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7576028 |
Catalyst body
A catalyst body comprising a carrier and a catalyst layer containing an alkali metal and/or an alkaline earth metal, loaded on the carrier, which catalyst further contains a substance capable of...
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7553794 |
Heteropolyacid and or its salt supported catalyst, production process of the catalyst and production process of compound using the catalyst
A supported catalyst comprising a support having supported thereon at least one member selected from the group consisting of heteropolyacids and heteropolyacid salts, in which the heteropolyacid...
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7547655 |
V-P-Si composite oxide catalyst precursor used for producing maleic anhydride from butance
The present invention provides a catalyst precursor for producing maleic anhydride by oxidizing butane. Said catalyst precursor is prepared by a process comprising partially reducing V +5 to V +4 ...
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7514476 |
Stable concentrated metal colloids and methods of making same
Metal-containing colloids are manufactured by reacting a plurality of metal ions and a plurality of organic agent molecules to form metal complexes in a mixture having a pH greater than about 4.25....
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7485597 |
Method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin
A method for improving the selectivity of a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m 2 surface area of the support, which method...
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7485596 |
Process for synthesizing a heteropoly acid catalyst for oxidation of unsaturated aldehydes to unsaturated carboxylic acid
The present invention is for a process for making a heteropoly acid compound catalyst for oxidation of unsaturated aldehydes, such as methacrolein, to unsaturated carboxylic acids, such as...
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7446075 |
Transition metal phosphides and hydrotreating process using the same
A catalyst for hydrotreating a hydrocarbon feed has been developed. The catalyst comprises a metal phosphide and promoter metal component as the catalytic component. At least a portion of the metal...
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7442816 |
Antimony vanadium phosphate
A new composition, SbVPO 6+δ , in which 0≦δ≦ 1.5, has been prepared. Crystals of the compound have been grown by several methods, and the crystal structure has been determined. It is related...
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7358209 |
Polymerisation catalysts
A transition metal complex having the following Formula (A): wherein the monovalent groups R 1 and R 2 are —R a , —OR b , —NR c R d , and —NHR e : the monovalent groups R a , R b , R c ,...
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7339021 |
Method for preparing polycarbonate resin
The present invention relates to a method for preparing polycarbonate resin, and more particularly to a method for effectively preparing polycarbonate resin having a large molecular weight in a...
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7265075 |
Hydro-refining catalyst, carrier for use therein and method for production thereof
A method for producing a hydrorefining catalyst of the present invention has a step of preparing an aluminum solution containing phosphorus in a molar ratio of 0.001 to 0.05 with respect to...
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7235508 |
Metal-incorporated nanoporous nickel phosphate molecular sieve and its preparation method
The present invention relates to a composition of metal-incorporated VSB-5 molecular sieve with nanopores and its preparation method, in particular, to a composition of a metal-incorporated VSB-5...
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7223714 |
Method of transferring catalyst in a reaction system
The invention is directed to methods of transfering catalyst particles into and within reaction systems. The reaction systems are those that use catalysts that comprise molecular sieves,...
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7157403 |
Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof
A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four...
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7094727 |
Heteropolyacid catalyst and method for producing the same
Provided is a novel heteropolyacid catalyst useful for partial oxidation of methacrolein (MACR) to methacrylic acid (MAA), as represented by the following formula 1:
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7060649 |
Method for the production of a catalyst containing vanadium, phosphorus, and oxygen
Disclosed is a method for producing a catalyst containing vanadium, phosphorus, and oxygen, which is used for oxidizing the gas phase of a hydrocarbon having at least four carbon atoms to maleic...
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7053022 |
Hydrothermally synthesized MO-V-M-NB-X oxide catalysts for the selective oxidation of hydrocarbons
Hydrothermally synthesized catalysts comprising a mixed metal oxide are utilized to produce unsaturated carboxylic acids by the vapor phase oxidation of an alkane, or a mixture of an alkane and an...
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7045482 |
Method for preparing a heteropolyacid catalyst from basic solvent treatments and method for preparing methacrylic acid using thererof
The present invention relates to a method for preparing a heteropolyacid catalyst and method for preparing methacrylic acid using thereof. More particularly, the present invention relates to a...
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RE39074 |
Process for the selective preparation of acetic acid using a molybdenum and palladium based catalytic oxide
The present invention relates to a process for the selective preparation of acetic acid from a gaseous feed comprising ethane, ethylene or mixtures thereof plus oxygen at elevated temperature,...
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7015173 |
High temperature mixing
A catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase...
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6956004 |
Vanadium/phosphorus mixed oxide catalyst
Active vanadium/phosphorus mixed oxide catalyst for the conversion of non-aromatic hydrocarbons, e.g., n-butane, into maleic anhydride. The catalyst is prepared from the catalyst precursor, that...
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6919472 |
Catalyst compositions for the selective conversion of alkanes to unsaturated carboxylic acids, methods of making and methods of using thereof
A catalyst composition for the selective conversion of an alkane to an unsaturated carboxylic acid having the general formula:
MoV a Nb b...
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6903047 |
Vanadium-phosphorus oxide catalysts with promoter reagents
The present invention concerns a method for enhancing the activity of vanadium phosphorus oxide (VPO) catalysts. Promoter reagents are grafted onto or reacted with the catalyst surface. An optional...
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6878668 |
Process for manufacture of an attrition resistant catalyst
A method for manufacturing of an attrition resistant vanadium/phosphorous oxide catalyst involving forming an aqueous slurry comprising; vanadium/phosphorous oxide catalyst or vanadium/phosphorous...
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6867163 |
Method for producing precipitate and catalyst
A molybdenum-based precipitate is prepared according to a process including the first step of forming a crude precipitate by pH adjustment to 6.5 or less in the presence of an alkali metal...
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6858561 |
Phosphorus/vanadium catalyst preparation
A process for preparing a catalyst for maleic anhydride production wherein a +5 vanadium compound such as V 2 O 5 , an anhydrous phosphoric acid, and optionally promoters are admixed in an organic...
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6815392 |
Catalyst of a metal heteropoly acid salt that is insoluble in a polar solvent on a non-metallic porous support and method of making
The present invention includes a catalyst having (a) a non-metallic support having a plurality of pores; (b) a metal heteropoly acid salt that is insoluble in a polar solvent on the non-metallic...
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6812351 |
Hollow cylindrical catalyst and a method for producing a maleic acid anhydride
A catalyst used in a process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms by means of oxygen-containing gases...
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6812188 |
Catalyst for methacrylic acid production, coated catalyst, and process for producing the same
The present invention relates to a catalyst for producing methacrylic acid by the vapor-phase catalytic oxidation of methacrolein, comprising Mo, V, P and Cu as the indispensable active components,...
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6777369 |
Process for producing catalyst
The present invention relates to the effective utilization of a used catalyst containing at least molybdenum, an A element (at least one element selected from the group consisting of phosphorus and...
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6774081 |
Process for preparing vanadyl pyrophosphate catalyst
The present invention relates to a process for preparing vanadyl pyrophosphate catalyst with improved structural characteristics for the selective oxidation of butane to maleic anhydride.
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6762146 |
Vanadium phosphorous mixed oxide
A novel intercalation compound is provided, in which compound monohydric alcohol is intercalated between layers of a layered compound comprising vanadium, phosphorus and oxygen as primary...
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6747172 |
Method for preparing methacrylic acid
A method for preparing methacrylic acid at high selectivities and high yields by catalytically vapor phase oxidizing isobutane is provided. In the method, a catalyst comprising (i) a sparingly...
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6710009 |
Catalysts for producing methylamines and method for manufacturing the same
Catalysts useful for producing methylamines and having practical catalyst life and large selectivity for dimethylamine comprise crystalline silicoaluminophosphate molecular sieves which have a...
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6696388 |
Gel catalysts and process for preparing thereof
A gel composition substantially contained within the pores of a solid material for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes.
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6660681 |
Vanadium phosphorus oxide catalyst having a thermally conductive support
A catalyst comprising vanadium phosphorus oxide combined with a thermally conductive material is particularly useful for the selective hydrocarbon oxidations (e.g., butane to maleic anhydride) and...
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6652823 |
Process for the synthesis of VPO catalysts
Process for the preparation of a vanadium phosphate catalyst comprising treatment of a vanadium compound with formic acid, water and a phosphorus compound.
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6624326 |
Method for preparing heteropolyacid catalyst and method for producing methacrylic acid
A novel method for preparing a heteropolyacid catalyst containing a heteropolyacid composed of molybdophosphoric acid and/or molybdovanadophosphoric acid, or a salt of the heteropolyacid, is...
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6586361 |
Multilayered shell catalysts for catalytic gaseous phase oxidation of aromatic hydrocarbons
A coated catalyst for the catalytic gas-phase oxidation of aromatic hydrocarbons comprises, on an inert nonporous support, a catalytically active composition comprising a defined amount of vanadium...
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6562752 |
Metallic sulphide catalysts, processes for synthesising said catalysts and use thereof
A catalyst containing a sulfide phase comprising (a) sulfur (b) and at least one element A selected form group IIIB, including the lanthanides and actinides, group IVB and group VB, and optionally...
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6544439 |
Low coke formation catalysts and process for reforming and synthesis gas production
Applicants have developed a novel catalyst composition comprising a crystalline metal oxide having the empirical formula: A v B t+ w Ni x D(G u− ) y O z , where A is an alkali metal (e.g. Na), B...
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6521562 |
Preparation of molecular sieve catalysts micro-filtration
A method of making a molecular sieve catalyst by preparing a catalyst slurry containing molecular sieve, binder and a matrix material and directing the slurry to a forming unit. The catalyst slurry...
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6495486 |
Intercalation compound and a vanadium phosphorus mixed oxide and a process for the preparation thereof
A novel intercalation compound is provided, in which compound monohydric alcohol is intercalated between layers of a layered compound comprising vanadium, phosphorus and oxygen as primary...
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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...
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6476259 |
Catalysts for methacrylic acid production and process for producing methacrylic acid
Improved catalyst for use in production of methacrylic acid by vapor phase oxidation reaction and/or vapor phase oxidative dehydrogenation reaction of at least one compound selected from...
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6471923 |
Process for adsorbing and desording oxides of nitrogen
The invention concerns materials for adsorbing and desorbing oxides of nitrogen NO and NO 2 present in exhaust gases, in particular from the internal combustion engines of automotive vehicles...
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6458970 |
Method for producing acid phthalic anhydride and an appropriate shell catalyst containing titanium-vanadium-cesium
In a process for preparing phthalic anhydride by catalytic gas-phase oxidation of o-xylene or naphthalene or o-xylene/naphthalene mixtures with a gas comprising molecular oxygen over a coated...
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6447741 |
Thermally stable, high surface area, modified mesoporous aluminophosphate material
A mesoporous aluminophosphate material includes a solid aluminophosphate composition modified with at least one element selected from zirconium, cerium, lanthanum, manganese, cobalt, zinc, and...
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6432867 |
Process for sulfurizing catalysts in a reducing medium
Sulfided catalysts produced by sulfurizing supported catalysts containing at least one element selected from group IIIB, including the lanthanides and actinides, group IVB and group VB, wherein the...
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6417376 |
Selective oxidation process and catalyst therefor
A process for selectively oxidizing an organic molecule by reacting said organic molecule and oxygen in the presence of a selective oxidation catalyst supported on a mesh-like structure.
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