Matches 301 - 350 out of 519 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
4609636 Pd/Re hydrogenation catalyst for making tetrahydrofuran and 1,4-butanediol  
Palladium/rhenium-on-carbon catalyst; a method employing said catalyst to produce tetrahydrofuran, 1,4-butanediol or mixtures thereof in selectable ratios from a number of starting reactants; and a...
4607021 Activation of fly ash  
Fly ash is activated by heating a screened magnetic fraction of the ash in a steam atmosphere and then reducing, oxidizing and again reducing the hydrothermally treated fraction. The activated fly...
4598058 Molded catalyst materials containing reduced cobalt and/or nickel particles  
Molded catalyst materials contain metallic cobalt and/or nickel particles and a lubricant, the said particles being obtained by reduction of cobalt oxide and/or nickel oxide particles containing...
4591334 Fluidization aid  
Tendrillar carbonaceous material is used as a fluidization aid for fluidized beds. The tendrillar carbonaceous material can be used to fluidize cohesive solids. Further, it can be used to improve...
4591578 Catalyst of molybdenum on wide-pore carbon support  
New catalysts comprising molybdenum on supports of defined wide-pore carbons are useful as catalyst for reaction of CO with H 2 for synthesis of hydrocarbons. Catalysts may be made by depositing...
4587228 Molded iron catalyst material and its preparation  
A molded iron catalyst material which has an indentation hardness of from 850 to 1500 kp/cm 2 and contains metallic iron particles, obtained from iron oxide particles by contact with hydrogen at...
4583299 Fluidization aid for cohesive materials  
Tendrillar carbonaceous material is used as a fluidization aid for fluidizing cohesive materials in fluidized beds. The tendrillar carbonaceous material can be a fibrous, particulate carbonaceous...
4569924 Metal carbon catalyst preparation  
Carbon-metal catalysts having a substantial amount of catalytically active metal, e.g. silver, deposited thereon in zero-valent, small cluster form, are prepared by vaporizing the metal under low...
4563371 Process for preparing metallized porous solid bodies  
The metallization of porous solid bodies, such as, for example, ion exchange materials, by loading the surfaces of the metal-free substrates with transition metal ions and subsequently treating...
4554374 Process for dicarbonylation of simple olefins  
This invention relates to the carbonylation of olefins. More particularly it involves the carbonylation of aliphatic 1-olefins such as propylene and 1-octene to form for example, dimethyl...
4552976 Process for oxidative dicarbonylation of butadiene  
This invention relates to the carbonylation of olefins. More particularly it involves the carbonylation of aliphatic conjugated diolefins such as 1,3-butadiene to form adipic acid precursors such...
4540835 Preparation of 2-trifluoromethylpropanol by vapor phase hydrogenation of 2-trifluoromethylpropanal  
A process of preparing 2-trifluoromethylpropanol by vapor phase contact reaction between 2-trifluoromethylpropanal trimer and hydrogen in the presence of a catalyst of which the principal component...
4532227 Low ash pelleted carbon and process of preparation  
Low ash pelleted carbon is prepared by contacting pelleted carbon first with hydrochloric acid followed by leaching with hydrofluoric acid.
4522931 Method for the preparation of supported catalysts and supported catalysts thus obtained  
A method for the preparation of catalysts, particularly suitable for the hydrogenation of organic compounds, according to which method a catalytic element, preferably selected from the VIII Group...
4523029 Oxidative carbonylation of alcohols to produce dialkyl oxalates  
A process for the preparation of dialkyl oxalates by the oxidative carbonylation of alcohols which comprises reacting a mixture of carbon monoxide and oxygen with an alcohol in the presence of a...
4521527 Molded iron catalyst and its preparation  
Molded iron catalysts which contain metallic iron particles, obtained from anisometric iron oxide particles by contact with hydrogen at ≤500° C., and a lubricant, are prepared.
4520124 Method for producing a catalytic structure for the reduction of nitrogen oxides  
A method is provided for producing a catalytic structure in the form of sheet or honeycomb for the gas phase reduction of nitrogen oxides. The method comprises: beating an inorganic fiber in water...
