| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 585477000 | By isomerization | 58 |
| 20080200742 | Para-Xylene Selective Adsorbent Compositions and Methods - Adsorbent compositions for vapor-phase adsorption processes, which are selective for para-xylene. Such compositions can be used in gas-phase adsorption processes for the separation of para-xylene or the separation of para-xylene and ethylbenzene from mixed xylenes or a C | 08-21-2008 |
| 20090062585 | PREPARATION OF A POROUS COMPOSITE MATERIAL BASED ON EU-1 ZEOLITE AND ITS IMPLEMENTATION IN THE ISOMERIZATION OF C8 AROMATICS - A preparation process is described for a porous composite material formed from an amorphous core based on at least one silicon oxide on which crystals of EU-1 zeolite are dispersed, said process comprising 1) the impregnation of a solid comprising a silicon oxide and an aluminium oxide with an aqueous solution comprising a hexamethonium cation, 2) the hydrothermal treatment, implemented in an autoclave of volume V (ml) under steam and at a temperature T comprised between 120 and 220° C., of said solid from stage 1), the quantity of water introduced beforehand into said autoclave being strictly greater than a volumetric quantity equal to V*[23.48*10 | 03-05-2009 |
| 20090093660 | AROMATIC ISOMERIZATION CATALYST AND ISOMERIZATION PROCESS - One exemplary embodiment can be an extruded C8 alkylaromatic isomerization catalyst. The extruded catalyst can include:
| 04-09-2009 |
| 20090093661 | CATALYST COMPRISING AN EUO ZEOLITE, A 10 MR ZEOLITE AND A 12 MR ZEOLITE, AND ITS USE IN ISOMERIZING AROMATIC C8 COMPOUNDS - A catalyst is described which comprises at least one zeolite with structure type EUO, at least one zeolite having channels the opening to which is defined by a ring of 10 oxygen atoms (10 MR), at least one zeolite having channels the opening to which is defined by a ring of 12 oxygen atoms (12 MR) and at least one porous mineral matrix. Said catalyst optionally also contains at least one group VIII metal. The catalyst of the invention is used in a process for isomerizing a feed comprising aromatic compounds containing 8 carbon atoms per molecule. | 04-09-2009 |
| 20100125160 | Selective Aromatics Isomerization Process - This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using a catalyst comprising a zeolite having specific particle-size characteristics, a platinum-group metal and a silica binder. A relatively minimal amount of hydrogen is supplied to the process on a once-through basis, resulting in low saturation of aromatics while achieving effective xylene isomerization with reduced processing costs. | 05-20-2010 |
| 20100152511 | Hydrocarbon Conversion Using an Improved Molecular Sieve - The present invention comprises a hydrocarbon-conversion process using an improved MgAPSO-31 molecular sieve which demonstrates a favorable combination of conversion and selectivity in aromatics conversion. The sieve has a specific combination of crystal configuration, being limited in diameter and length, specified crystallinity as measured by an X-Ray Diffraction Index (XRDI), and a narrow range of magnesium content. | 06-17-2010 |
| 20100152512 | Hydrocarbon Conversion Using An Improved Molecular Sieve - The present invention comprises a hydrocarbon-conversion process using an improved MgMxAPSO-31 molecular sieve which demonstrates a favorable combination of conversion and selectivity in aromatics conversion. The sieve comprises at least two divalent elements with narrow specific concentration limits in the framework structure having defined crystal characteristics. The element Mx may comprise one or more of manganese, cobalt, nickel, iron and zinc. | 06-17-2010 |
| 20110190562 | CATALYST COMPRISING AN IZM-2 ZEOLITE AND AT LEAST ONE METAL, AND ITS USE IN THE TRANSFORMATION OF HYDROCARBONS - A catalyst is described which comprises at least one IZM-2 zeolite, at least one matrix and at least one metal selected from metals from groups VIII, VIB and VIIB, said zeolite having a chemical composition expressed as the anhydrous base in terms of moles of oxides by the following general formula: XO | 08-04-2011 |
| 20110230695 | SELECTIVE AROMATICS ISOMERIZATION PROCESS - This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using a catalyst comprising a zeolite having specific particle-size characteristics, a platinum-group metal and a silica binder. A relatively minimal amount of hydrogen is supplied to the process on a once-through basis, resulting in low saturation of aromatics while achieving effective xylene isomerization with reduced processing costs. | 09-22-2011 |
| 20130041194 | CATALYST AND ISOMERISATION PROCESS - An alkylaromatics isomerisation catalyst, which catalyst comprises at least 50 wt % of an inorganic binder; at least 0.01 wt % of a Group VIII metal and 1-9 wt % ZSM-12 zeolite wherein the silica to alumina molar ratio (SAR) of the ZSM-12 zeolite is in the range of from 60 to 200, and a process for the isomerisation of alkylaromatics to provide a reaction mixture, said process comprising contacting a hydrocarbon stream comprising alkylaromatics with such catalyst. | 02-14-2013 |
| 585478000 | With plural separation steps | 12 |
| 20090069613 | Processes for the Isomerization of Paraffins of 5 and 6 Carbon Atoms with Methylcyclopentane Recovery - In an isomerization process where the isomerization effluent ( | 03-12-2009 |
| 20090149686 | PROCESS FOR SEPARATION OF C8 AROMATIC COMPOUNDS WITH LIMITED RECYCLING - Process for the production of paraxylene from a C8 aromatic feedstock that comprises the following stages:
| 06-11-2009 |
| 20100179360 | METHOD FOR CONVERSION OF ETHYLBENZENE AND PROCESS FOR PRODUCTION OF PARA-XYLENE - A process for converting ethylbenzene, by which ethylbenzene in a feedstock containing C8 aromatic hydrocarbon is converted to benzene at a high degree of conversion is disclosed. The process for converting ethylbenzene includes bringing a C8 aromatic hydrocarbon mixed feedstocks containing ethylbenzene into contact with an acid type catalyst containing at least one metal selected from the group consisting of the metals belonging to Group VII and Group VIII in the presence of H | 07-15-2010 |
| 20100305380 | Process for Improved Meta-Xylene Yield from C8 Aromatics - Meta-xylene is recovered from admixture with other C | 12-02-2010 |
| 20130144101 | Process for Producing Para-Xylene - A process for producing a PX-rich product, the process comprising: (a) providing a PX-depleted stream; (b) isomerizing at least a portion of the PX-depleted stream to produce an isomerized stream having a PX concentration greater than the PX-depleted stream and a benzene concentration of less than 1,000 ppm and a C | 06-06-2013 |
| 20130345481 | Process for Producing Para-Xylene - A process for producing a PX-rich product, the process comprising: (a) providing a PX-depleted stream; (b) isomerizing at least a portion of the PX-depleted stream to produce an isomerized stream having a PX concentration greater than the PX-depleted stream and a benzene concentration of less than 1,000 ppm and a C | 12-26-2013 |
| 20150094509 | SYSTEMS AND METHODS FOR PRODUCING DESIRED XYLENE ISOMERS - Methods and systems are provided for producing a desired xylene isomer. The method includes adsorbing the desired xylene isomer from a mixed xylene stream in an adsorbent chamber. The desired xylene isomer is desorbed with a desorbent to produce an extract stream with the desired xylene isomer and the desorbent, where the desorbent has a lower boiling point than the desired xylene isomer. The extract stream is fractionated in an extract fractionator to produce a low pressure extract overhead stream with gaseous desorbent. The low pressure extract overhead stream is pressurized to produce a high pressure extract overhead stream with a temperature greater than an extract reboiler temperature. The high pressure extract overhead stream is condensed in an extract process reboiler, and produces a liquid extract overhead stream | 04-02-2015 |
| 585479000 | Including a crystallization step | 5 |
