Class / Patent application number | Description | Number of patent applications / Date published |
562542000 | Of hydrocarbon | 50 |
20090018362 | ACRYLIC ACID PREPARATION METHOD - The invention relates to a method for preparing acrylic acid from propylene, comprising the oxidation of propylene to acrolein and a second step comprising the oxidation of acrolein to acrylic acid, including a glycerol dehydration step preformed in the presence of a gas containing propylene and, more specifically, in the presence of the reaction gas originating from the propylene to acrolein oxidation step. The inventive method enables the use, in part, of renewable raw material, while increasing acrylic acid production. | 01-15-2009 |
20090306425 | Production of Carboxylic Acids - A process for the production of carboxylic acids by oxidation of a hydrocarbon by oxygen or a gas containing oxygen and notably to the oxidation of cyclohexane to give adipic acid; the subject process entails a stage of oxidation of the hydrocarbon and at least one stage for extracting the dicarboxylic acids formed from the reaction medium and optionally recycling the unconverted hydrocarbon with oxidation by-products, such as alcohols and ketones, and which also includes a stage of conversion, removal or extraction of the α,ω-hydroxycarboxylic compounds formed during the oxidation stage and converting these compounds into diacids. | 12-10-2009 |
20160145180 | Method For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid - Provided is a method of subjecting an alkene to partial oxidation by using a fixed bed multitubular reactor, thereby producing an unsaturated aldehyde and/or an unsaturated carboxylic acid each corresponding to the alkene, wherein a plurality of catalyst layers formed by N division (N is N≧2) with respect to a gas flow direction of a reaction tube are provided, and when a change (° C.) of hot spot temperature per 1° C. change of reaction bath temperature in the catalyst layer is designated as Sn, at least one of the plurality of catalyst layers is regulated to Sn≦6. | 05-26-2016 |
562543000 | Alicyclic | 2 |
20130296604 | METHOD OF MAKING AND USING NANO-BIMETALLIC CATALYST TO PRODUCE ADIPIC ACID - A bimetallic catalyst supported on a transition metal oxide is described. A method to make and use the bimetallic catalyst is also described. A method for preparing supported bimetallic catalysts of coinage group metal and a combination of a coinage group metal and a platinum metal group is described. A method for direct synthesis of adipic acid (AA) adopting green catalytic oxidation route of cyclohexane (CH) using the bimetallic catalysts is described. The reaction to convert CH into AA in the presence of bimetallic catalyst is carried in an autoclave in the temperature range of 25 to 300° C. The CH conversion was over 21% with AA selectivity of 34% and ca. 63% selectivity of cyclohexanone and cyclohexanol together over Au—Pd/TiO | 11-07-2013 |
20140179950 | METHOD OF MAKING ADIPIC ACID USING NANO CATALYST - A method for direct synthesis of adipic acid (AA) adopting green catalytic oxidation route of cyclohexane (CH) using the bimetallic catalysts is described. The reaction to convert CH into AA in the presence of bimetallic catalyst is carried in an autoclave in the temperature range of 25 to 300° C. The CH conversion was over 21% with AA selectivity of 34% and ca. 63% selectivity of cyclohexanone and cyclohexanol together over Au—Pd/TiO | 06-26-2014 |
562544000 | Olefin | 24 |
562545000 | Producing unsaturated acid | 22 |
20080228002 | Metal Surfaces to Inhibit Ethylenically Unsaturated Monomer Polymerization - Materials for making apparatus and a method of inhibiting polymerization during manufacture, purification, handling and storage of subject ethylenically unsaturated monomers are disclosed. In particular, copper or metals containing copper, in the presence of oxygen, have inhibit undesired polymerization resulting in polymer fouling in apparatus used during the manufacture, purification, handling and storage of the monomers, such as acrylic acid, methacrylic acid, acrylic acid esters and methacrylic acid esters. The copper or copper alloys as described herein, in the presence of an oxygen-containing gas, exhibit self-inhibiting surface characteristics when used to make at least a portion of the apparatus to inhibit polymerization of the monomers in contact with the portion of the apparatus including such copper-containing metal. | 09-18-2008 |
