCESS FOR REMOVING OXYGENATES FROM AN OLEFIN STREAM - The invention removes oxygenate from an olefin rich gas stream, the process comprising:
| 10-15-2015 |
20150336857 | PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE - The present invention provides a process for preparing ethylene and/or propylene, wherein an oxygenate feedstock is contacted with a molecular sieve-comprising catalyst at a temperature in the range of from 350 to 500° C. to obtain a reactor effluent comprising ethylene and/or propylene and the oxygenate feedstock is contacted with the catalyst in a riser reactor having a reactor wall defining a flow trajectory towards a downstream outlet for reactor effluent, wherein at least oxygenate feedstock and catalyst are provided at one or more upstream inlets of the riser reactor and wherein a water quench medium is admitted to the riser reactor at one or more of locations along the length of the flow trajectory through a plurality of inlets distributed along the periphery of the reactor wall. The invention further provides a reaction system suitable for preparing ethylene and propylene. | 11-26-2015 |
20150344381 | PROCESS AND PLANT FOR PRODUCING OLEFINS FROM OXYGENATES - A process for producing olefins from oxygenates comprises the following steps:
| 12-03-2015 |
20150352537 | CRYSTALLINE POROUS SILICOALUMINOPHOSPHATES AND METAL-SUBSTITUTED SILICOALUMINOPHOSPHATES WITH A HIERARCHICAL PORE STRUCTURE COMPRISING MICROPORES AND MESOPORES, METHODS FOR MAKING THE SAME, AND METHODS FOR CONVERTING OXYGENATES TO OLEFINS VIA REACTIONS CATALYZED BY THE SAME - Crystalline porous silicoaluminophosphates and metal-substituted silicoaluminophosphates with a hierarchical pore structure comprising micropores and mesopores, methods for making the same, and methods for converting an oxygenate to an olefin via reactions catalyzed by the same are provided. In an embodiment, crystalline porous silicoaluminophosphates with a hierarchical pore structure have mesopores with a minimum dimension of about 25 Å to about 475 Å that constitute at least about 7% of the total pore volume. | 12-10-2015 |
20150367333 | CATALYST WITH HIGH C4 OLEFIN SELECTIVITY FOR PREPARING OLEFIN FROM METHANOL AND PREPARATION METHOD THEREOF - A method of preparing a catalyst, comprising: (1) mixing a ZSM-5 molecular sieve, a phosphorus source, a matrix material, a bonding agent and water to formulate an aqueous slurry, wherein the total content of the components except for water is 20-50 wt % based on the total weight of the aqueous slurry; (2) spray drying the slurry obtained in step (1) to obtain a granular intermediate product; and (3) calcining the granular intermediate product obtained in step (2) to obtain the catalyst used for preparing olefin from methanol in a fluid bed. The invention also provides a catalyst prepared according to said method, and a process of preparing olefin from methanol using said catalyst. In the methanol-to-olefin process, the conversion of methanol is >99%; the propylene selectivity is high; and the C4 selectivity is up to 32%. | 12-24-2015 |
20160009609 | METHANOL TO OLEFINS PROCESS | 01-14-2016 |
20160016861 | Dehydration of Alcohols on a Crystalline Silicate of Low Si/Al Ratio - A process for the dehydration of an alcohol having at least 2 carbon atoms to make a corresponding olefin may include introducing in a reactor a stream (A) containing the alcohol, optionally water, and optionally an inert component. The stream (A) may be contacted with a catalyst in the reactor at conditions effective to dehydrate at least a portion of the alcohol to make the corresponding olefin. The process includes recovering from the reactor an olefin containing stream (B). The catalyst may be a crystalline silicate, dealuminated crystalline silicate, or phosphorus modified crystalline silicate, each of the group FER, MWW, EUO, MFS, ZSM-48, MTT or TON having Si/Al ranging from 25 to 90. The weight hourly space velocity (WHSV) of the alcohol may be at least 4 h | 01-21-2016 |