| 20080269535 | PROCESS FOR PRODUCING HIGH PURITY META-XYLENE, COMPRISING SIMULATED MOVING BED ADSORPTION AND CRYSTALLIZATION - The invention concerns a process for producing high purity meta-xylene, comprising a step for separation by simulated moving bed adsorption starting from an aromatic C8 feed delivering a fraction which is rich in meta-xylene and a fraction which is depleted in meta-xylene, and a step for crystallization of the meta-xylene rich fraction. The purity of the meta-xylene produced is at least 99.5%. | 10-30-2008 |
| 20110319688 | Paraxylene Production Process and Apparatus - The invention concerns a process for the production of paraxylene and an apparatus suitable for said process. The process separates the overhead from a xylenes re-run into a xylene-rich stream and a xylene-lean stream. The xylene-lean stream is isomerized under conditions such that the xylenes are in the liquid phase. | 12-29-2011 |
| 20130274532 | Liquid Phase Isomerization Process - Liquid phase isomerization technology is employed in a manner to increase efficiency and reduce energy in paraxylene recovery. | 10-17-2013 |
| 20140031600 | Paraxylene Production Process And Apparatus - The invention concerns a process for the production of paraxylene and an apparatus suitable for said process. The process separates the overhead from a xylenes re-run into a xylene-rich stream and a xylene-lean stream. The xylene-lean stream is isomerized under conditions such that the xylenes are in the liquid phase. | 01-30-2014 |
| 20140155667 | Process for the Production of Purified Xylene Isomers - The invention is directed to a process to produce para-xylene and optionally, ortho-xylene, including coupling a C | 06-05-2014 |
| 585480000 | Using metal oxide- or sulfide-containing catalyst | 36 |
| 20160122262 | Xylene Isomerization Process with Sulfidation - A process is provided for the isomerization of aromatic hydrocarbons including contacting an aromatic hydrocarbon feedstream with a catalyst comprising a hydrogenation metal wherein sulfur is continuously introduced after catalyst start-up for an extended period of time at a concentration of no more than 56 ppm by weight of the aromatic hydrocarbon feedstream. | 05-05-2016 |
| 585481000 | Crystalline aluminosilicate | 35 |
| 20080221376 | PROCESS FOR ISOMERIZING AROMATIC C8 COMPOUNDS IN THE PRESENCE OF A CATALYST COMPRISING A MODIFIED EUO ZEOLITE - A process for isomerizing a feed comprising at least one aromatic compound containing eight carbon atoms per molecule is carried out in the presence of a catalyst comprising at least one modified zeolite with structure type EUO, at least one binder and at least one metal from group VIII of the periodic table, said catalyst having been prepared using a process which comprises the following in succession:
| 09-11-2008 |
| 20080275281 | Process for Isomerizing an Aromatic C8 cut in the presence of a catalyst based on a Dealuminated Euo Zeolite - A process is described for isomerising an aromatic cut containing at least one aromatic compound containing eight carbon atoms per molecule, comprising bringing said cut into contact with a catalyst containing a zeolite with structure type EUO, said catalyst having been prepared using a process comprising at least the following steps:
| 11-06-2008 |
| 20080281138 | MODIFIED EU-1 ZEOLITE AND ITS USE IN THE ISOMERIZATION OF AROMATIC C8 COMPOUNDS - A catalyst is described which comprises at least one modified EU-1 zeolite containing silicon atoms and aluminium atoms, at least one matrix and at least one metal from group VIII of the periodic table of the elements, the modified zeolite having a number of hexacoordinated aluminium atoms representing more than 20% by weight of the total number of aluminium atoms present in said modified EU-1 zeolite. Said catalyst is used in a process for the isomerization of an aromatic feed comprising at least one compound containing eight carbon atoms per molecule. | 11-13-2008 |
| 20090093662 | AROMATIC ISOMERIZATION CATALYST - One exemplary embodiment can be a catalyst for a C8 aromatic isomerization process. The catalyst can include:
| 04-09-2009 |
| 20090171135 | Process for C8 Alkylaromatic Isomerization - A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al | 07-02-2009 |
| 20090299115 | DUAL ZEOLITE CATALYST COMPRISING A GROUP VIII METAL AND A GROUP IIIA METAL, AND ITS USE IN ISOMERIZATION OF AROMATIC C8 COMPOUNDS - A catalyst is described which comprises at least one zeolite with structure type EUO, at least one zeolite selected from IM-5 zeolite and zeolites with structure type MFI, MOR, BEA and MTW, at least one group VIII metal, at least one group IIIA metal and at least one porous mineral matrix. The catalyst of the invention is used in a process for isomerizing a feed comprising aromatic compounds containing 8 carbon atoms per molecule. | 12-03-2009 |
| 20100041935 | USE OF A CATALYST BASED ON ITQ-6 ZEOLITE TO ISOMERIZE AN AROMATIC C8 CUT - A process for isomerizing an aromatic C8 cut uses a catalyst which comprises:
| 02-18-2010 |
| 20100056837 | Alkyl Aromatic Isomerization Process Using a Catalyst Comprising a UZM-8HS Composition - A process for isomerizing alkyl aromatic hydrocarbons using a catalyst comprising a zeolite and a platinum group metal component is described. The zeolite comprises a new family of zeolites designated UZM-8HS which are derived from UZM-8 zeolites by treating the UZM-8 with a fluoro-silicate salt, an acid, etc. The UZM-8HS zeolites have unique x-ray diffraction patterns. | 03-04-2010 |
| 20100069694 | Xylene Isomerization Process and Apparatus - Xylene isomerization processes, especially those processes in which ethylbenzene is also converted, are beneficially affected by adding benzene to the feed. | 03-18-2010 |
| 20100137667 | Aromatic Isomerization Catalyst and Isomerization Process - One exemplary embodiment can be an extruded C8 alkylaromatic isomerization catalyst. The extruded catalyst can include:
| 06-03-2010 |
| 20100179361 | Zeolitic Catalysts, Their Process for Preparation and their Applications - The invention describes a porous composite material that comprises a porous substrate based on a refractory inorganic oxide in which said substrate has a zeolite crystal content that is less than 25% by mass, whereby said crystals are dispersed homogeneously in the pores of said substrate, and the distribution coefficient that is measured by Castaing microprobe is between 0.75 and 1.25, and in which the total pore volume of said substrate represents at least 40% of the initial total pore volume of the substrate, and the mean diameter of the pores represents at least 50% of the mean diameter of the pores of the initial substrate, its process for preparation and its use as catalyst in the hydrocarbon feedstock conversion reactions. | 07-15-2010 |
| 20110046428 | Methods of Isomerizing Xylenes with a Catalyst Reduced in the Presence of Hydrogen and a Base - A xylene isomerization process includes introducing gas comprising hydrogen and a base to a reaction zone in which a catalyst comprising a Group VIII metal and a zeolite support resides. In one embodiment, the base may be formed in situ within the reaction zone from nitrogen and hydrogen that are introduced to the reaction zone. In another embodiment, the base is introduced directly to the reaction zone. The conditions in the reaction zone are effective to reduce the catalyst. A stream comprising C | 02-24-2011 |
| 20110105819 | ZEOLITE CATALYST ZEOLITE SECONDARY STRUCTURE - A zeolite secondary structure essentially free from binders and formed from zeolite powder (primary particles), wherein the tensile strength of the secondary structure is at least about 0.4 MPa. The use of the zeolite secondary structure materials as catalyst in hydrocarbon conversion processes. | 05-05-2011 |
| 20110245565 | Process for Xylene and Ethylbenzene Isomerization Using UZM-35 - Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: | 10-06-2011 |
| 20110245566 | PROCESS FOR XYLENE AND ETHYLBENZENE ISOMERIZATION USING UZM-35HS - Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: | 10-06-2011 |
