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4840929 Zeolite beta with improved regeneration characteristics  
The present invention describes a method for preparing a noble metal Zeolite Beta containing catalyst with improved platinum redispersion characteristics. The method includes using a mineral acid...
4839320 Method for treating and stabilizing zeolite catalysts  
This invention relates to a method for treating zeolite-containing catalysts. It is particularly suitable for making catalytic compositions made up of large pore zeolites of which a large...
4837397 Nobile metal containing catalysts of improved stability  
The addition of a compound containing a complex cation of zirconium to a zeolite improves the properties of the zeolite and also improves the dispersibility characteristics of nobel metal...
4830998 Hydrocarbon isomerization catalyst, process for its preparation, and use thereof  
Catalysts for the isomerization of hydrocarbons, particularly normal paraffins having from 4 to 7 carbon atoms, as well as a process for the preparation of the catalyst and a process for their use...
4824816 Method for producing stabilized zeolite catalysts  
This invention relates to a method for producing zeolite-containing catalysts. It is particularly suitable for making catalytic compositions made up of large pore zeolites of which a large...
4822762 Catalyst for the conversion of hydrocarbons  
A nonacidic hydrocarbon conversion catalyst is disclosed which is prepared by incorporating potassium hydroxide into a composite of nonacidic L-zeolite and amorphous silica. A preparation procedure...
4816538 Nickel-containing hydrocracking catalyst  
A process for producing a high octane gasoline from a hydrocarbon feedstock in which the feedstock is contacted in the presence of hydrogen under hydrocracking conditions, preferably ammonia-rich...
4812223 Hydrocracking naphthas using mildly steamed, noble metal-containing zeolite beta  
The present invention relates to a method for enhancing the naphtha hydrocracking activity of a noble metal-containing zeolite beta catalyst by mildly steam treating the catalyst prior to use.
4808563 Molybdenum-tungsten-containing catalyst for methane conversion process  
A catalyst is disclosed which comprises a molybdenum-tungsten-containing complex represented by the formula Mo a W b M c A d O e wherein M is selected from the group consisting of one or more...
4808560 Catalyst for simultaneous desulfurization and dewaxing of residua  
A catalyst system comprising metal oxide or sulfide hydrogenation component on a ZSM-5 type zeolite support provides excellent hydrowaxing of various residua while simultaneously reducing the...
4804647 Dewaxing catalysts and processes employing titanoaluminosilicate molecular sieves  
Dewaxing processes for hydrocarbon feedstocks are disclosed using novel catalysts comprising titanoaluminosilicates. The products of the instant dewaxing processes are characterized by lower pour...
4791083 Catalytic cracking catalysts comprising non-zeolitic molecular sieves  
Cracking catalysts and their use in cracking processes are disclosed. The cracking catalysts are prepared using novel non-zeolitic molecular sieves and, optionally, traditional zeolitic...
4789656 Crystalline silicate zeolite beta of improved stability  
A process is described for preparing a binder-free Zeolite Beta containing catalyst which has a highly dispersed noble metal incorporated into the framework. The process comprises steaming Zeolite...
4789655 Catalyst of high mordenite content for isomerizing normal paraffins and process for producing the catalyst  
A catalyst for isomerizing a hydrocarbon cut of high n-paraffin content is disclosed. The catalyst is obtained by controlled oxychlorination of a solid containing at least one group VIII metal...
4789654 Hydrotreating catalysts  
A catalyst comprising metal components selected from Group VIA and Group VIII of the Periodic Table on a carrier comprising an alumina-containing inorganic oxide and a faujasite type Y zeolite...
4780436 Zeolite of omega structure catalysts  
The invention concerns a new stabilized and dealuminated zeolite of OMEGA structure, characterized by: a total SiO 2 /Al 2 O 3 molar ratio of at least 10, a sodium content lower than 0.5%...
4778666 Crystallization method employing microwave radiation  
A crystallization process employing microwave energy is described. The process is especially useful in the manufacture of porous crystalline materials.