4518488 Metal-containing active carbon and methods for making and using same  
A high surface area, porous active carbon matrix containing a substantially uniform dispersion of a metal or metal-containing material and methods for making and using the same are disclosed.
4513096 Synthesis gas reaction iron containing active carbon catalysts  
A method of reacting carbon monoxide and hydrogen to form light hydrocarbons and alcohols in a slurry phase and in the presence of iron-containing active carbon catalyst is disclosed.
4513094 Single-batch process to prepare noble metal vanadium alloy catalyst on a carbon based support  
A novel single-batch method for preparing carbon supported alloy catalysts, wherein one of the metals is a noble metal, preferably platinum and the other metals selected from the transition Groups...
4507494 Process for the production of a diester of oxalic acid  
In a process for preparing a diester of oxalic acid by the vapor phase catalytic reaction of carbon monoxide with an ester of nitrous acid in the presence of a catalyst composed of a solid carrier...
4495306 Preparation of catalysts by the precipitation of a hydroxide or sulfide from an emulsion in the presence of carbonaceous solid  
A process for the preparation of hydrogenation catalysts by contacting a carbonaceous material with a water in oil emulsion containing a salt of a hydrogenating metal, converting said salt to a...
4482641 Metal-containing active carbon and method for making same  
A high surface area, porous active carbon matrix containing a substantially uniform dispersion of a metal or metal-containing material and a method for making the same are disclosed.
4478954 Synthesis gas reaction  
A method of reacting carbon monoxide and hydrogen to form light hydrocarbons and alcohols in a slurry phase and in the presence of iron-containing active carbon catalyst is disclosed.
4476242 Process for preparing palladium on carbon catalysts for purification of crude terephthalic acid  
A catalyst, a process for preparing said catalyst, and a process for producing purified terephthalic acid, wherein 4-carboxybenzaldehyde is reduced to very low levels, wherein said catalyst is...
4473705 Process for producing oxalate diester  
A process for producing an oxalate diester is provided. The oxalate diester is produced by reacting an aliphatic alcohol, carbon monoxide and molecular oxygen at an elevated temperature and under...
4472513 Laser-synthesized catalysts  
A solid catalyst material is evaporated from a coating on a transparent solid substrate and is condensed onto a solid polymeric organic catalyst carrier or into a liquid, by passing a laser beam...
4468523 Synthesis of dialkyl oxalates by the heterogeneously catalyzed oxidative carbonylation of alcohols  
Synthesis of dialkyl oxalates by the oxidative carbonylation of liquid monohydric saturated alcohols of from 1 to 20 carbon atoms with carbon monoxide and oxygen or an oxygen-containing gas in the...
4467111 Process for purification of crude terephthalic acid  
A catalyst and process for purifying crude terephthalic acid wherein the catalyst is prepared by contacting a carbonaceous support with an aqueous solution of sodium tetranitropalladate.
4465787 Ruthenium-on-charcoal and ruthenium-on-carbon black hydrogenation catalysts, their preparation and their use for selective hydrogenation of unsaturated carbonyl compounds  
Ruthenium-on-charcoal and ruthenium-on-carbon black catalysts, containing from 0.1 to 5% by weight of iron, for the preparation of olefinically unsaturated alcohols by selective hydrogenation of...
4464479 Method for treating red mud  
In order to improve the handling capability of red mud, it is mixed with fine-grain coal material such as brown coal or lignite in dust form, in a ratio by weight of between 0.5-10:1. The liquid...
4457823 Thermally stabilized reduced platinum oxide electrocatalyst  
A novel, electrocatalytic material comprising at least one reduced platinum group metal oxide is subsequently heated in the presence of oxygen at a temperature high enough to stabilize the catalyst...
4454333 Palladium catalyzed carbonylation of conjugated dienes with catalyst recycle  
Esters of β,γ-unsaturated carboxylic acids are prepared by (i) carbonylating a conjugated diene with carbon monoxide in the presence of an alcohol, a halogenated hydracid and a palladium...
