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5641393 High-silica zeolite SSZ-37 and methods of making and using same  
A crystalline zeolite high-silica SSZ-37 is prepared using a N,N-dimethyl-4-azoniatricyclo [5.2.2.0 (2,6) ] undec-8-ene cation as a template wherein said zeolite is used in hydrocarbon conversion...
5633216 Process for sweetening petroleum cuts without regular addition of alkaline solution using a basic solid catalyst  
A process for sweetening a petroleum cut containing mercaptans, wherein said petroleum cut is subjected to oxidation conditions by its being passed in the presence of air in contact with a porous...
5625107 Catalyst for conversion of methane to ethylene, preparation thereof, and process for manufacturing ethylene using said catalyst  
The present invention relates to a new catalyst for converting methane into ethane, preparation thereof, and process for manufacturing ethylene using said catalyst. The conversion reaction catalyst...
5620937 Pretreatment method for increasing conversion of reforming catalyst  
A pretreatment process is disclosed for increasing conversion and reducing the fouling rate of reforming catalysts wherein the catalyst is pretreated at a temperature from 1025° F. to 1275° F. in...
5616170 Adsorptive separation of nitrogen from other gases  
Chabazite, offretite, erionite, levyne, mordenite, gmelinite, zeolite A, zeolite T, EMC-2, ZSM-3, ZSM-18, ZK-5, zeolite L, and beta zeolite whose exchangeable cations are composed of 95 to 50%...
5614453 Catalyst containing zeolite beta and a pillared clay  
A composition of matter comprising zeolite Beta and a pillared clay is especially suited for use in combination with one or more hydrogenation components as a catalyst for hydrocracking various...
5560748 Detergent compositions comprising large pore size redox catalysts  
Laundry and cleaning compositions which comprise large pore size redox catalysts.
5558851 Preparation of aluminosilicate zeolites  
A method is disclosed for preparing a crystalline aluminosilicate zeolite from a reaction mixture containing only sufficient water so that the reaction mixture may be shaped if desired. In the...
5547905 Catalyst and a process for preparing carboxylic acids using the catalyst  
A catalyst comprising 70-99% by wt. of cobaltic salt and 1-30% by wt. of ferric salt, the acid component of the salt being such as acetate; propionate; naphthenate adipate and phthalate; a process...
5540833 Sulfur tolerant bimetallic zeolitic reforming catalysts  
New compositions of matter comprise a metal from the group consisting of platinum, rhodium and palladium, a metal from the first row of Group VIII of the Periodic Table and a nonacidic L-zeolite. A...
5518976 Catalyst for purifying exhaust gas and method for purifying exhaust gas  
A catalyst for purifying exhaust gas comprising crystalline iridium silicate having a Si/Ir atomic ratio of 50 to 800 and a Si/Al atomic ratio of not less than 15. The catalyst exhibits excellent...
5516961 Dehydrogenation using sulfur tolerant zeolite catalyst  
A process is provided for catalyst dehydrogenation of light paraffinic hydrocarbons using a catalyst comprising a noble metal and an intermediate pore size zeolite having a specified alkali...
5510553 Catalytic dehydrogenation of alkylaromatic hydrocarbons  
Alkylaromatic hydrocarbons are dehydrogenated into alkenylaromatic hydrocarbons by contacting them in the absence of molecular oxygen with a supported catalyst of the redox type wherein the metal...
5506182 Modified zeolite Y catalyst composition  
A catalyst composition comprising a modified zeolite and a binder mixed with a high degree of mixing has high hydrothermal resistance and exhibits high activities in various catalytic reactions,...
5494870 Distillate hydrogenation catalyst  
A process and catalyst are provided for the hydrogenation of a hydrocarbon feedstock consisting essentially of hydrocarbon boiling between about 150° F. and 700° F. at atmospheric pressure. The...
5494879 Catalyst for the reduction of sulfur dioxide to elemental sulfur  
The inventive catalysts allow for the reduction of sulfur dioxide to elemental sulfur in smokestack scrubber environments. The catalysts have a very high sulfur yield of over 90% and space velocity...