20080269522 | PROCESS FOR OPERATING AN EXOTHERMIC HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF AN ORGANIC STARTING COMPOUND TO AN ORGANIC TARGET COMPOUND - A process for operating an exothermic heterogeneously catalyzed partial gas phase oxidation of an organic starting compound in a tube bundle reactor cooled with a fluid heat carrier, in which an increase in the loading of the fixed catalyst bed disposed in the reaction tubes with the organic starting compound is preceded by an increase in the inlet temperature of the fluid heat carrier into the space surrounding the reaction tubes. | 10-30-2008 |
20090171118 | PREPARING A COMPOUND COMPRISING A COMBINATION OF TWO CRYSTAL PHASES - The invention concerns a compound comprising a combination of two crystal phases. The first crystal phase corresponds to the formula: A | 07-02-2009 |
20100130777 | PROCESS FOR PRODUCING ACRYLIC ACID BY TWO-STAGE CATALYTIC VAPOR-PHASE OXIDATION - As an improvement in the production method of acrylic acid by two-stage catalytic vapor-phase oxidation of propylene comprising catalytic vapor-phase oxidation of a propylene-containing gas at a first reactor to produce an acrolein-containing gas, and successive catalytic vapor-phase oxidation of the obtained product gas to produce acrylic acid, a process which enables acrylic acid production on an industrial scale for a long period, with stability at high yield is offered. This process is characterized in that a filler formed of a solid inert material is disposed at a cooling part which is provided on the downstream side to the direction of gas flow through the catalyst layer in the first reactor and/or on the gas outlet side of the first reactor, in such a way that the voidage in the filler becomes 45-99%. | 05-27-2010 |
20100174112 | PROCESS FOR PRODUCING ACRYLIC ACID - A process which enables production of acrylic acid on an industrial scale at high productivity with stability, comprising production of acrylic acid by oxidation of propane with molecular oxygen, is provided. The process is characterized in characterized by re-use of the gas containing unreacted propane, as obtained after recovering acrylic acid from the gas produced of the reaction, as a recycling gas after removing at least a part of carbon dioxide from the same gas. | 07-08-2010 |
20100249455 | Process for producing acrolein and acrylic acid - The invention offers an improvement in a process for start-up in the occasion of producing acrolein and acrylic acid by catalytically oxidizing propylene at vapor phase under high load conditions, the start-up meaning the step of increasing the propylene supply rate (loading) from the non-reacting condition to the prescribed reaction conditions. This process is characterized in that the propylene supply rate is increased in the start-up stage of the reaction until the prescribed composition of starting reactant gas and the flow rate of the starting reactant gas are obtained, while adjusting at least one of the reaction temperature, the composition of the starting reactant gas and flow rate of the starting reactant gas, so as to maintain the propylene conversion at not lower than 90 mol %, the maximum peak temperature of the catalyst layer in each reaction zone at no higher than 450° C., and the sum of each ΔT (maximum peak temperature of a catalyst layer—reaction temperature) at the catalyst layer in each of the reaction zones to be no more than 180° C., respectively. According to this process, the reaction speedily reaches the steady state (standard operating conditions) and a high acrolein and acrylic acid yield is stably achieved from the start of the reaction. | 09-30-2010 |
20130131380 | PROCESS FOR THE SELECTIVE OXIDATION OF CARBON MONOXIDE - The invention relates to a process of the selective oxidation of carbon monoxide to carbon dioxide present in a gas mixture comprising at least one hydrocarbon or a hydrocarbon derivative, and to its integration into a process for producing hydrocarbon derivatives. The process according to the invention comprises a step that consists in bringing said gas mixture into contact with a solid catalyst capable of oxidizing carbon monoxide to carbon dioxide at a chosen temperature, characterized on that said step is carried out in a fluidized bed. | 05-23-2013 |
20150126774 | Process For Producing Shaped Catalyst And Process For Producing Diene Or Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid Using The Shaped Catalyst - There is provided a process for producing a shaped catalyst for a fixed bed oxidation reaction or a fixed bed oxidative dehydrogenation reaction, the catalyst having both of sufficient mechanical strength and catalyst performance, and the catalyst is produced by supporting a catalyst powder containing a complex metal oxide having molybdenum as an essential ingredient on an inert support by a tumbling granulation method at a relative centrifugal force of 1 to 35G. | 05-07-2015 |
20160145181 | Method For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid - Provided is a method capable of producing acrolein and/or acrylic acid, or methacrolein and/or methacrylic acid, stably in a high yield over a long period of time advantageously even in a high-load reaction, and the method is a method in which when preparing two or more kinds of catalysts having different formulations and stacking two or more layers in the axial direction of the tube, the catalysts are filled in such a manner that not only the component amount of bismuth relative to molybdenum decreases from the gas inlet side toward the gas outlet side, but also the component amount of iron relative to molybdenum increases from the gas inlet side toward the gas outlet side. | 05-26-2016 |
562546000 | Group VIII metal containing catalyst utilized | 12 |
20090156860 | CATALYST FOR PRODUCING ALPHA, BETA-UNSATURATED CARBOXYLIC ACID AND METHOD FOR PREPARATION THEREOF, AND METHOD FOR PRODUCING ALPHA, BETA-UNSATURATED CARBOXYLIC ACID - The object of the present invention is to provide a catalyst which can produce an α,β-unsaturated carboxylic acid through liquid-phase oxidation of an olefin or an α,β-unsaturated aldehyde in good reaction performance, a method for producing the catalyst, and a method for producing an α,β-unsaturated carboxylic acid by using the catalyst. The present invention resides in a catalyst for producing an α,β-unsaturated carboxylic acid, wherein a metal is supported on a carrier with a total pore volume of 0.40 to 1.50 cc/g as measured by nitrogen gas adsorption method, or wherein palladium with an average particle diameter in the range of 1 to 8 nm is supported on the carrier. | 06-18-2009 |
20110112325 | CATALYST FOR PRODUCING ACROLEIN AND/OR ACRYLIC ACID AND PROCESS FOR PRODUCING ACROLEIN AND/OR ACRYLIC ACID USING THE CATALYST - A catalyst for producing acrolein and/or acrylic acid from propylene by gas-phase catalytic oxidation with molecular oxygen-containing gas, comprising a catalytic active component containing molybdenum, bismuth and cobalt as essential elements, and having a crystallinity T of 4% or more and 18% or less in the 2θ range of 5° to 90°, measured by an X-ray diffraction analysis with Cu—Kα radiation; and a process for producing acrolein and/or acrylic acid by gas-phase catalytic oxidation of propylene with molecular oxygen, comprising the step of conducting the gas-phase catalytic oxidation in the presence of the catalyst. According to the catalyst and the process for producing acrolein and/or acrylic acid of the present invention, it is possible to stably produce acrolein and/or acrylic acid at a high yield for a long period. | 05-12-2011 |
20120184771 | METHOD FOR PRODUCING UNSATURATED ALDEHYDE AND UNSATURATED CARBOXYLIC ACID - A method for producing an unsaturated aldehyde and an unsaturated carboxylic acid through gas-phase catalytic oxidation of propylene, isobutylene or tertiary butanol, which is a raw material, with molecular oxygen in the presence of a catalyst comprising a complex oxide including molybdenum, bismuth and iron as essential components, by controlling the molar ratio of oxygen to the raw material such that a rate of reaction of the raw material is kept constant in the temperature range of from (TA—15)° C. to TA° C., where TA° C. is the boundary temperature of the activation energy of the catalyst. | 07-19-2012 |
20120289741 | METHOD FOR PRODUCING CATALYST FOR USE IN PRODUCTION OF UNSATURATED ALDEHYDE AND/OR UNSATURATED CARBOXYLIC ACID, AND METHOD FOR PRODUCING UNSATURATED ALDEHYDE AND/OR UNSATURATED CARBOXYLIC ACID - A catalyst for use in the production of an unsaturated aldehyde and/or an unsaturated carboxylic acid, the catalyst comparing (or, preferably, being composed of) a mixed oxide containing molybdenum, bismuth and iron, which has improved methanical strength, is produced by a method including the steps of (1) drying an aqueous solution or an aqueous slurry containing raw materials of the catalyst and then firstly calcining a dried product in a molecular oxygen-containing gas atmosphere to obtain a calcined product; (2) heating the calcined product obtained in Step (1) in the presence of a reducing material to obtain a reduced product having a mass loss of 0.05 to 6%; and (3) secondly calcining the reduced product obtained in Step (2) in a molecular oxygen-containing gas atmosphere. | 11-15-2012 |
20130172615 | CATALYST FOR PRODUCING UNSATURATED ALDEHYDE AND/OR UNSATURATED CARBOXYLIC ACID, AND PROCESS FOR PRODUCING UNSATURATED ALDEHYDE AND/OR UNSATURATED CARBOXYLIC ACID USING THE CATALYST - Provided is a catalyst for production of unsaturated aldehyde and/or unsaturated carboxylic acid, which shows excellent mechanical strength and low attrition loss and is capable of producing the object product(s) at a high yield. The catalyst comprises a catalytically active component containing molybdenum, bismuth and iron as the essential ingredients, and inorganic fibers, and is characterized in that the inorganic fibers contain at least an inorganic fiber having an average diameter of at least 8 μm and another inorganic fiber having an average diameter not more than 6 μm. | 07-04-2013 |
20140046093 | PROCESS FOR CHARGING A LONGITUDINAL SECTION OF A CATALYST TUBE - A process for charging a longitudinal section of a catalyst tube with a homogeneous fixed catalyst bed section whose active composition is at least one multielement oxide or comprises elemental silver on an oxidic support body and whose geometric shaped catalyst bodies and shaped inert bodies have a specific inhomogeneity of their longest dimensions. | 02-13-2014 |
20140350298 | PROCESS FOR THE (AMM)OXIDATION OF LOWER MOLECULAR WEIGHT ALKANES AND ALKENES - A process for producing unsaturated carboxylic acids or unsaturated nitriles by vapor phase oxidation reaction of their corresponding C | 11-27-2014 |
20150045581 | METHOD FOR PRODUCING ACROLEIN AND ACRYLIC ACID WITH A FIXED-BED MULTITUBULAR REACTOR - This invention provides a method for producing acrolein and/or acrylic acid by catalytic gas-phase oxidation, which method makes it possible to carry out a continuous operation steadily for a long period of time while a high yield is maintained. | 02-12-2015 |
20150133686 | MECHANICALLY STABLE HOLLOW CYLINDRICAL SHAPED CATALYST BODIES FOR GAS PHASE OXIDATION OF AN ALKENE TO AN UNSATURATED ALDEHYDE AND/OR AN UNSATURATED CARBOXYLIC ACID - A hollow cylindrical shaped catalyst body for gas phase oxidation of an alkene to an α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid comprises a compacted multimetal oxide having an external diameter ED, an internal diameter ID and a height H, wherein ED is in the range from 3.5 to 4.5 mm; the ratio q=ID/ED is in the range from 0.4 to 0.55; and the ratio p=H/ED is in the range from 0.5 to 1. The shaped catalyst body is mechanically stable and catalyzes the partial oxidation of an alkene to the products of value with high selectivity. It provides a sufficiently high catalyst mass density of the catalyst bed and good long-term stability with acceptable pressure drop. | 05-14-2015 |
20150367329 | RING-SHAPED CATALYST FOR PREPARING ACROLEIN AND ACRYLIC ACID, AND USE THEREOF (As Amended) - The present invention relates to a catalyst for preparing acrolein and acrylic acid, and use of the same. The catalyst according to the present invention can be uniformly packed in the reactor and collapse of the catalyst can be minimized because it has excellent mechanical properties, and it can lower initial pressure of the reaction by securing stable pore spaces and can be stably used for a long period of time. In addition, the preparation method of acrolein and acrylic acid according to the present invention can provide more improved production efficiency by using the catalyst. | 12-24-2015 |
20160051968 | CATALYST FOR CONVERSION OF PROPYLENE TO PRODUCT COMPRISING A CARBOXYLIC ACID MOIETY - In accordance with the invention, there is provided a novel catalyst composition comprising MoVGaPdNbXY, wherein X comprises La, Te, Ge, Zn, In, or W; and Y comprises Al or Si; wherein Mo, V, Ga, Pd, Nb, La, Te, Ge, Zn, In, W, Al, or Si are optionally present in combination with oxygen; wherein the catalyst does not comprise an additional element that acts as a catalyst in the conversion of a propylene to the product. Also, disclosed is a method for the conversion of a propylene to a carboxylic acid moiety by contacting the propylene with the disclosed catalyst. | 02-25-2016 |
20160059220 | Catalyst For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid, Method For Producing The Catalyst, And Method For Producing Unsaturated Aldehyde and/or Unsaturated Carboxylic Acid Using The Catalyst - An object of the invention is to provide a novel catalyst having high mechanical strength and capable of obtaining an unsaturated aldehyde or an unsaturated carboxylic acid in a high yield and a method for producing the same, and a method for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid using the catalyst. | 03-03-2016 |
562547000 | Group V metal containing catalyst utilized | 1 |
20160059218 | Catalyst For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid, Method For Producing Same, And Method For Producing Unsaturated Aldehyde and/or Unsaturated Carboxylic Acid - Provided is a catalyst having high activity and yield of a target product for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid and further having high mechanical strength. The catalyst is a catalyst prepared by a method in which a catalyst formulation satisfies specified atomic ratios; and in the preparation thereof, a molybdenum component raw material is an ammonium molybdate, a solvent for dissolving the ammonium molybdate is water, a bismuth component raw material is bismuth nitrate, and a solvent for dissolving bismuth nitrate is a nitric acid aqueous solution, and the weight of water for dissolving the ammonium molybdate, the weight of the nitric acid aqueous solution for dissolving the bismuth nitrate, and the acid concentration of the nitric acid aqueous solution are satisfied with specified ranges, respectively. | 03-03-2016 |
562548000 | Producing acetic acid | 2 |
20110009666 | Oxidation catalyst and its preparation - Process for the selective oxidation of ethane to ethylene and/or acetic acid, and/or the selective oxidation of ethylene to acetic acid, by contacting ethane and/or ethylene with a molecular oxygen-containing gas at elevated temperature in the presence of a spray-dried supported catalyst composition. The supported catalyst composition includes molybdenum, vanadium and niobium metal components, supported on a support comprising alpha-alumina. The supported catalyst is prepared by forming a slurry of the metal components and alpha-alumina support particles or an alpha-alumina support precursor, and spray-drying the slurry. | 01-13-2011 |
20110054214 | PROCESS FOR PRODUCTION OF SUPPORTED CATALYST FOR ACETIC ACID PRODUCTION - A process for production of a supported catalyst that, when used for production of lower aliphatic carboxylic acids from oxygen and lower olefins, improves yields of the lower aliphatic carboxylic acids and minimizes production of carbon dioxide gas (CO | 03-03-2011 |
562549000 | Alkane | 21 |
20080234513 | Oxide Catalyst for Oxidation or Ammoxidation - Disclosed is an oxide catalyst for use in catalytic oxidation or ammoxidation of propane or isobutane in the gaseous phase, which comprises a composition represented by the Mo | 09-25-2008 |
20080319224 | METHOD FOR THE HETEROGENEOUSLY CATALYZED PARTIAL DIRECT OXIDATION OF N-PROPANE TO ACRYLIC ACID - A method for the heterogeneously catalyzed partial direct oxidation of propane to acrylic acid in the gas phase, in which the reaction gas inlet mixture comprises cyclopropane as an impurity and the acrylic acid, after it has been converted from the product gas mixture into the liquid phase, is operated from the other constituents of the liquid phase with the aid of a separation by crystallization. | 12-25-2008 |
20100249456 | Use of Predehydration Towers In an Ethane Oxidation To Acetic Acid/Ethylene Process - Described herein is a process in which acetic acid is produced by ethane oxidation. One byproduct of the ethane oxidation is water, which is commonly removed from the process in the same stream as the acetic acid process. As described herein, the ethane oxidation reactor effluent is processed in a predehydration tower so as to separately recover water, acetic acid, and a gas stream for recycle back to the ethane oxidation reactor. | 09-30-2010 |