4454246 Highly dispersed supported group VIII noble metal phosphorus compounds  
The instant invention relates to novel compositions comprising highly dispersed Group VIII noble metal phosphide crystallites supported on a high surface area solid support selected from the group...
4450244 Catalyst for the combustion of harmful substances contained in exhaust gases of internal combustion engines operated with alcohol and process for the production of the catalyst  
A catalyst is disclosed for combustion of pollutants contained in the exhaust gases of internal combustion engines operated with alcohol. The catalyst consists of a metal carrier, a coating...
4447665 Dehydrogenation reactions  
A method is disclosed for dehydrogenating a parafinic or naphthenic compound and for dehydrocyclizing a paraffinic compound comprising a straight chain of at least 5 carbon atoms, comprising:...
4437926 Metal alloy with high catalytic activity  
Metal alloy having high catalytic activity. It comprises a refractory base metal mass containing carbon and at least one metal of the platinum type, the surface of which has been subjected to...
4438216 Process for improved activated carbon having an aluminum-heavy metal spinel  
A method of producing an activated carbon having an aluminum-heavy metal spinel features the use of at least twice the stoichiometric amount of aluminum with respect to heavy metal in the preparation.
4430253 Sulfide-modified ruthenium catalyst  
A process for the production of a lower polyhydric alcohol or a mixture thereof by the hydrogenation and hydrolysis of a carbohydrate. The first stage hydrogenation produces higher polyhydric...
4423023 Process for the production of hydrocyanic acid from carbon monoxide and ammonia  
A process for producing HCN by contacting CO and NH 3 with a catalyst comprising a porous catalyst support, a Group VIII metal which is at least one of Fe, Ni, Co and Ru, and carbon, wherein the...
4421676 Process for preparation of palladium on carbon catalysts used in the purification of crude terephthalic acid  
A catalyst and process for purifying crude terephthalic acid wherein the catalyst is prepared by contacting a carbonaceous support with an aqueous solution of sodium tetranitropalladate.
4416800 Method for producing a catalyst and a carrier therefor including heat-resistant fibers  
A method is provided for producing a catalyst and a carrier therefor in the form of sheet or honeycomb. The method comprises: beating a heat-resistant fiber such as asbesto fiber in water to form a...
4415479 Palladium on carbon catalyst for purification of crude terephthalic acid  
A catalyst and process for purifying crude terephthalic acid wherein the catalyst comprises palladium metal crystallites deposited upon a carbon support wherein the catalyst is prepared by...
4414256 Chemically wetted film of metal phase on graphite and process for preparing same  
A composition of matter and method for the preparation thereof wherein said composition comprises a film of chemically wetted metal phase essentially a monolayer thick on graphite wherein said...
4409129 Method of manufacturing catalyst  
Disclosed is a method of manufacturing a catalyst composed of fine metal particles having a large specific surface area, such as a platinum black catalyst. According to this method, a solution...
4394299 Palladium-rhodium catalyst for purification of crude terephthalic acid  
A process for producing a purified terephthalic acid which comprises reacting in a liquid phase a mixture of hydrogen and crude terephthalic acid, a palladium/rhodium catalyst on a porous...
4379778 Hydrogen peroxide synthesis  
This invention relates to improvements in palladium-carbon catalysts for the production of hydrogen peroxide from a mixture of hydrogen and oxygen in the presence of an aqueous liquid capable of...
4364422 Method of producing a nickel electrode  
A method of producing a nickel electrode comprising a current collector and active material pressed into physical and electrical contact with the current collector. The active material comprises...
4362646 Process for the production of fibrous activated carbon  
A fibrous activated carbon having high adsorptivity and excellent mechanical properties is produced by preoxidizing an acrylonitrile-based fiber containing a specific amount of an iron compound at...
4348303 Catalyst for hydrazine decomposition  
A catalyst is provided for decomposing hydrazine base monopropellants and providing multiple hydrazine-ignition restarts. The catalyst comprises a carrier material selected from the group...
Matches 301 - 350 out of 519 < 1 2 3 4 5 6 7 8 9 10 11 >