5492679 Zeolite/catalyst wall-flow monolith adsorber  
An exhaust system for an internal combustion engine having a primary catalytic converter located downstream of the engine and a hydrocarbon adsorber located downstream of the primary converter. The...
5491119 Zeolite L  
Potassium zeolites of type L in which the crystals are very flat cylinders of "hockeypuck" or "coin" shape may be prepared by adjusting the K 2 O/SiO 2 and SiO 2 /Al 2 O 3 ratio and including...
5489561 Catalyst for exhaust gas purification  
An exhaust gas purifying catalyst includes a metal-containing silicate and a noble metal active species carried by the metal-containing silicate. The metal-containing silicate has a solid acid...
5489722 Dehydrogenation processes using catalysts comprising catalytic metal on a nonacidic support  
Organic compounds are dehydrogenated by contact with a catalyst prepared by oxidizing and then sulfiding a composition comprising Group VIIIA (first or second row) catalytic metal on a nonacidic...
5472681 Fe-containing zeolite KL  
The crystal size and shape of zeolite KL can be improved by forming the zeolite from a synthesis mixture in which the molar ratio of K 2 O/SiO 2 is 0.18 to 0.36, and in which the synthesis...
5468700 Hydrocarbon conversion catalyst for use in selectively making middle distillates  
A hydrocarbon conversion catalyst useful for converting hydrocarbon feeds to midbarrel products is prepared by extruding a mixture of an inorganic refractory oxide component and a crystalline...
5468710 Compositions comprising sulfided nickel and alumina useful as dehydrogenation catalysts  
Compositions of matter comprising sulfided nickel and nonacidic alumina, and having certain ratios of specific peak areas for nickel, for aluminum, for sulfide ion and/or for cesium, as determined...
5464799 Zeolite NU-85 catalyst  
A zeolite, designated NU-85, is an intergrowth of zeolites EU-1 and NU-87. The zeolite is a useful catalyst in a wide variety of hydrocarbon conversion reactions including isomerization and...
5464527 Hydrocracking process for producing middle distillates  
The selectivity of a midbarrel hydrocracking process for middle distillates is significantly increased by using a catalyst containing a Y zeolite that has been exchanged with rare earth cations....
5462904 Process of making dehydrogenation catalysts by oxidizing and sulfiding catalytic metal on a nonacidic support  
The process of the invention comprises oxidizing and then sulfiding materials comprising Group VIA or Group VIIIA (first or second row) catalytic metal on a nonacidic porous support, to produce...
5461016 High-stability catalyst containing a platinum group metal and nickel on zeolite L and a binder  
Reforming selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing a platinum-group metal, a nonacidic large-pore molecular sieve, and a metal...
5457268 Selective oxidation catalysts for halogenated organics  
The invention relates to a process and a catalyst composition for the destruction of volatile organic compounds (VOCs). The process includes the step of contacting the VOCs with an...
5414201 Combined sorbent/catalyst system  
A process and a sorbent/catalyst composition are described for the oxidation of volatile organic compounds. The process uses the steps of adsorbing a volatile organic compound in a first segment of...
5413977 Catalyst containing zeolite beta and a layered magnesium silicate  
A composition of matter comprising zeolite Beta and a layered magnesium silicate such as sepiolite is especially suited for use in combination with one or more hydrogenation components as a...
5413976 Exhaust gas purification catalyst  
An exhaust gas purifying catalyst includes an active compound, including platinum (Pt) and iridium (Ir), as an essential active compound base and any combination of two or more metals of terbium...
5409671 Catalytic converter for treating exhaust gas  
A catalytic convertor for treating exhaust gas includes a first catalyst layer formed on a base material and a second catalyst layer formed on the first catalyst layer. The first catalyst layer is...
5401704 Hydrocracking catalyst and process using small crystal size zeolite Y  
There is provided a process and a catalyst for hydrocracking hydrocarbons, such as gas oils. The catalyst comprises a hydrogenating metal and small crystal size zeolite Y. The zeolite Y may have a...
5384296 Thermally stable noble metal-container zeolite catalyst  
A zeolite catalyst composition having increased resistance to agglomeration and/or migration of its noble metal component at high temperatures and a method for preparing the catalyst composition...
5378669 Method for treating a catalyst  
A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst,...
5376610 Catalyst for exhaust gas purification and method for exhaust gas purification  
A catalyst for exhaust gas purification has at least one monolith carrier, at least one first catalyst layer having a three-way catalytic activity, provided on the carrier, and a second catalyst...
5371056 Oxidative diesel control catalyst  
An oxidative diesel control catalyst is disclosed which has a high conversion rate for hydrocarbons and carbon monoxide and an inhibited oxidation effect on nitrogen oxides and sulfur dioxides and...
5366945 Supported heteropoly acid catalysts  
There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is...
5358917 Hydrocarbon conversion catalyst  
An improved hydroconversion process, particularly a hydrocracking process, employs a supported catalyst containing metals of Group VI and/or VIII. The catalyst support comprises a crystalline...
5358916 Catalyst for purifying exhaust gas  
A catalyst for purifying exhaust gas, comprising a zeolite carrier having a mole ratio of SiO 2 /Al 2 O 3 of from 20 to 200, and a compound oxide of copper and silicon supported on the carrier....
5356846 Hydrorefining catalyst containing ruthenium sulphide, its synthesis and hydrorefining process using the said catalyst  
The present invention relates to a hydrorefining catalyst containing ruthenium sulphide including the synthesis thereof and also to a process for hydrorefining hydrocarbon feedstocks using the...
5354720 Reduction in the quantity of NO.sub.x in lean exhaust gas of motor vehicle engines  
A catalyst is described for reducing the quantity of nitrogen oxides in lean exhaust gas of motor vehicle engines. The catalyst contains, on a structure reinforcing body, a first catalytic coating...
5346681 Synthetic aluminosilicates and their use as heterogeneous equilibration catalysts  
A synthetic aluminosilicate was prepared by (I) forming a gel by hydrolysis, with water or a mixture of water and alkanol, at a pH of 7.0 to 9.5, of (a) 10 to 90 mol percent of monomeric and/or...
5338715 Catalyst for exhaust gas purification  
A catalyst for exhaust gas purification having a crystalline silicate including an oxide of an alkali metal and/or hydrogen ion, aluminum oxide, an oxide of an alkaline earth metal, Ca, Mg, Sn, or...
5336651 Catalysts and methods for denitrization  
A TiO 2 containing catalyst for denitrizing nitrogen oxides in the presence of a hydrocarbon as a reducing agent is disclosed. There are also disclosed denitrizing catalysts which contain zeolite...
5330945 Catalyst for treatment of diesel exhaust particulate  
A preferred catalytically active solid acid material, zeolite, forms the basis of a washcoat effective for treating diesel-fueled engine exhaust to reduce emission of particulate. In a preferred...
5328675 Transition-metal-aluminosilicate hydrocarbon conversion catalysts having an L type structure, ECR-22-D  
This invention relates to novel zeolitic compositions having zinc as well as aluminum and silicon in the framework tetrahedral positions. The composition has a structure similar to type-L...
5304601 Catalysts based on a faujasite and its application  
A catalyst is provided which contains 1 to 99 wt. % of an inorganic binder and 99 to 1% of a zeolite consisting of a faujasite having an Si:Al synthesis ratio at least equal to 3 and 30 and the...
5302568 Hydrogenation catalyst and production process thereof  
A catalyst for hydrogenation use in which the carrier of the catalyst comprises at least one compound from oxides and hydroxides of aluminum, silicon, titanium, zirconium, magnesium and iron,...
5294579 L-type zeolite and catalyst for the production of aromatic hydrocarbons  
There are disclosed a new L-type zeolite and a catalyst comprising said zeolite, having a high and persistent catalytic activity for a long-term production of aromatic hydrocarbon and a process for...
Matches 251 - 300 out of 676 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >