|
Match
|
Document |
Document Title |
|
|
5073668 |
Process for the dealumination and ion exchange of zeolites
The instant invention comprises a process for concurrently dealuminating and ion exchanging an acid stable sodium ion-containing zeolite by contacting the zeolite with an about 0.5 M to about 3 M...
|
|
|
5073530 |
Hydrocracking catalyst and process
This invention provides an improved hydrocracking catalyst which includes an inorganic oxide component, such as alumina, a hydrogenation component, such as a base metal or a noble metal and a...
|
|
|
5071805 |
Catalyst system for hydrotreating hydrocarbons
This invention provides a layered catalyst system for hydro-denitrification of hydrocarbons, such as vacuum gas oil, used for hydrocracking to produce various fuels. The layered catalyst system of...
|
|
|
5066628 |
Catalyst and process for high selectivity reforming with PT/RE on BA-K-L zeolite
This invention comprises a reforming catalyst and process with an unsulfided catalyst comprising Zeolite L, in which the cationic sites have been exchanged to contain potassium or barium or both; a...
|
|
|
5057472 |
Process for the dealumination and ion exchange of zeolites
The instant invention comprises a process for concurrently dealuminating and ion exchanging an acid stable sodium ion-containing zeolite by contacting the zeolite with an about 0.5M to about 3M...
|
|
|
5057474 |
Preparation and use of metal-containing zeolitic catalysts
Metal-containing zeolitic catalysts, for use in hydrocarbon conversion processes, are prepared by a process which comprises exposing a zeolitic base material, optionally after introduction of metal...
|
|
|
5052561 |
Crystalline silicate catalyst and a reforming process using the catalyst
The preferred reforming catalyst has a high silica to alumina molar ratio and a small crystallite size. The reforming process using the catalyst is preferably run without added hydrogen, and at low...
|
|
|
5051384 |
Method for pretreating a reforming catalyst
Supported Group VIII noble metal reforming catalysts are pretreated with an unsaturated aliphatic hydrocarbon at elevated temperatures, thereby lower activity during initial reforming operation and...
|
|
|
5051392 |
Multifunctional catalyst for treating exhaust fumes from internal combustion engines, containing uranium, at least one uranium promotor and at least one precious metal, and its preparation
A multifunctional catalyst, a method of preparing the catalyst and the use of the catalyst in treating exhaust fumes from internal combustion engines are described. The catalyst includes a porous...
|
|
|
5041401 |
Thermally stable noble metal-containing 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...
|
|
|
5034362 |
Zeolitic catalyst composition of improved shape selectivity
There are provided aromatic conversion reactions for preparation of dialkylbenzenes, such as xylene and ethyltoluene, of enhanced para isomer content with a zeolitic catalyst composition of...
|
|
|
5032561 |
Catalyst composition for cracking non-aromatic hydrocarbons and isomerizing C8-aromatic hydrocarbons
A catalyst composition consisting essentially of (a) a crystalline aluminosilicate zeolite having a silica/alumina mole ratio of at least 10 (component A) in which at least 50% of its cationic...
|
|
|
5023221 |
Middle distillate hydrocracking catalyst and process
A midbarrel hydrocracking catalyst for use in producing middle distillate products from hydrocarbon feedstocks via hydrocracking comprises at least one hydrogenation component, preferably one...
|
|
|
5017541 |
Catalyst for the isomerization of alkanes
An improved catalyst particle is disclosed for the conversion of hydrocarbons which comprises a refractory inorganic-oxide support, a Friedel-Crafts metal halide, and a surface-layer platinum-group...
|
|
|
5013537 |
Process for the synthesis of zeolites of the ferrisilicate type, products so obtained
The invention relates to a novel process for the synthesis of zeolites of the ferrisilicate type called ferrizeosilites, to the products obtained by this process as well as their uses....
|
|
|
5011805 |
Dehydrogenation, dehydrocyclization and reforming catalyst
The invention relates to catalytic treatment of paraffin feeds to alter the hydrogen content of the feed, for example, by producing effluents the aromatic content of which exceeds that of the feed...
|
|
|
5008234 |
Process for the preparation of catalytic metal clusters
Compositions of matter useful as catalysts in heterogeneous reactions and comprising metal atom clusters supported on inorganic supports such as silica, alumina or zeolites are prepared by...