4777157 Hydrocracking catalyst  
A hydrocracking process, of especial use in producing high octane gasoline from gas oils and the like, comprises contacting a gas oil or other hydrocarbon feedstock under hydrocracking conditions...
4767734 Hydrocarbon conversion process and catalyst for selectively making middle distillates  
A hydrocarbon conversion catalyst useful for converting hydrocarbon feeds to midbarrel products is prepared by calcining a crystalline aluminosilicate zeolite having cracking activity in the...
4762813 Hydrocarbon conversion catalyst  
A hydrocarbon conversion catalyst useful for converting hydrocarbon feeds to midbarrel products is prepared by extruding a mixture of a porous, inorganic refractory oxide component and a...
4757041 Catalysts for cracking and dewaxing hydrocarbon oils  
Heavy oils are simultaneously subjected to hydrocracking and dewaxing using a catalyst comprising zeolite beta and an X or Y or other faujasite zeolite together with a hydrogenation component. The...
4749671 Exhaust gas cleaning catalyst and process for production thereof  
An exhaust gas cleaning catalyst composed of a refractory three-dimensional structure and a catalytically active substance supported thereon. That surface or part of the catalyst which makes...
4744919 Method of dispersing particulate aerosol tracer  
A particulate aerosol tracer which comprises a particulate carrier of sheet silicate composition having a particle size up to one micron, and a cationic dopant chemically absorbed in solid solution...
4740487 Composite catalyst of ruthenium of zeolite and a group VI and/or group VIII metal on refractory  
A novel catalyst composition comprising ruthenium or a ruthenium containing material together with a zeolite support material and a refractory support impregnated with a Group VI or Group VIII...
4738941 Hydrocracking catalyst for the production of middle distillates  
The invention relates to a new hydrocarbon hydroconversion catalyst, which is a mixture of an amorphous matrix, a zeolite and at least one metal of Group VIII and optionally of Group VI, the...
4738940 Novel hydrocracking or cracking catalyst for hydrocarbon charges  
The invention relates to a novel hydrocarbon hydroconversion catalyst. This catalyst is a mixture of a matrix and a zeolite, the zeolite having a molar ratio SiO 2 /Al 2 O 3 comprised between...
4735929 Catalytic composition for the isomerization of paraffinic hydrocarbons  
Superior isomerization performance is obtained with a catalytic composition comprising a Group VIII noble metal and a hydrogen form mordenite incorporated with alumina. The superior performance is...
4735928 Hydrocracking catalyst  
Process for hydrocracking a crude oil feed, hydrocracking catalyst employed therein and the process for its preparation. The instant invention employs new aluminosilicate zeolite catalysts derived...
4721694 Platinum-barium-type L zeolite  
A new catalyst is disclosed which is useful for dehydrocyclizing alkanes. This catalyst contains a type L zeolite, a Group VIII metal, and an alkaline earth metal. Preferably, this catalyst...
4721695 Platinum-barium-zeolite of L family  
A new catalyst is disclosed which is useful for dehydrocyclizing alkanes. This catalyst contains a zeolite of the L family, a Group VIII metal, and an alkaline earth metal.
4717700 Catalyst drying and activation methods  
A zeolite-based catalyst containing a metal oxide or oxide complex is dried by heating while in contact with the gas. Heat input to the catalyst and hence the rate of catalyst temperature increase...
4710485 Paraffin isomerization catalyst  
An isomerization catalyst which is useful for lowering the normal paraffin content of a hydrocarbon oil feedstock is described. The catalyst comprises an intermediate pore size...
4708857 Process for preparing a crystalline iron-borosilicate  
A crystalline ironborosilicate comprises a molecular sieve material having the following composition in terms of mole ratios of oxides 1.0±0.3 M n /2 O; (a Fe 2 O 3 :b B 2 O 3 ):y SiO 2 .z H...
