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JP3476227B2 |
PURPOSE: To produce methacrylamide of high quality from methacrylonitrile through a simplified process. CONSTITUTION: The production process comprises (A) the first step where methacrylonitrile is hydrated into methacrylamide, (B) the se...
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JP3466228B2 |
PURPOSE: To obtain the compd. of the subject with little residual carbonyl content by subjecting 3-hydroxypropionaldehyde in an aq. soln. to catalytic hydrogenation under specified conditions in the presence of a fixed-bed hydrogenation ...
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JP3460264B2 |
PURPOSE: To simply and efficiently obtain the subject composition for color photographic chemicals, etc., in a high purity without requiring troublesome operation such as substitution of solvent by subjecting the resultant o- aminophenol...
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JP2003530207A |
A method of producing a Raney type catalyst, the method comprising melting together a Raney metal and aluminium to form an alloy mixture, pouring the mixture through a nozzle, directing a gas jet on to the mixture to form a spray of drop...
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JP2003286257A |
To produce a method for producing a 3-aminopropyl derivative.The method for producing the 3-aminopropyl derivative represented by general formula (II) (wherein n is 1-4) comprises hydrogenating a 2-cyanoethyl derivative represented by ge...
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JP3450688B2 |
To provide a method for hydrogenating a sugar or a sugar mixture into a sugar alcohol or a sugar alcohol mixture. This method for hydrogenating a sugar or a sugar mixture into a sugar alcohol or a sugar alcohol mixture comprises hydrogen...
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JP3443583B2 |
PURPOSE: To isolate high-purity cis-2,6-dimethylpiperazine useful as a raw material for medicines and agrochemicals by suppressing formation of trans-2,6- dimethylpiperazine as a by-product. CONSTITUTION: In reacting diisopropanolamine w...
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JP2003525924A |
The present invention relates to a process for the hydrogenation of nitrile functional groups to amine functional groups. It relates more particularly to a process for the complete or partial hydrogenation of dinitrile compounds to diami...
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JP2003525107A |
Raney alloy catalysts applied to a support are described, said catalysts having an extremely thin layer of Raney alloy with a thickness of 0.01 to 100 mum. These catalysts are prepared by vapor deposition of the appropriate metals under ...
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JP3429063B2 |
PURPOSE: To provide the method for producing the ethylamine, capable of reducing the load of drainage and improving the rate of employment by using by- produced ethanol as a raw material, and capable of effectively utilizing excessive et...
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JP3425389B2 |
To provide a process for producing a primary amine and its alkylene oxide adduct having good hue in high yield. A primary amine is produced by the hydrogenation of a nitrile using a Raney catalyst containing Ni, Al and Mo at atomic ratio...
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JP3422331B2 |
PURPOSE: To obtain the title compound useful for raw material for medicine and agricultural chemical, etc., in high yield using an inexpensive raw material by carrying out a reaction while feeding a specific N, N-di-substituted aminoacet...
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JP3417597B2 |
PURPOSE: To reduce the poisoning of a catalyst, enable recycling use of the catalyst, and improve the production yield by performing a reaction in an alcohol solvent, when a 1,3-diaminopropane is produced from acrylonitrile by a continuo...
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JP3411284B2 |
PCT No. PCT/EP94/03216 Sec. 371 Date Feb. 29, 1996 Sec. 102(e) Date Feb. 29, 1996 PCT Filed Sep. 27, 1994 PCT Pub. No. WO95/09166 PCT Pub. Date Apr. 6, 1995A process for the preparation of the compound of formula (I) (I) or a salt thereo...
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JP2003516852A |
Spent pyrophoric reaction catalyst from a reaction mixture is removed safely, cheaply, and rapidly using a single plate pressure filter. After hydrogenation, the reaction mixture is decanted, the desired hydrogenation product is removed,...
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JP2003517026A |
Spent pyrophoric reaction catalyst from a reaction mixture is removed safely, cheaply, and rapidly using a single plate pressure filter. After hydrogenation, the reaction mixture is decanted, the desired hydrogenation product is removed,...
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JP3394606B2 |
PURPOSE: To simply obtain the subject compound useful as an intermediate for medicines in high yield without requiring special operations or apparatus by catalytically hydrogenating a readily producible phenylpyruvic acid derivative as a...
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JP3382343B2 |
PURPOSE:To obtain a steam reforming catalyst of methanol having high activity and excellent durability. CONSTITUTION:A process preparing a molten bath of an Al alloy compsn. wherein Cu content is 5-20atom% and the content of at least one...
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JP2003038959A |
To obtain a dried sponge metal catalyst composition capable of being safely and easily handled. The dried sponge metal catalyst composition contains a dried sponge metal catalyst and hydrotalcite.
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JP2003503374A |
A process for preparing mannitol from fructose is described and entails the hydrogenation of fructose taking place in the presence of a Raney copper catalyst and being carried out continuously.
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JP3358631B2 |
PURPOSE: To provide an efficient process for the production of methyl formate by the dehydrogenation of methanol. CONSTITUTION: Methyl formate is produced by the dehydrogenation of methanol in liquid phase using a heterogeneous catalyst ...
