Abstract: The subject invention comprises a hydrocarbon-conversion process using a zeolitic catalyst comprising very low concentrations of non-zeolitic material and featuring a gradient in crystallinity decreasing from the outer portion to the center and an intrusion pore volume of at least 0.6 cc/gram. The catalyst is particularly effective in a xylene-isomerization process comprising ethylbenzene conversion.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The present invention provides a catalyst comprising metallic Pt and/or Pd supported on a binder-free zeolite for producing light aromatic hydrocarbons and light alkanes from hydrocarbonaceous feedstock, wherein the amount of metallic Pt and/or Pd is of 0.01-0.8 wt %, preferably 0.01-0.5 wt % on the basis of the total weight of the catalyst, and the binder-free zeolite is selected from the group consisting of mordenite, beta zeolite, Y zeolite, ZSM-5, ZSM-11 and composite or cocrystal zeolite thereof. The present invention also provides a process for producing light aromatic hydrocarbons and light alkanes from hydrocarbonaceous feedstock using said catalyst.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.

Abstract: 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.

Abstract: This invention relates to a process for converting a hydrocarbon feedstock, comprising the steps of (A) feeding the feedstock to a reactor or adsorption unit; (B) contacting the feedstock in the reactor or adsorption unit with a solid particulate material useful for converting the feedstock under conversion conditions; (C) withdrawing converted feedstock from the reactor; and (D) removing, under the conversion conditions for a fractional time of step (B), at least a portion of the solid particulate material while the feedstock is being fed to the reactor or adsorption unit, wherein the portion is more than 0.1 wt. % of the solid particulate material in the reactor or adsorption unit and wherein the fractional time is less than 95% of the time of step (B).

Abstract: Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolites are active and selective in the isomerization of xylenes and ethylbenzene.

Abstract: A catalyst comprising an aluminosilicate zeolite having an MOR framework type, an acidic MFI molecular sieve component having a Si/Al2 molar ratio of less than 80, a metal component comprising one or more elements selected from groups VIB, VIIB, VIII, and IVA, an inorganic oxide binder, and a fluoride component.

Abstract: Xylene isomerization processes, especially those processes in which ethylbenzene is also converted, are beneficially affected by adding benzene to the feed.

Abstract: 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 C8 aromatics, e.g., xylenes and ethylbenzene may then be fed to the reaction zone containing the reduced catalyst. The reaction zone may be operated at conditions effective to isomerize the xylenes and hydrodealkylate the ethylbenzene. The xylene loss during the isomerization of the xylenes is lowered as a result of using the catalyst reduced in the presence of the gas comprising a base and hydrogen.

Abstract: A method for preparing a family of zeolites, examples of which have been designated UZM-5, UZM-5P and UZM-6, and are represented by the empirical formula Mmn+Cgh+Rrp+Al(1-x)ExSiyOz The method includes forming a Charge Density Mismatch (CDM) reaction mixture comprising reactive sources of Al, Si, optionally a framework element, E, and at least one organic nitrogen containing cation template, C, in the hydroxide form. After the CDM mixture is mixed while aging, an organic cation crystallization template, R, and at least one alkali metal or alkaline earth metal, M, is added. The combined final reaction mixture is reacted with mixing to produce the zeolite, which may be used in various hydrocarbon conversion processes.

Abstract: Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolitic compositions represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolitic compositions are active and selective in the isomerization of xylenes and ethylbenzene.

Abstract: Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolitic compositions represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolitic compositions are active and selective in the isomerization of xylenes and ethylbenzene.

Abstract: Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolites are active and selective in the isomerization of xylenes and ethylbenzene.

Abstract: A new family of crystalline aluminosilicate zeolites has been synthesized. These zeolites are represented by the empirical formula. Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the propyltrimethylammonium cation and E is a framework element such as gallium. These zeolites are similar to MWW but are characterized by unique x-ray diffraction patterns and compositions and have catalytic properties for carrying out various hydrocarbon conversion processes.

Abstract: A new family of crystalline aluminosilicate zeolitic compositions, UZM-35 compositions, has been synthesized. These zeolitic compositions are represented by the empirical formula. Mmn+Rr+Al1-xExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These compositions comprise a MSE zeolite, a MFI zeolite and an ERI zeolite. The compositions are similar to MCM-68 but are characterized by unique x-ray diffraction patterns and have catalytic properties for carrying out various hydrocarbon conversion processes.

Abstract: 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 H2 in the feed and in other embodiments in a cyclic mode without the H2 in feed but with periodic regenerations using a feed having low ppm levels of H2.

Abstract: Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolites are active and selective in the isomerization of xylenes and ethylbenzene.

Abstract: Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolites are active and selective in the isomerization of xylenes and ethylbenzene.

Abstract: A new family of crystalline aluminosilicate zeolitic compositions, UZM-35 compositions, has been synthesized. These zeolitic compositions are represented by the empirical formula. Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These compositions comprise a MSE zeolite, a MFI zeolite and an ERI zeolite. The compositions are similar to MCM-68 but are characterized by unique x-ray diffraction patterns and have catalytic properties for carrying out various hydrocarbon conversion processes.

Abstract: 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.

Abstract: A new family of crystalline aluminosilicate zeolites has been synthesized. These zeolites are represented by the empirical formula. Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the propyltrimethylammonium cation and E is a framework element such as gallium. These zeolites are similar to MWW but are characterized by unique x-ray diffraction patterns and compositions and have catalytic properties for carrying out various hydrocarbon conversion processes.

Abstract: 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.

Abstract: One exemplary embodiment can be an ion-exchanged xylene isomerization catalyst. The ion-exchanged xylene isomerization catalyst can include: about 1-about 99%, by weight, of at least one of MFI, MEL, EUO, FER, MFS, MTT, MTW, TON, MOR, and FAU zeolite; about 1-about 99%, by weight, of a binder having an aluminum phosphate; and no more than about 350 ppm, by weight, of a noble metal based on the weight of the catalyst. Generally, the catalyst has a quotient of (CO area)/(weight % of the noble metal) of no more than about 0.10.

Abstract: 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.

Abstract: One exemplary embodiment can be an ion-exchanged xylene isomerization catalyst. The ion-exchanged xylene isomerization catalyst can include: about 1-about 99%, by weight, of at least one of MFI, MEL, EUO, FER, MFS, MTT, MTW, TON, MOR, and FAU zeolite; about 1-about 99%, by weight, of a binder having an aluminum phosphate; and no more than about 350 ppm, by weight, of a noble metal based on the weight of the catalyst. Generally, the catalyst has a quotient of (CO area)/(weight % of the noble metal) of no more than about 0.10.

Abstract: A process for manufacturing a synthetic porous crystalline molecular sieve requires an aqueous reaction mixture comprising a source of X2O3 (X is a trivalent element), a source of YO2 (Y is a tetravalent element) and a source of MOH (M is an alkali metal). The H2O/MOH molar ratio is within the range of 70 to 126 and the source of X2O3 and YO2 is an amorphous material containing both X2O3 and YO2 and having YO2/X2O3 molar ratio of 15 or less. The molecular sieve products are useful as catalysts and/or absorbents. Such molecular sieves having MFI structure type, TON structure type or the structure type of zeolite beta and a composition involving the molar relationship (n) YO2:X2O3 wherein n is from 2 to less than 15 are novel compositions of matter.

Abstract: 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 C8 aromatics, e.g., xylenes and ethylbenzene may then be fed to the reaction zone containing the reduced catalyst. The reaction zone may be operated at conditions effective to isomerize the xylenes and hydrodealkylate the ethylbenzene. The xylene loss during the isomerization of the xylenes is lowered as a result of using the catalyst reduced in the presence of the gas comprising a base and hydrogen.

Abstract: 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: i) synthesizing at least one zeolite with structure type EUO having an overall Si/Al atomic ratio in the range 5 to 45; ii) dealuminating the zeolite obtained at the end of said step i) using at least one treatment with an aqueous solution of a mineral acid or an organic acid, such that at least 10% by weight of the aluminium atoms are extracted from said zeolite from said step i); iii) forming said dealuminated zeolite with a matrix; iv) depositing at least one metal from group VIII of the periodic table of the elements, the order of carrying out said steps iii) and iv) being inconsequential following on from said step ii).

Abstract: 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: a) a step for treatment of a zeolite with structure type EUO in the presence of at least one molecular compound containing at least one silicon atom, during which said compound, with a diameter greater than the maximum pore opening diameter in said zeolite, is deposited in the gas phase on the outer surface of said zeolite; b) at least one heat treatment step; c) forming said zeolite with a binder; d) at least one step for introducing at least one metal from group VIII of the periodic table onto a support based on said modified and formed zeolite.

Abstract: A catalyst is described comprising at least one zeolite with structure type EUO, at least one zeolite with structure type NES, at least one metal selected from metals from groups IIIA, VIIB, VIIB and VIII 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.

Abstract: A catalyst is described which comprises at least one modified EU-1 zeolite containing silicon atoms and aluminum 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 aluminum atoms representing more than 20% by weight of the total number of aluminum 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.

Abstract: The invention relates to a multi-step chemical transformation process for the production of 2,6-dimethylnaphthalene starting from one or more naphthalene hydrocarbons or hydrocarbon blends containing the same, one or more benzene hydrocarbons and, optionally, a methylating agent reacted in the presence of a catalyst containing a zeolite belonging to the MTW structural group, where hydrogen is fed in at least one of the steps.

Abstract: The present invention provides: a process for preparing a vinyl polymer containing a halogen in an amount of 1,000 mg or less per kilogram, in which a vinyl polymer containing the halogen produced by atom transfer radical polymerization of a vinyl monomer is heated at a temperature in the range of 140 to 250° C. to dehalogenate the vinyl polymer; a vinyl polymer obtained by the process; and a hydrosilylation-reactive curable composition containing the vinyl polymer.

Abstract: 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.

Abstract: 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.

Abstract: One exemplary embodiment can be an extruded C8 alkylaromatic isomerization catalyst. The extruded catalyst can include: about 2-about 20%, by weight, of an MTW zeolite; about 80-about 98%, by weight, of a binder including an alumina; about 0.01-about 2.00%, by weight, of a noble group metal calculated on an elemental basis; and about 100 ppm-less than about 1000 ppm, by weight, of at least one alkali metal calculated on an elemental basis. Generally, the weight percents of the MTW zeolite, the binder, the noble group metal, and the at least one alkali metal are based on a weight of the extruded catalyst.

Abstract: This invention relates to hydrocarbon conversion processes using a new family of crystalline aluminosilicate compositions designated the UZM-27 family. These include the UZM-27 and UZM-27HS which have unique structures. UZM-27 is a microporous composition which has a three-dimensional structure and is obtained by calcining the as synthesized form designated UZM-27P. UZM-27HS is a high silica version of UZM-27 and includes an essentially pure silica version of UZM-27.

Abstract: This invention relates to hydrocarbon conversion processes using crystalline zeolitic compositions designated the UZM-26 and UZM-26X. UZM-26 is a microporous three-dimensional zeolitic composition that is derived from UZM-26P (an as synthesized layered composition) by calcination. UZM-26X is a microporous three-dimensional zeolitic composition that is derived from UZM-26PX by calcination, where UZM-26PX is an ion-exchanged form of UZM-26P.

Abstract: One exemplary embodiment can be an extruded C8 alkylaromatic isomerization catalyst. The extruded catalyst can include: about 2-about 20%, by weight, of an MTW zeolite; about 80-about 98%, by weight, of a binder including an alumina; about 0.01-about 2.00%, by weight, of a noble group metal calculated on an elemental basis; and about 100 ppm-less than about 1000 ppm, by weight, of at least one alkali metal calculated on an elemental basis. Generally, the weight percents of the MTW zeolite, the binder, the noble group metal, and the at least one alkali metal are based on a weight of the extruded catalyst.

Abstract: Xylene isomerization processes, especially those processes in which ethylbenzene is also converted, are beneficially affected by adding benzene to the feed.

Abstract: 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.

Abstract: A process for isomerizing an aromatic C8 cut uses a catalyst which comprises: at least one ITQ-6 zeolite; at least one metal from group VIII of the periodic table; at least one binder; optionally, at least one metal selected from the group formed by elements from groups IIIA, IVA and VIIB of the periodic table; and optionally, sulphur.

Abstract: A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of refractory oxide containing at least 97% by volume of pores having a pore size ranging from about 15 ? to about 30 ? and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2 theta (?). The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.

Abstract: The present invention relates to a process of preparing dialkylnaphthylenes and polyalkylenenaphthyleneates dialkylnaphthalenes and polyalkylenenaphthalates.