| 20110263918 | Xylene Isomerization Process and Catalyst Therefor - The invention concerns a xylenes isomerization process for the production of equilibrium or near-equilibrium xylenes. The process utilizes a catalyst comprising HZSM-5 or MCM-49 and process conditions including a temperature of less than 295° C. and a pressure sufficient to maintain the xylenes in liquid phase. In embodiments, the process can be operated in a continuous mode with ppm levels of dissolved H | 10-27-2011 |
| 20110313223 | PROCESS FOR XYLENE AND ETHYLBENZENE ISOMERIZATION USING UZM-35 - Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolitic compositions represented by the empirical formula: | 12-22-2011 |
| 20120065446 | CATALYSTS, PROCESSES FOR PREPARING THE CATALYSTS, AND PROCESSES FOR TRANSALKYLATING AROMATIC HYDROCARBON COMPOUNDS - A catalyst comprising an aluminosilicate zeolite having an MOR framework type, an acidic MFI molecular sieve component having a Si/Al | 03-15-2012 |
| 20120283498 | PROCESS FOR ISOMERIZATION OF A C8 AROMATIC FRACTION IN THE PRESENCE OF A SPECIFIC CATALYST THAT CONSISTS OF A ZEOLITE/SILICON CARBIDE-TYPE COMPOSITE AND A HYDROGENATING-DEHYDROGENATING FUNCTION - A process for isomerization of an aromatic fraction that contains at least one aromatic compound that has eight carbon atoms per molecule is described, with said process comprising bringing said fraction into contact with a catalyst that comprises at least one hydrogenating-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table and a composite that is formed by a zeolite that is selected from among the EUO-, MTW- and MOR-structural type zeolites and silicon carbide SiC. | 11-08-2012 |
| 20120330077 | PROCESS FOR ISOMERIZING AN AROMATIC C8 CUT - The invention concerns a process for the isomerization of aromatic compounds containing 8 carbon atoms per molecule in the presence of a catalyst comprising at least one zeolite with structure type EUO, wherein said process is operated in the presence of water in the feed at the end of a catalyst activation period. | 12-27-2012 |
| 20130109899 | CATALYST AND PROCESS FOR HYDROCARBON CONVERSION | 05-02-2013 |
| 20130123558 | Aromatics Isomerization Using a Dual-Catalyst System - This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene which contain a substantial concentration of nonaromatics using a catalyst system which features the ability to both convert nonaromatics and to obtain an improved yield of para-xylene from the mixture relative to processes of the known art. | 05-16-2013 |
| 20140039234 | ISOMERISATION CATALYST PREPARATION PROCESS - A process for preparing an alkylaromatics isomerisation catalyst comprising at least 0.01% wt of platinum on a carrier comprising of from 1 to 9 wt % of ZSM-12 and inorganic binder, which process comprises treating the carrier with an impregnation solution comprising base and an anionic platinum complex which impregnation solution has a pH of from 5.5 to 8; and a process for the isomerisation of alkylaromatics with the help of catalyst thus obtained. | 02-06-2014 |
| 20140135550 | PROCESS FOR ISOMERIZING AN AROMATIC C8 CUT IN THE PRESENCE OF A CATALYST BASED ON AN EUO ZEOLITE AND A PARTICULAR SODIUM CONTENT - A process for isomerizing an aromatic cut containing at least one aromatic compound containing eight carbon atoms per molecule, which includes bringing the aromatic cut into contact with a catalyst containing a zeolite with structure type EUO, which catalyst has been prepared by obtaining a zeolite with structure type EUO having an overall Si/Al atomic ratio in the range 5 to 45, a sodium content in the range 500 to 5000 ppm by weight, with a Na/Al ratio in the range 5% to 20% by mole, and thereafter performing the following:
| 05-15-2014 |
| 20140155668 | Manufacturing Process - The invention relates to minimizing ammonia poisoning of a catalyst and to a xylene isomerization process using said catalyst. | 06-05-2014 |
| 20140179969 | ISOMERISATION CATALYST PREPARATION PROCESS - A process for preparing an alkylaromatics isomerisation catalyst comprising at least 0.01% wt of platinum on a carrier comprising of from 1 to 9 wt % of ZSM-12 and inorganic binder, which process comprises treating the carrier with an impregnation solution comprising a cationic platinum compound and having a pH of more than 9, and subsequently drying and calcining the impregnated carrier at a temperature of from 200 to 420° C.; and a process for the isomerisation of alkylaromatics with the help of catalyst thus obtained. | 06-26-2014 |