4701315 Zeolite L and process for its preparation  
A zeolite related to zeolite L and having a characteristic cylindrical morphology may be prepared from a crystallization gel comprising (in mole ratios of oxides): K 2 O/SiO 2 --0.22-0.36 H...
4699894 Highly active and highly selective aromatization catalyst  
A highly selective zeolitic reforming catalyst is disclosed that contains a promoter selected from the group consisting of iron, cobalt, and titanium; and that has a platinum to promoter weight...
4692423 Method for preparing structured catalytic solids  
A method for manufacturing structured catalysts in which a zeolite is uniformly dispersed on at least one surface of a porous support. The porous support may be organic or inorganic, and in the...
4683050 Mild hydrocracking with a catalyst containing an intermediate pore molecular sieve  
Mild hydrocracking is accomplished with a catalyst containing an intermediate pore molecular sieve, such as silicalite or a ZSM-5 type zeolite.
4683214 Noble metal-containing catalysts  
A process is disclosed for preparing a noble metal-containing zeolite catalyst of high noble metal dispersion. The process of crystallizing a zeolite from a forming mixture which contains an...
4681865 Catalyst for the production of aromatic hydrocarbons  
A catalyst for production of aromatic hydrocarbons and a process for producing aromatic hydrocarbons from various hydrocarbons using said catalyst are disclosed. The catalyst comprises a L-type...
4680280 Sulfur tolerance of zeolitic reforming catalysts  
A reforming catalyst comprising a large-pore zeolite and at least one reforming catalytic metal selected from the group consisting of the Group VIII noble metals, having enhanced sulfur tolerance...
4672049 Hydroprocessing catalyst  
This invention provides a novel hydrocracking catalyst composition that contains Zeolite Beta having a framework boron content, a solid source of alumina, and a hydrogenation component. It further...
4672048 Hydrocracking catalyst  
Hydrocracking catalysts comprise a Group VIB and/or non-noble metal Group VIII hydrogenation component in conjunction with an LZ-210 zeolite preferably of SiO 2 :Al 2 O 3 greater than 9.0, which...
4666692 Silica-based synthetic material containing titanium in the crystal lattice and process for its preparation  
The invention provides a silica-based crystalline material that incorporates titanium into the crystal lattice. A process for preparing this material is also disclosed which is based on the...
4666874 Stereodifferentiating hydrocarbon conversion zeolite catalysts  
A stereo-differentiating catalyst containing metal is prepared by contacting a metal-containing acidic molecular sieve material, such as a zeolite with an optically active base, such as amine....
4665042 Catalysts for the conversion of syn gas  
A catalyst system for the conversion of synthesis gas in a single stage to liquid hydrocarbons comprises (a) a copper-containing alcohol synthesis catalyst, (b) an iron-containing modifier...
4663300 Pollution control catalyst  
A catalyst composition and a process are presented for the reduction of nitrogen oxides in flue gases to nitrogen. The catalyst comprises titania, mordenite and a metal component. The preferred...
4659743 Process and catalyst for converting synthesis gas to liquid hydrocarbon mixture  
Synthesis gas containing CO and H 2 is converted to a high-octane hydrocarbon liquid in the gasoline boiling point range by bringing the gas into contact with a heterogeneous catalyst including,...
4657874 Redispersion of agglomerated noble metals on zeolite catalysts  
A process is described for rejuvenation of a deactivated highly siliceous noble metal-containing zeolite catalyst having a framework silica to alumina ratio of at least about 20 which contains...
4652538 Catalysts for conversion of syngas to liquid motor fuels  
Synthesis gas comprising carbon monoxide and hydrogen is converted to C 5 + hydrocarbons suitable for use as liquid motor fuels by contact with a dual catalyst composition capable of ensuring the...
4645752 Hydrocracking catalyst and process for manufacturing the same  
The invention concerns a new catalyst containing (a) a zeolite carrier, (b) a metal from group VIII and (c) an additional metal selected from tin, germanium and lead, forming an alloy with the...
Matches 401 - 450 out of 675 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >