Class / Patent application number | Description | Number of patent applications / Date published |
585418000 | Using transition metal-containing catalyst | 28 |
20080287719 | Process for para-xylene production from light aliphatics - The subject process obtains a high yield of high-purity para-xylene from a butene dimer feed. The process may include dimerization of isobutene to obtain a butene dimer comprising C | 11-20-2008 |
20080312482 | Process for para-xylene production from 2,4,4-trimethylpentene - The subject process obtains a high yield of high-purity para-xylene from 2,4,4-trimethylpentene as contained in butene dimer. A process combination may include dimerization of the isobutene to obtain C | 12-18-2008 |
20110257452 | Regenerable Composite Catalysts for Hydrocarbon Aromatization - A composite catalyst for aromatization of hydrocarbons includes a molecular sieve catalyst and metal dehydrogenation catalyst present as discrete catalysts in a physical admixture. The molecular sieve catalyst can be a zeolite and the metal dehydrogenation catalyst can be in the form of a nanostructure, such as zinc oxide nanopowder. The catalyst can convert hydrocarbon feedstocks, such as alkanes and alkenes, to aromatics and can be regenerated in-situ. | 10-20-2011 |
20120142986 | PROCESS FOR PRODUCING AROMATIC HYDROCARBON AND TRANSITION-METAL-CONTAINING CRYSTALLINE METALLOSILICATE CATALYST FOR USE IN THE PRODUCTION PROCESS - Provided is a process for producing an aromatic hydrocarbon efficiently at high yield from a lower hydrocarbon containing methane as a major component, and such a process for producing an aromatic hydrocarbon includes the step of reacting a lower hydrocarbon containing methane as a major component in the presence of a transition-metal-containing crystalline metallosilicate catalyst which is obtainable by supporting 5 to 25 parts by weight of a transition metal (X) on 100 parts by weight of a modified crystalline metallosilicate obtainable by subjecting a crystalline metallosilicate to a series of treatment (A) including a step (i) of eliminating part of a metal from the crystalline metallosilicate and a silylation step (ii). | 06-07-2012 |
20130237734 | Aromatization Catalyst and Methods of Preparing Same - A method comprising contacting a crystalline aluminosilicate with an organic acid to form an acid-treated support; contacting the acid-treated support with a Group IB metal compound and a Group IIIA element compound to form a catalyst precursor; and contacting the catalyst precursor with a silylating agent to form a silylated catalyst. | 09-12-2013 |
20130245349 | HYDROTHERMAL SYNTHESIS OF ZEOLITES OR ZEOLITE-LIKE MATERIALS USING MODIFIED MIXED HYDROXIDES - This invention relates to a process for producing aluminium silicates in the form of zeolite L, as well as the intermediate and end products of this process. The invention further relates to the use of these aluminium silicates for the conversion or adsorption of hydrocarbons. | 09-19-2013 |
585419000 | Group VIII noble metal | 17 |
20090076316 | PROCESS FOR PRODUCTION OF AROMATIC HYDROCARBON - A process for producing an aromatic hydrocarbon, comprises heating the hydrocarbon in the presence of a catalyst carrying a molybdenum compound or a rhenium compound on a metallosilicate carrier modified with a silicon compound, a sodium compound or a calcium compound. The silicon compound is a silane compound having a basic group selected from amino, alkylamino and pyridyl groups and an organic group of a size equal to or greater than the pore size of the metallosilicate and selected from trialkoxy and triphenyl groups and the sodium compound or the calcium compound is a compound having an organic group of a size equal to or greater than the pore size of the metallosilicate and selected from crown ether, hexafluoropentanedione and acetylacetonate. The silane compound, the sodium compound or the calcium compound is modified so as to make an oxide thereof by impregnating the metallosilicate carrier with it and subsequently heat-treating it in an oxygen-containing atmosphere. | 03-19-2009 |