|
|
|
5006496 |
Process for the preparation of zeolitic catalysts
Process for the preparation of a zeolitic catalyst which comprises treating a zeolite of the Y-type having an alkali oxide/aluminum oxide molar ratio of at most 0.13 with a solution of a...
|
|
|
4992401 |
Noble metal alkaline zeolites for catalytic reforming
Disclosed is a process for preparing noble metal-containing zeolites suitable for use in catalytic reforming which process comprises: (a) treating an alkaline faujasites or L-type zeolites with...
|
|
|
4992402 |
Noble metal acidic zeolites for isomerization
Disclosed is a method for preparing noble-metal containing zeolite materials suitable for isomerization reactions. The catalysts are prepared by contacting an zeolite selected from the acidic...
|
|
|
4990243 |
Process for hydrodenitrogenating hydrocarbon oils
This invention provides a layered catalyst system for hydro-denitrification of hydrocarbons, such as vacuum gas oil, used for hydrocracking to produce various fuels. The layered catalyst system of...
|
|
|
4983274 |
Shape selective crystalline silicate zeolite containing intermetallic component and use as catalyst in hydrocarbon conversions
The catalytic properties of a metal-containing shape selective crystalline silicate zeolite are significantly improved by converting said metal to an intermetallic compound. Thus, for example,...
|
|
|
4977121 |
Mordenite-containing catalyst, its preparation and use for isomerizing cuts of high normal paraffin content
The invention concerns a catalyst containing by weight: (a) from 10 to 99.99% of a mordenite being in major part shaped as needles and having a Si/Al atomic ratio of about 5 to 50, a benzene...
|
|
|
4975400 |
Catalyst for hydrotreating solvent for coal liquefaction
A new catalyst, which is Ni-Mo metal loaded on zeolite-alumina carrier, provides efficient hydrotreatment of solvent for coal liquefaction and cracking of high boiling fractions, especially high...
|
|
|
4973461 |
Crystalline zeolite composition
A synthetic crystalline zeolite is provided characterized by having a composition, in terms of mole ratios of oxides, in the range: 0.9 to 1.1 M 2 /n O:Al 2 O 3 :2.5 to 5.1 SiO 2 :xH 2 O...
|
|
|
4963520 |
Metal-containing spinel composition and process of using same
A composition of matter comprising at least one metal-containing spinel which includes a first metal and a second metal having a valence higher than the valence of the first metal, a minor amount...
|
|
|
4957892 |
Process for combusting solid sulfur containing material
An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major...
|
|
|
4952543 |
Process for dispersing or redispersing a Group VIII noble metal species on a porous inorganic support
A process for dispersing or dispersing relatively large crystallites of an agglomerated Group VIII noble metal species present on a porous inorganic support is disclosed. The process includes...
|
|
|
4950383 |
Process for upgrading shale oil
A process for hydrocracking a hydrocracking feedstock with hydrogen at hydrocracking conversion conditions which comprises contacting the feedstock with a first catalyst comprising a nickel...
|
|
|
4943546 |
Normal paraffin isomerization catalyst comprising a mordenite and titanium
A catalyst comprising by weight: (a) 10-99.98% of a mordenite, in major part as needles, having a Si/Al atomic ratio of from 5:1 to 100:1, a sodium content lower than 0.2% by weight of the dry...
|
|
|
4939110 |
Catalyst for the isomerization of aromatics
An improved catalyst is disclosed for the conversion of aromatic hydrocarbons which comprise a Group VIII metal, lead, a pentasil zeolite, and an inorganic oxide binder, wherein 80-100% of the...
|
|
|
4933487 |
Preparation of 4-pentenates
In an improved process for preparing 4-pentenates by isomerization, where isomeric pentenates are treated at elevated temperatures with zeolites and 4-pentenates are distilled out of the reaction...
|
|
|
4931416 |
Thallium or lead-containing microporous crystalline materials and their use as dehydrogenation dehydrocyclization and reforming catalysts
Crystalline microporous thallium or lead containing silicate isostructural with zeolites, as catalysts, exhibit high selectivity for dehydrogenation, dehydrocyclization, and reforming.