20160046542 | PROCESS FOR PRODUCING SHORT-CHAIN OLEFINS FROM OXYGENATES - There is proposed a process for producing short-chain olefins by conversion of oxygenates in a multi-stage fixed-bed reactor (OTO reactor) with reaction zones each operated adiabatically, in which the individual stages or reaction zones are covered with beds of a granular, form-selective zeolite catalyst which previously has been subjected to a steam pretreatment in an external, isothermally or quasi-isothermally operated steam pretreatment reactor. By means of the external steam pretreatment according to the invention, higher lifetimes of the catalyst used are obtained as compared to a steam pretreatment in the OTO reactor. The availability of the OTO reactor for the olefin production is increased. | 02-18-2016 |
20160101415 | ORGANIC-FREE SYNTHESIS OF SMALL PORE ZEOLITE CATALYSTS - The present invention is directed to methods of enhancing the catalytic activities of 8-MR zeolites, the methods comprising treating a precursor 8-MR zeolite that has been prepared without the use of an organic structure directing agent and having an Si/Al ratio of less than 5, with high temperature steam for a period of time sufficient to extract at least a portion of the aluminum from the precursor zeolite framework to form a steam-treated zeolite having an Si/tetrahedral Al ratio of greater than 5, wherein the steam has a temperature in a range of from about 350° C. to about 850° C. The compositions produced by these methods and their use in catalytic reactions are also provided. | 04-14-2016 |
20160108322 | CATALYST AND PROCESS FOR DEOXYGENATION AND CONVERSION OF BIO-DERIVED FEEDSTOCKS - A catalyst and process for the deoxygenation and conversion of bio-derived feedstocks. The catalyst comprises a silica-alumina support having specifically defined physical properties and a molybdenum component but a material absence of nickel. The process involves the processing of a bio-derived feedstock having an oxygen content to yield a conversion product having an exceptional distillation profile and physical properties and a substantially reduced oxygen content. | 04-21-2016 |
20160114314 | MONOLITH STRUCTURE LOADED WITH METAL PROMOTED NANOZEOLITES FOR ENHANCED PROPYLENE SELECTIVITY IN METHANOL CONVERSION - A catalyst system and a process for methanol to light olefin conversion with enhanced selectivity towards propylene. The catalyst system comprises a honeycomb monolith catalyst support coated with nanozeolite catalysts on the edges and inside the channels of the support structure. The nanozeolite catalysts have been pre-modified with metal. The catalyst system gives higher hydrothermal stability to the catalyst compared to randomly packed pellet catalyst and allows methanol to be converted to predominantly propylene at a low temperature, with decreased selectivity towards C | 04-28-2016 |
20160122257 | PRODUCTION METHOD FOR OLEFIN, AND DEHYDRATION CATALYST EMPLOYED IN SAME - An object of the present invention is to provide a method of producing a corresponding olefin such as propylene with a high activity and a high selectivity even in a high LHSV range by an intramolecular dehydration reaction of an alcohol such as isopropyl alcohol. The present invention provides a method of producing an olefin represented by General Formula (II) below from an alcohol represented by General Formula (I) below, which method uses, as a dehydration catalyst, a chemically treated silica gel (X) in which an aluminum compound is supported onto a silica gel (A) with an average fine pore diameter of 10 to 50 nm in the amount of 1,000 to 10,000 ppm by weight in terms of aluminum element. (In General Formulae (I) and (II), R | 05-05-2016 |
20160251277 | A PROCESS FOR CONVERTING OXYGENATES TO OLEFINS | 09-01-2016 |
20220135496 | HIGH PURITY ISOAMYLENE PRODUCTION FROM TERTIARY AMYL METHYL ETHER DECOMPOSITION - Systems and methods for the production of a high purity isoamylene product. The isoamylene in a mixed hydrocarbon stream may initially be converted to TAME via etherification, and a subsequent decomposition of the TAME may result in a high purity isoamylene stream with very low impurities that is suitable for a variety of petrochemical applications, such as for use in the production of fragrances, pesticides, peroxides, polymer antioxidants, UV stabilizers and hydrocarbon resins. | 05-05-2022 |