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7208446 Quasi-crystalline boehmites containing additives  
The present invention pertains to a quasi-crystalline boehmite containing additive in a homogeneously dispersed state. Suitable additives are compounds containing elements selected from the group...
6723869 Method for producing acrylonitrile, catalyst for use therein and method for preparing the same  
For the production of acrylonitrile by ammoxidation of propylene, there is provided a catalyst capable of giving a high yield for a long period of time. In producing acrylonitrile by ammoxidation...
6610629 Process for producing an oxide catalyst for oxidation or ammoxidation  
Disclosed is a process for producing an oxide catalyst comprising, as component elements, molybdenum (Mo), vanadium (V), at least one element selected from the group consisting of the two elements...
6479691 Catalyst for producing unsaturated nitrile  
A catalyst composition represented by the following empirical formula which is useful in production of unsaturated nitrites by ammoxidation: Mo 10 Bi a Fe b Sb c Ni d Cr e F f G g H h K k X x Y y...
6399818 Process for producing unsaturated aldehydes and unsaturated carboxylic acids  
As an improvement in the process for preparing unsaturated aldehydes and unsaturated carboxylic acids through vapor-phase catalytic oxidation of at least one starting compound selected from...
6149799 Catalyst compromising a mixed sulphide and its use for hydrorefining and hydroconverting hydrocarbons  
The invention concerns a catalyst for hydrorefining and hydroconverting hydrocarbon feeds, comprising a mixed sulphide comprising at least two elements selected from elements with an atomic number...
6083868 Method of producing heat-resistant catalyst support  
A high heat-resistant catalyst support comprises an amorphous composite oxide which is constituted by: (i) an NOx storage component comprising an oxide of at least one element selected from the...
5583086 Cesium containing multimetal oxide catalyst compositions for the preparation of methacrolein by gas-phase-catalytic oxidation  
Cesium based multimetal oxide compositions which are suitable as catalysts for the gas-phase-catalytic oxidative preparation of methacrolein from isobutene or tert-butanol or its methyl ether. The...
5532199 Carrier-supported catalyst for the synthesis of unsaturated aldehydes and unsaturated carboxylic acids and process for preparing the same  
A carrier-supported catalyst for the synthesis of unsaturated aldehydes and unsaturated carboxylic acids, comprising a catalyst active substance comprising at least molybdenum and bismuth as its...
5491258 Molded catalyst or supported catalyst for synthesizing methacrolein and methacrylic acid, a process for production thereof, and a process of use thereof  
For providing a molded catalyst or a supported catalyst which has an excellent mechanical strength and is intended for producing methacrolein and methacrylic acid from isobutylene or tertiary...
5438028 Method of enhancing finished catalysts  
A method of enhancing the activity of a catalyst for the hydroprocessing of hydrocarbons, comprising: (a) applying a modifying element dissolved in a solvent onto the surface of a finished...
5422326 Process for preparing a catalyst for producing methacrylic acid  
When a catalyst for producing methacrylic acid is prepared by shaping a catalyst component represented by the general formula P a Mo b V c X d Y e Z f O g wherein P, Mo, V, X, Y, Z, a, b, c,...
5413974 Aluminum-containing oxide and process for producing aluminum-containing oxide  
A substantially amorphous, aluminum-containing oxide having the composition Al 1 -x-y1-y2 Bi x M 1y1 O z (wherein x is defined by 0.0001≤x≤0.10, M 1 is at least one selected from Si, P, B,...
5364825 Multimetal oxide compositions and process of preparing same  
Multimetal oxide compositions of the formula I [X 1 a X 2 b O x ] p [X 3 c X 4 d X 5 e X 6 f X 7 g X 2 h O y ] q (I) where X 1 is bismuth, tellurium, antimony, tin and/or copper, ...
5324702 Catalytic oxidation and oxidative dehydrogenation using metal-compound-loaded, deboronated hams-1b crystalline borosilicate molecular sieve compositions  
Compositions comprising certain metal-containing materials distributed interactively on a deboronated HAMS-1B crystalline borosilicate molecular sieve which are useful for catalytically oxidizing...
5250485 Process for preparing catalysts used for production of methacrolein and methacrylic acid  
A process for preparing a catalyst used for production of methacrolein and methacrylic acid by vapor phase oxidation of isobutylene or tertiary butanol includes adding an organic high-molecular...
5223469 Fluidized-bed catalyst for preparing acrylonitrile  
The present invention relates to a fluidized-bed catalyst for propylene ammoxidation to produce acrylonitrile, which consists of silica support and a composite of the formula A a B b C c Ni d ...
5183793 Ammoxidation catalysts and methods for their preparation for use in the production of isophthalonitrile  
Catalysts having the general formula: V 1 Bi a Sb b Fe c X d Y c Z f O g wherein, X=Mo, Cu, W, Nb, Te, P, Sn, Ge, As Y=Co, Ni, Ce, La, Mn, Cr Z=Alkali, alkaline earth, B, Tl and, ...
5177048 Supplementary catalyst for ammoxidation catalysts  
A supplementary catalyst for long term maintaining the activity of the fluidized bed catalysts for ammoxidation of propylene to produce acrylonitrile. Particularly, the present invention provides a...
5166119 Preparation of catalysts for producing methacrolein and methacrylic acid  
A method for preparing a multicomponent catalyst including molybdenum, bismuth, iron and cesium or thallium for producing methacrolein and methacrylic acid by the gas-phase catalytic oxidation of...
5134105 Catalyst for propylene ammoxidation to acrylonitrile  
Olefins such as propylene and isobutylene are converted to the corresponding unsaturated nitriles, acrylonitrile, and methacrylonitrile, respectively, by reacting a mixture of the olefin, ammonia,...
5132269 Iron-antimony-molybdenum-containing oxide catalyst composition and process for preparing the same  
An iron-antimony-molybdenum-containing oxide catalyst composition for oxidation reactions, comprising a crystalline iron antimonate having a crystallite size of 100 Å or more, said catalyst being...
5126307 Process for preparing catalyst for producing methacrylic acid and catalyst prepared by process  
A process for preparing a multi-component catalyst for producing methacrylic acid, containing phosphorus, molybdenum and vanadium, comprising mixing oxides of molybdenum and vanadium, water and...
5104844 Process of preparing catalysts for producing methacrylic acid  
A process for preparing a multi-component catalyst for producing methacrylic acid containing phosphorus, molybdenum and vanadium comprising using in preparing the catalyst, at least one number...
5102846 Process for preparing catalysts for producing methacrylic acid  
In a process for producing a catalyst having a composition represented by the following formula usable to produce methacrylic acid by the gas-phase catalytic oxidation of methacrolein with...
5079207 Catalyst for ammoxidation of paraffins  
Disclosed is a process for making an α, β-unsaturated monoitrile by the catalytic reaction of a paraffin containing 3-5 carbon atoms with molecular oxygen and ammonia by catalytic contact of the...
5071814 Process for producing molybdenum bismuth-containing metal oxide catalyst  
A process for producing a molybdenum bismuth-containing metal oxide catalyst comprising: mixing (I) a metal element-containing slurry which contains molybdenum and at least one metal element...
5059573 Process for producing molybdenum-containing metal oxide fluid-bed catalyst  
A process for producing a molybdenum-containing metal oxide fluid-bed catalyst comprising, as essential components, (i) at least one element selected from the group consisting of iron, bismuth,...
4921828 Antimony promoted bismuth cerium molybdate catalysts  
Antimony-promoted bismuth cerium molybdate catalysts are promoted with additional elements.
4873217 Catalyst for oxidation of olefin or tertiary alcohol and process for production thereof  
A catalyst used for producing, by catalytic gas phase oxidation of a C 3 -C 5 oelfin or tertiary alcohol, the corresponding unsaturated aldehyde and unsaturated carboxylic acid, said catalyst...
4855275 Catalyst performance improvement via separate boron addition  
A process for improving the performance of an ammoxidation catalyst comprising contacting said catalyst with a boron containing or heat decomposable boron compound to deposit boron on the catalyst.
4837360 Process for producing acrolein and acrylic acid  
Acrolein and acrylic acid are produced by vapor-phase catalytic oxidation of propylene in a multi-tubular, fixed-bed reaction vessel with the use of a composite oxide catalyst represented by the...
4816603 Process for the production of methacrolein and methacrylic acid  
The present invention provides a process for the production of methacrolein and methacrylic acid by the gas phase catalytic oxidation of isobutylene or t-butanol at high temperature using molecular...
4803190 Process for production of composite oxide catalysts  
In the production of a Mo-Bi-Na composite oxide catalyst by the process comprising incorporating compounds as respective element sources into a composite and subjecting the composite to heating...
4778930 Process for the oxidation of olefins using catalysts contaning antimony  
The present invention is a process for the oxidation of olefins to unsaturated aldehydes and acids using a catalyst containing antimony, iron, bismuth, molybdenum plus at least one of nickel,...
4732884 Process for producing composite oxide catalysts  
In the production of a Mo-Bi-Na composite oxide catalyst by the process comprising incorporating compounds as respective element sources into a composite and subjecting the composite to heat...
4724226 Boria-promoted HP catalyst  
A boria promoted hydrotreating catalyst is made having a microporous region with high surface area for desulfurization and preferably a macroporous region to transport large metal containing...
4711867 Catalytic composition  
A catalystic composition suitable for producing acrylonitrile from propylene, ammonia and oxygen (or oxygen-containing gas), which composition is represented by the following formula: (Mo) a (W)...
RE32484 Oxidation catalysts  
A vapor phase catalytic oxydehydrogenation process for the conversion of a steam of mixed isomeric isoamylenes, methyl butanols or mixtures thereof to isoprene with relatively short contact times...
4600541 Process for the preparation of acrylonitrile or methacrylonitrile  
In the preparation of acrylonitrile or methacrylonitrile by ammoxidation of propylene or isobutylene with ammonia and molecular oxygen in the vapor phase in the presence of a catalyst comprising...
4556731 Process for the oxidation of olefins using catalysts containing various promoter elements  
Iron-bismuth-molybdate catalysts further containing specific promoter elements have been found to exhibit excellent redox stability even under high stress conditions in the catalytic oxidation of...
4552978 Oxidation of unsaturated aldehydes  
A vapor phase catalytic process for making an unsaturated carboxylic acid from an olefinically unsaturated aldehyde, particularly acrylic acid from acrolein, by oxidation thereof with molecular...
4537874 Catalyst for production of unsaturated aldehydes  
A catalyst for the production of unsaturated aldehydes is provided which is represented by the general formula Bi a W b Fe c Mo d A e B f C g D h O x wherein Bi represents bismuth, W...
4530916 Catalyst for use in a methacrylic acid process  
A catalyst having heteropoly-acid structure and the general formula: Mo a V b P c Cu d As e X f O g wherein, X represents one or more elements selected from the group consisting of tin,...
4438217 Catalyst for oxidation of propylene  
A catalyst for the oxidation of propylene, said catalyst having the composition represented by the following formula Mo a W b Bi c Fe d A e B f C g D h O x wherein A represents at...
4424141 Process for producing an oxide complex catalyst containing molybdenum and one of bismuth and tellurium  
Bismuth molybdate catalysts formed from a precatalyst slurry which uses an organic liquid or mixture of an organic liquid and water as the liquid medium of the slurry exhibit superior catalytic...
4415482 Oxidation and ammoxidation catalyst  
Disclosed herein are catalysts useful for oxidation and ammoxidation of hydrocarbons. Such catalysts have the empirical formula BiMo a V b Sb c M d O x wherein a is 0.5-2, b is 0.01-0.12, c...
4405498 Oxidation and ammoxidation catalysts  
Disclosed herein are catalysts useful for oxidation and ammoxidation of hydrocarbons. Such catalysts have the empirical formula BiMo a V b Sb c M d O x wherein a is 0.5-2, b is 0.12-3, c is...
4354960 Process for the production of boron-containing nickel-aluminum oxide catalysts  
Process for the production of boron-containing nickel-aluminum oxide catalysts. Solutions containing nickel and aluminum are reacted with aqueous sodium borohydride. Precipitation occurs, followed...
4283307 Catalyst structure for the partial oxidation of n-butane to produce maleic anhydride  
Phosphorus-Vanadium oxidation catalyst prepared as tablets with a hole in the center produce higher yields of maleic anhydride from C 4 's, particularly n-butane than the same catalyst without the...
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