|
|
|
4925820 |
Hydrocarbon conversion process and catalysts
A process for converting hydrocarbon oils into products of low average molecular weight and lower average boiling point comprising contacting a hydrocarbon oil at elevated temperature and pressure...
|
|
|
4923592 |
Nickel-containing hydrocracking catalyst and process
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...
|
|
|
4923835 |
Catalyst of aluminosilicate type containing at least one noble metal and its use for isomerizing a C8 aromatic cut
Catalyst of aluminosilicate type for isomerization of a C 8 aromatic cut, characterized by the following composition, expressed by weight: (a) 0.01 to 1.5% of at least one metal selected from...
|
|
|
4918036 |
Cracking catalyst/sulfur oxide gettering agent compositions
Sulfur oxide gettering agents which comprise a metal sulfate, such as magnesium sulfate, are described. These getterin agents are used to reduce sulfur oxide emissions from a variety of processes...
|
|
|
4916096 |
Hydrocarbon conversion catalysts
Composition of matter suitable as a catalyst (base) in hydroprocessing comprising a crystalline aluminosilicate zeolite and a binder wherein the crystalline aluminosilicate comprises a modified Y...
|
|
|
4914068 |
Process for the dispersion of Group VIII metals in large pore zeolite catalysts
This invention relates to methods for dispersing Group-VIII and other metals containing zeolites, particularly large pore zeolites.
|
|
|
4912072 |
Method for selective internal platinization of porous aluminosilicates
The present invention involves processes for producing zeolite catalyst with an exclusively internal surface platinum coating. In one embodiment, the process of the present invention comprises...
|
|
|
4909924 |
Decationized, dealuminated and stabilized L zeolite and use thereof
The present invention concerns a new decationized, dealuminated and stabilized zeolite of L type, characterized particularly by: a total SiO 2 /Al 2 O 3 molar ratio of at least 8, a...
|
|
|
4906599 |
Surface silylated zeolite catalysts, and processes for the preparation, and use of said catalysts in the production of high octane gasoline
A novel zeolite hydrocracking catalyst which contains NH 4 + sites, at ambient temperatures, and surface sites constituted of a chemisorbed silica-containing species, and process for producing...
|
|
|
4882307 |
Process for preparing noble metal-containing zeolites
A process for preparing noble metal-containing zeolites having high noble metal dispersion comprises (a) contacting a zeolite material with a cationic noble metal complex; (b) calcining the...
|
|
|
4874733 |
Cobalt Fischer-Tropsch catalysts having improved selectivity
A cobalt Fischer-Tropsch catalyst having an improved steam treated, acid extracted LZ-210 support is taught. The new catalyst system demonstrates improved product selectivity at Fischer-Tropsch...
|
|
|
4874730 |
Process for the preparation of modified zeolites
Process for the preparation of a modified zeolite of the Y-type by treatment with a solution of a metal salt and a calcination which comprises treating a zeolite of the Y-type having an alkali...
|
|
|
4861740 |
Magnesium-exchanged zeolitic catalyst for isomerization of alkylaromatics
An isomerization catalyst is prepared by a novel method of incorporating magnesium into a crystalline aluminosilicate. The catalyst comprises an alumina matrix, a magnesium-containing zeolite, and...
|
|
|
4857495 |
Hydrocracking catalysts and processes employing silicoaluminophosphate molecular sieves
Hydrocracking processes are disclosed using catalysts comprising silicoaluminophosphates of U.S. Pat. No. 4,440,871 characterized in the calcined form by an adsorption of oxygen of at least 4...
|
|
|
4853203 |
Ferrierites; their process of manufacture
New ferrierites are disclosed as well as their process of manufacture. According to the invention, these new ferrierites are characterized by: (a) The following approximate formula: M x /n...
|
|
|
4845064 |
Catalysts for the preparation alkyl halides
Catalysts for the preparation of alkyl halides produced by reacting (1) transition metal carbonyl complex capable of oxidatively adding H 2 or HCl and (2) a Lewis acid from the group consisting of...
|
|
|
4842720 |
Fischer-Tropsch synthesis process utilizing a catalyst containing a siliceous metal-containing crystalline composition
A novel siliceous crystalline composition of matter further comprising one or more metals is prepared by admixing a basic silica salt and a dissolved metal salt in the presence of a quaternary...
|