20100160702 | Methods of Preparing an Aromatization Catalyst - A method of preparing a fresh catalyst comprises impregnating a metal to a catalyst support to produce an impregnated catalyst, dispersing the metal in the impregnated catalyst to produce an impregnated, dispersed catalyst, contacting the impregnated, dispersed catalyst with an activating composition to produce an impregnated, dispersed, activated catalyst, and thermally treating the impregnated, dispersed, activated catalyst to produce the fresh catalyst wherein the activating composition is in the gas phase. | 06-24-2010 |
20100234657 | CATALYST FOR PRODUCTION OF AROMATIC HYDROCARBON COMPOUNDS (AS AMENDED) - There is provided a zeolite-containing molded catalyst for use in production of aromatic hydrocarbon compounds by catalytic cyclization from light hydrocarbon feedstock, whereby deterioration due to precipitation of carbonaceous material during the reaction and permanent degradation due to contact with high-temperature steam during the catalyst regeneration process are suppressed to thereby allow stable production with high yield over a long period of time. In this catalyst, the zeolite contained in the zeolite-containing molded catalyst fulfills the following conditions (1), (2) and (3):
| 09-16-2010 |
20100280297 | Process of using germanium zeolite catalyst for alkane aromatization - This invention is for a catalyst for conversion of alkanes having two to six carbon atoms per molecule to aromatics. The catalyst is a MFI zeolite with a crystallite size of less than 15 microns with, in addition to silicon and aluminum, germanium as a framework element. Platinum is deposited on the zeolite. The zeolite may contain other optional tetravalent and trivalent elements in the zeolite framework. The catalyst is synthesized by preparing a zeolite containing aluminum, silicon, germanium and, optionally, other elements in the framework, calcining the zeolite and depositing platinum on the zeolite. The catalyst may be used for aromatization of alkanes, such as propane, to aromatics, such as benzene, toluene and xylenes. | 11-04-2010 |
20110172479 | Zeolite catalyst with deposited germanium, aluminum and platinum for aromatization of alkanes, process of making and process of using thereof - The present invention is for a catalyst, a process for making the catalyst and a process for using the catalyst in aromatization of alkanes having three to five carbon atoms per molecule, such as propane, to aromatics, such as benzene, toluene and xylene. The catalyst is an aluminum-silicon zeolite having a silicon to aluminum atomic ratio (Si:Al) greater than 15:1, such as MFI or ZSM-5, on which germanium, aluminum and a noble metal, such as platinum, have been deposited. The catalyst may be bound with magnesia, alumina, titania, zirconia, thoria, silica, boria or mixtures thereof. The aluminum and germanium may be deposited simultaneously on the zeolite. | 07-14-2011 |
20110190559 | Method of Enhancing an Aromatization Catalyst - A hydrocarbon aromatization process comprising adding a nitrogenate, an oxygenate, or both to a hydrocarbon stream to produce an enhanced hydrocarbon stream, and contacting the enhanced hydrocarbon stream with an aromatization catalyst, thereby producing an aromatization reactor effluent comprising aromatic hydrocarbons, wherein the catalyst comprises a non-acidic zeolite support, a group VIII metal, and one or more halides. Also disclosed is a hydrocarbon aromatization process comprising monitoring the presence of an oxygenate, a nitrogenate, or both in an aromatization reactor, monitoring at least one process parameter that indicates the activity of the aromatization catalyst, modifying the amount of the oxygenate, the nitrogenate, or both in the aromatization reactor, thereby affecting the parameter. | 08-04-2011 |
20110201860 | Process for conversion of alkanes to aromatics - The process for conversion of alkanes to aromatics includes the steps of contacting a feedstock containing alkanes having between two and six carbon atoms per molecule with a composite catalyst to produce an aromatization reaction, and collecting aromatics produced by the reaction. The composite catalyst is a zeolite having a matrix impregnated with a noble metal and an oxide of a transition metal. The noble metal may be Pt, Pd, Rh, Ru, or Ir. The transition metal may be Fe, Co, Ni, Cu, or Zn. The zeolite may be a medium or large pore zeolite, and may have an MFI, MEL, FAU, TON, VPI, MFL, AEI, AFI, MWW, BEA, MOR, LTL, or MTT structure, preferably MFI. The zeolite framework may include silicon, aluminum, and/or gallium. The matrix may be an oxide of magnesium, aluminum, titanium, zirconium, thorium, silicon or boron, and is preferably alumina. | 08-18-2011 |
20120029257 | PROCESS FOR THE PRODUCTION OF PARA-XYLENE - A reforming process using a medium pore zeolite under conditions to facilitate the conversion of C | 02-02-2012 |
20130035530 | Catalysts Having an Improved Crush Strength and Methods of Making and Using Same - A method of preparing a catalyst comprising selecting a zeolite having a mean particle size of equal to or less than about 6 microns, blending the zeolite with a binder and water to form a paste, shaping the paste into a bound zeolite support, adding a metal to the bound zeolite support to form a metalized catalyst support, and adding at least one halide to the metalized catalyst support to form the catalyst. A catalytic reforming process for converting hydrocarbons to aromatics comprising: contacting a catalyst comprising a silica bound zeolite, a Group VIII metal supported thereby, and at least one halide with a hydrocarbon feed in a reaction zone, wherein the silica bound zeolite comprises a zeolite having a mean particle size of equal to or less than about 6 microns and a median particle size of equal to or less than about 5 microns. | 02-07-2013 |
20130066125 | Extending the Life of an Aromatization Catalyst - A method of extending the life of an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst, and oxidizing the catalyst prior to reaching the RDT. A method of aromatizing a hydrocarbon comprising identifying a rapid deactivation threshold (RDT) for an aromatization catalyst, and operating an aromatization reactor comprising the catalyst to extend the Time on Stream of the reactor prior to reaching the RDT. A method of extending the life of an aromatization catalyst comprising predicting a rapid deactivation threshold (RDT) for an aromatization reactor by employing the catalyst in a reactor system under an accelerated fouling condition to identify a test rapid deactivation threshold (t-RDT), predicting the RDT for the aromatization reactor based upon the t-RDT, and oxidizing the catalyst prior to the predicted RDT to extend the Time on Stream of the aromatization catalyst. | 03-14-2013 |
20140066676 | Catalytic Reforming - Methods and systems for improved catalytic reforming are disclosed. A method of catalytic reforming includes feeding a feedstream comprising C | 03-06-2014 |
20140088333 | Aromatization Catalysts With High Surface Area and Pore Volume - Regenerable aromatization catalysts having high surface area and pore volume, as well as methods for producing these catalysts, are disclosed. | 03-27-2014 |
20140213839 | Methods of Regenerating Aromatization Catalysts - Methods for treating or rejuvenating a spent catalyst are disclosed. Such methods can employ a step of halogenating the spent catalyst, followed by decoking the halogenated spent catalyst. | 07-31-2014 |
20140235912 | METHOD FOR OBTAINING BRANCHED ALKANES AND AROMATIC HYDROCARBONS - A method for the recovery of energy from synthesis gas waste products obtained from wet crushed coal, according to a gasification-pyrolysis process, which comprises the submission of the waste products obtained during the production of the synthesis gas to a subsequent treatment, to transform such products into other products of the branched-chain alkane type and aromatic compounds, recovering the hydrogen obtained during these reactions, which will be available to be used at other chemical processing plants, as fuel or simply to be fed back to the gasification-pyrolysis process itself, to enrich the synthesis gas obtained. | 08-21-2014 |
20140316179 | METHOD OF PREPARING HYDROCARBON AROMATIZATION CATALYST, THE CATALYST, AND THE USE OF THE CATALYST - In one embodiment, a formed catalyst can comprise: a Ge-ZSM-5 zeolite; a binder comprising silica with 1 to less than 5 wt % non-silica oxides; less than or equal to 0.1 wt % residual carbon; 0.4 to 1.5 wt % platinum; and 4.0 to 4.8 wt % Cs; wherein the weight percentages are based upon a total weight of the catalyst. In one embodiment, a method of making a formed catalyst can comprise: mixing an uncalcined Ge-ZSM-5 zeolite and a binder to form a mixture; forming the mixture into a formed zeolite; calcining the formed zeolite to result in the formed zeolite having less than or equal to 0.1 wt % of residual carbon; ion-exchanging the formed zeolite with cesium; depositing platinum on the formed zeolite; and heating the formed zeolite to result in a final catalyst; wherein the final catalyst comprises 4.0 to 4.8 wt % cesium and 0.4 to 1.5 wt % platinum. | 10-23-2014 |