| 20140296601 | ISOMERIZATION PROCESS WITH MTW CATALYST - An extruded C | 10-02-2014 |
| 20140296602 | ISOMERIZATION PROCESS WITH MTW CATALYST - An extruded C | 10-02-2014 |
| 20140364668 | METHOD FOR ISOMERIZING AN AROMATIC C8 FRACTION IN THE PRESENCE OF A CATALYST CONTAINING AN EUO ZEOLITE AND A SPECIFIC BINDER - A process for isomerizing an aromatic cut containing at least one aromatic compound containing eight carbon atoms per molecule is described, comprising bringing said cut into contact with at least one catalyst comprising at least one metal from group VIII of the periodic classification of the elements, at least one zeolitic support comprising a zeolite selected from zeolites with structure type EUO and MOR, used alone or as a mixture, and at least one matrix, such that the specific surface area of the matrix in the zeolitic support of said catalyst is in the range 5 to 200 m | 12-11-2014 |
| 20150094510 | PROCESS FOR SYNTHESIS OF ALCOHOLS - Process and catalyst for upgrading gasoline comprising durene (1,2,4,5-tetramethylbenzene) and pseudodocumene, the process comprises hydroisomerization of durene (1,2,4,5-tetramethylbenzene) and pseudocumene (1,2,4-trimethylbenzene) contained in the gasoline in presence of a catalyst comprising a sulfided base metal supported on an acidic carrier, thereby converting durene (1,2,4,5-tetramethylbenzene) to isodurene (1,2,4,5-tetramethylbenzene) and prehnitene (1,2,3,4-tetramethylbenzene) and converting pseudocumene (1,2,4-trimethylbenzene) to mesitylene (1,3,5-trimethylbenzene). | 04-02-2015 |
| 20150321183 | MODIFIED CATALYST WITH STRUCTURE TYPE MTW, A METHOD FOR ITS PREPARATION AND ITS USE IN A PROCESS FOR THE ISOMERIZATION OF AN AROMATIC C8 CUT - The invention concerns a catalyst comprising at least one zeolite with structure type MTW, a matrix, at least one metal from group VIII of the periodic classification of the elements, said catalyst having a mesopore volume increased by at least 10% compared with its initial mesopore volume, which is generally in the range 0.55 to 0.75 mL/g, at the end of a treatment with steam at a partial pressure in the range 0.01 to 0.07 MPa and at a temperature in the range 300° C. to 400° C. for at least 0.5 hour. The invention concerns the process for the preparation of said catalyst as well as an isomerization process employing said catalyst. | 11-12-2015 |
| 20160039726 | Boroaluminosilicate Molecular Sieves and Methods for Using Same for Xylene Isomerization - Boroaluminosilicate molecular sieve catalysts are provided and are useful for hydrocarbon conversion reactions including isomerization of xylenes in C8 aromatics feedstocks to produce p-xylene. Advantageously, it has been found that the boroaluminosilicate molecular sieve catalysts of the invention are more selective than conventional commercial xylene isomerization catalysts, resulting in reduced formation of transmethylation byproducts (C7 and C9 aromatics) while simultaneously providing a high degree of xylene isomerization. | 02-11-2016 |
| 20160039727 | Xylene Isomerization Process and Catalyst Therefor - The invention concerns a xylenes isomerization process for the production of equilibrium or near-equilibrium xylenes from a feedstream comprising phenol and/or styrene. | 02-11-2016 |
| 20160059224 | Method and Catalyst System for the Production of Para-Xylene - A catalyst system is disclosed for producing para-xylene from a C | 03-03-2016 |
| 20160184809 | MODIFICATION OF A ZEOLITE OF TYPE EUO, AND ITS USE IN THE ISOMERIZATION OF AROMATIC C8 COMPOUNDS - A process is described for preparing a catalyst comprising at least one zeolite with a modified EUO structure type, at least one matrix and at least one metal from group VIII of the periodic classification of the elements. Said catalyst is used in a process for the isomerization of an aromatic feed comprising at least one compound containing eight carbon atoms per molecule. | 06-30-2016 |