20110009667 | Use of Chemical Reaction to Separate Ethylene FromEthane in Ethane-Base Processes to Produce Acetic Acid - Described herein is a process in which acetic acid is produced by ethane oxidation. One byproduct of the ethane oxidation is ethylene. High ethylene content in the recycle gas stream will lead to poor efficiencies and higher losses to the COx byproduct in the acetic acid reactor. In fact, ethylene in the recycle feed competes with the ethane for the limited amount of oxygen feed, resulting in higher inefficiencies to carbon oxides than straight ethane oxidation. Ethylene is removed in this process by a further oxidation reaction at a temperature low enough such that ethane is not reactive, but the ethylene is converted to acetic acid. Either the ethane oxidation reactor effluent or a portion or all of the recycle stream to the ethane oxidation reactor, or any combination of the same, can be processed in this manner to reduce the ethylene content of those streams. | 01-13-2011 |
20110178332 | CATALYST FOR GAS-PHASE CONTACT OXIDATION OF HYDROCARBON, PREPARATION METHOD THEREOF AND GAS-PHASE OXIDATION METHOD OF HYDROCARBON USING THE SAME - The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a tungsten or tungsten oxide attached to the composite metal oxide, wherein an atomic molar ratio of the tungsten attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1. | 07-21-2011 |
20110178333 | CATALYST FOR GAS-PHASE CONTACT OXIDATION OF HYDROCARBON, PREPARATION METHOD THEREOF AND GAS-PHASE OXIDATION METHOD OF HYDROCARBON USING THE SAME - The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a palladium or palladium oxide attached to the composite metal oxide, wherein an atomic molar ratio of the palladium attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1. | 07-21-2011 |
20130090495 | SELECTIVE HYDROCARBON OXIDATION USING HETEROGENOUS CATALYSTS - A process for the complete or partial oxidation of hydrocarbons comprises contacting a C | 04-11-2013 |
20130144085 | DUAL FUNCTION PARTIAL OXIDATION CATALYST FOR PROPANE TO ACRYLIC ACID CONVERSION - Catalyst compositions including a compound of the following general formula (I): | 06-06-2013 |
20130225862 | OXIDE CATALYST, PROCESS FOR PRODUCING OXIDE CATALYST, PROCESS FOR PRODUCING UNSATURATED ACID, AND PROCESS FOR PRODUCING UNSATURATED NITRILE - Disclosed is a process for producing an oxide catalyst for use in the gas-phase catalytic oxidation reaction or the like of propane or the like, the process comprising the steps of: (I) obtaining a preparation containing compounds of Mo, V, Nb, and Sb or Te at the predetermined atomic ratios; (II) drying the preparation to obtain a dry powder; and (III) calcining the dry powder, wherein the step (III) comprises the step of calcining the dry powder in the presence of a compound containing W in the form of a solid to obtain a pre-stage calcined powder or a mainly calcined powder, or the step of calcining the dry powder and calcining the obtained pre-stage calcined powder in the presence of the solid to obtain a mainly calcined powder, the solid satisfies the predetermined conditions, and the oxide catalyst comprises a catalytic component having the predetermined composition. | 08-29-2013 |
20130267735 | Propane Oxidation Process Using Reduced Amounts of Steam - Less propionic acid is produced as a by-product in a process for the direct oxidation of propane to acrylic acid, the process comprising the step of contacting under oxidation conditions a gaseous mixture comprising (i) propane, (ii) oxygen, (iii) steam and (iv) a diluent gas, with a propane oxidation catalyst by reducing the steam content of the gaseous mixture. | 10-10-2013 |
20130274509 | Reactor and Process for Propane Oxidation - The amount of propionic acid produced in the process of oxidizing propane to acrylic acid is reduced by using a reactor with a length/diameter ratio >10 and/or maintaining the difference between the target reaction temperature and the peak temperature within the reactor to less than 20° C. | 10-17-2013 |
20130324761 | HYDROCARBONS SELECTIVE OXIDATION WITH HETEROGENEOUS CATALYSTS - A process for the complete or partial oxidation of hydrocarbons comprises contacting a C | 12-05-2013 |
20140031585 | STEAM RE-CALCINATION OF MIXED METAL OXIDE CATALYSTS - A process for producing a catalyst for the (amm)oxidation of alkanes comprises calcination of a crystalline mixed metal oxide catalyst partially or wholly in the presence of steam. | 01-30-2014 |
20140235893 | Catalyst for Selectively Producing Acetic Acid Through the Partial Oxidation of Ethane - The invention relates to the development of a catalyst for selectively producing acetic acid from a gaseous feedstock of ethane, ethylene or mixtures thereof and oxygen at a low temperature. Said gaseous feedstock is brought together with a catalyst containing the oxides of Mo, V and Nb and nano metallic Pd optionally together with a hetero-poly acid and/or Sb and Ca. The present catalytic system provides both higher selectivity and yield of acetic with minimal production of side products of ethylene and CO. | 08-21-2014 |
20140303400 | SELECTIVE OXYGENATION OF ALKANES USING OXYGEN - A process for the complete or partial oxygenation of hydrocarbons comprises contacting a C | 10-09-2014 |
20140336411 | CATALYST FOR THE OXIDATION OF HYDROCARBONS CONSISTING OF MOLYBDENUM, VANADIUM, NIOBIUM, TELLURIUM, MANGANESE AND COBALT - A catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons, in particular for the selective oxidation of propane to acrylic acid, comprising a) molybdenum (Mo), b) vanadium (V), c) niobium (Nb), d) tellurium (Te), e) manganese (Mn) and cobalt, in which the molar ratio of at least one element, which is selected from manganese and cobalt, to molybdenum lies in the range 0.01 to 0.2. Furthermore, a catalyst for the oxidation and/or oxidative dehydrogenation of hydrocarbons, a use of the catalyst material or of the catalyst, a method for producing a catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons, and a method for the selective oxidation of propane to acrylic acid. | 11-13-2014 |
20150045582 | PROCESS FOR MAKING ETHYLENE AND ACETIC ACID - A process comprising catalytically converting ethane to ethylene and acetic acid in the presence of oxygen at a temperature of 450° C. or less in the gas phase wherein the catalyst has the empirical formula MoV | 02-12-2015 |
20150148563 | Catalyst Material for the Oxidation of Hydrocarbons - A catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons, in particular for the selective oxidation of propane to acrylic acid, is specified, comprising a) molybdenum (Mo), b) vanadium (V), c) niobium (Nb), d) tellurium (Te), e) nickel (Ni), f) tungsten (W) and g) manganese (Mn), in which the molar ratio of at least one element, which is selected from nickel, tungsten and manganese, to molybdenum lies in the range 0.01 to 0.2, more preferably 0.05 to 0.15 and particularly preferably from 0.0025:1 to 0.3:1. Furthermore, a catalyst for the oxidation and/or oxidative dehydrogenation of hydrocarbons, a use of the catalyst material or of the catalyst, a method for producing a catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons and a method for the selective oxidation of propane to acrylic acid is specified. | 05-28-2015 |
20160068462 | SUPPORTED CATALYST FOR PRODUCTION OF UNSATURATED CARBOXYLIC ACIDS FROM ALKANES - The present disclosures and inventions relate to a supported catalyst composition for the catalytic oxidation of a hydrocarbon such as propane with oxygen or air, in the presence of a catalyst composition comprising a support material and a mixed metal composition comprising metals in the molar ratios described by the formula Mo | 03-10-2016 |
20160074841 | High Productivity Catalyst for Alkane Oxidation to Unsaturated Carboxylic Acids and Alkenes - The present disclosures and inventions relate to composite catalyst compositions for the catalytic oxidation of hydrocarbons such as propane with an oxygen containing stream, in the presence of a composite catalyst comprising CA that comprises at least components a metal M, a support S, and an optional alkali metal A, and also CB that comprises one or more mixed metal oxide phases comprising metals in the relative molar ratios indicated by the formula Mo | 03-17-2016 |
20160075629 | METHODS FOR PREPARING ACETIC ACID VIA ETHANE OXIDATION - The present disclosures and inventions relate to methods for the preparation of acetic acid via the oxidation of ethane, including the preparation of high purity acetic acid that comprises very low concentrations of formic acid impurity. More specifically, described herein are methods for producing acetic acid comprising: a. producing a crude acetic acid composition comprising formic acid from ethane via ethane oxidation; and then b. purifying the crude acetic acid composition by crystallization to remove formic acid to achieve a purified acetic acid composition; wherein the formic acid is present in the purified acetic acid composition in an amount less than 0.2% by weight, based on the total weight of the purified acetic acid composition. | 03-17-2016 |