20150073190 | Methods of Regenerating Aromatization Catalysts - Methods for treating or rejuvenating a spent catalyst are disclosed. Such methods can employ a step of halogenating the spent catalyst, followed by decoking the halogenated spent catalyst. The halogenation step can utilize fluorine and chlorine together, or fluorine and chlorine can be applied sequentially. | 03-12-2015 |
20160045904 | Methods of Regenerating Aromatization Catalysts - Methods for treating or rejuvenating a spent catalyst are disclosed. Such methods can employ a step of halogenating the spent catalyst, followed by decoking the halogenated spent catalyst. The halogenation step can utilize fluorine and chlorine together, or fluorine and chlorine can be applied sequentially. | 02-18-2016 |
585420000 | Group VI metal | 5 |
20100016647 | CATALYST FOR AROMATIZATION OF LOWER HYDROCARBONS AND PROCESS FOR PRODUCTION OF AROMATIC COMPOUNDS - A catalyst for producing aromatic compounds from lower hydrocarbons while improving activity life stability of methane conversion rate; benzene formation rate; naphthalene formation rate; and total formation rate of benzene, toluene and xylene is formed by loading molybdenum and copper on metallo-silicate serving as a substrate and then calcining the metallo-silicate. When the catalyst is reacted with a reaction gas containing lower hydrocarbons and carbonic acid gas, aromatic compounds are produced. In order to obtain the catalyst, it is preferable that molybdenum and copper are loaded on zeolite formed of metallo-silicate after the zeolite is treated with a silane compound larger than a pore of the zeolite in diameter and having an amino group and a straight-chain hydrocarbon group, the amino group being able to selectively react with the zeolite at a Bronsted acid point of the zeolite. It is preferable that a loaded amount of molybdenum is within a range of from 2 to 12 wt. % based on total amount of the calcined catalyst while copper is loaded at a copper to molybdenum molar ratio of 0.01 to 0.8. | 01-21-2010 |
20100185034 | PROCESS FOR PRODUCING AROMATIC HYDROCARBON - Provided is a process for producing an aromatic hydrocarbon using a molybdenum-containing solid catalyst, more specifically a process for producing an aromatic hydrocarbon efficiently from a lower hydrocarbon gas essentially containing methane by activating the molybdenum-containing solid catalyst with maintaining a high yield for a long period of time. | 07-22-2010 |
20100331592 | Production of Aromatics from Methane - A catalyst for the conversion of methane to higher hydrocarbons including aromatic hydrocarbons comprises a support and molybdenum or a compound thereof dispersed on the support. The support comprises an aluminosilicate zeolite combined with a binder selected from silica, titania, zirconia and mixtures thereof. The catalyst is substantially free of aluminum external to the framework of the aluminosilicate zeolite. | 12-30-2010 |
20130066126 | PRE-CARBURIZED MOLYBDENUM-MODIFIED ZEOLITE CATALYST AND USE THEREOF FOR THE AROMATIZATION OF LOWER ALKANES - The present invention relates to a method for producing a zeolite catalyst useful for aromatization of a lower alkane, a zeolite catalyst useful for aromatization of a lower alkane obtainable by said method and a process for aromatization of a lower alkane using the zeolite catalyst of the present invention. | 03-14-2013 |
20140073828 | SINC-CONTAINING METHANE AROMATIZATION CATALYST, METHOD OF MAKING A METHOD OF USING THE CATALYST - A catalyst for converting methane to aromatic hydrocarbons is described herein. The catalyst comprises an active metal or a compound thereof, zinc or a compound thereof and an inorganic oxide support wherein the active metal is added to the support as a metal oxalate. A method of making the catalyst and a method of using the catalyst are also described. | 03-13-2014 |