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JP2002543963A |
A novel precious metal doped porous metal catalyst is disclosed. The precious metal is present in from 0.01 to 1.5 weight percent and distributed throughout the particles of porous metal to provide a surface to bulk ratio distribution of...
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JP2002543174A |
The present invention provides a new and useful improvement in the process to manufacture a carboxylic acid salt, particularly an amino carboxylic acid salt, from a primary alcohol, particularly a primary aminoalcohol. The process of man...
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JP2002543057A |
Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and an additive for improving th...
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JP2002540092A |
Disclosed is an improved process for preparing 1-chloro-2,4-diaminobenzene by the selective hydrogenation of 1-chloro-2,4-dinitro-benzene wherein the hydrogenation is carried out in the presence of a modified Raney nickel catalyst contai...
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JP3345005B2 |
Amines such as methyl amine are reacted with materials such as reducing sugars in aqueous/hydroxy solvents such as water and/or methanol to prepare N-alkyl polyhydroxy amines. Accordingly, glucose is reacted with methyl amine and the res...
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JP3340439B2 |
PCT No. PCT/FR94/01478 Sec. 371 Date Nov. 25, 1996 Sec. 102(e) Date Nov. 25, 1996 PCT Filed Dec. 16, 1994 PCT Pub. No. WO95/18090 PCT Pub. Date Jul. 6, 1995The present invention relates to the field of the catalytic reduction of nitriles...
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JP2002531239A |
Raney copper, which is doped (promoted) with an effective quantity of a doping (promoting) agent selected from the group boric acid, onium fluorides, salts of fluorine complex anions, and heteropoly acids, represents an outstanding oxida...
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JP2002529227A |
The present invention relates to a Raney catalyst comprising iron, cobalt, a third metal wherein the third metal is selected from the group consisting of nickel, rhodium, ruthenium, palladium, platinum, osmium, iridium and mixtures of an...
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JP3323462B2 |
To obtain an intermediate useful for synthesizing an intermediate of benzo[b]azepin-2-one CCK antagonist. A compound of formula I (X is phenyl, a 3-8C alkyl or the like; and Y1 and Y2 are each a halogen, nitro, amino or the like) and a c...
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JP3322281B2 |
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JP2002241102A |
To provide a method for producing hydrogen by which hydrogen is generated efficiently and at a high generation rate from an alkali water based solution containing a metal hydrogen complex compound.Hydrogen is generated by bringing a nick...
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JP3314219B2 |
PURPOSE: To easily obtain the compound in high yield by reacting a 4-amino-6- alkyl-3-oxo-2,3,4,5-tetrahydro-1,2,4-triazine or the like with a 3-cyanopyridine under specified conditions. CONSTITUTION: The compound is obtained by reacting...
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JP3311359B2 |
A method for filtering a three phase reaction mixture comprising a liquid phase, an undissolved solid catalytic phase and a gas phase includes tangentially filtering through a membrane filter at least part of the three phased reaction mi...
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JP2002524015A |
An improved process is disclosed to prepare an amino carboxylic acid salt. According to the process, an aqueous solution of an amino alcohol is contacted with an alkali metal hydroxide in the presence of an effective amount of a Raney co...
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JP2002205975A |
To provide a method for mildly hydrogenating a nitrile, by which a primary amine can be produced in high selectivity and by which a secondary reaction such as the dissociation of the nitrile can be avoided.This method for hydrogenating t...
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JP2002204957A |
To provide a catalyst body easy to handle a catalyst having an eluted surface state and a production method of the catalyst body.The catalyst body is characterized by having a form in which a powder of mainly one element selected from am...
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JP2002187876A |
To provide a method for producing an N-alkyl polyhydroxyalkyl amine, to be concrete, an N-alkylamine polyol such as N-methylglucamine suitable for producing a fatty acid amide derivative having a low nickel content, excellent color and s...
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JP3293846B2 |
PURPOSE: To obtain alloy particles whose particle diameter is controlled in a narrow range by dropping the molten liquid of alloy in which aluminum or silicon is incorporated into catalytic active metal on the upper face of the disk of a...
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JP3287565B2 |
Selective hydrogenation of aliphatic dinitriles to aminonitriles is achieved under low pressure with high yield preferably using a Raney nickel or Raney colbalt-containing catalyst.
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JP3283314B2 |
PURPOSE: To provide the subject new compound useful as a photoresist material, its raw material, production raw material for various polymeric materials, additive, its production raw material, additive for improving performance of variou...
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JP3275983B2 |
PURPOSE: To produce a diaminobracil compound of high purity useful as a raw material for medicines in high yield with simple operations by hydrogenat ing a nitrosoaminouracil in the presence of a Ni-based catalyst. CONSTITUTION: This met...
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JP3273055B2 |
PURPOSE: To obtain a catalyst excellent in low temp. activity by producing Raney type noble metal catalyst by developing a noble metal-Al alloy obtained by high temp. melt treating a noble metal selected among groups of Ru, Pd, Rh and Pt...
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JP3257670B2 |
To obtain a desired primary amine in high yield and selectivity by hydrogenating an impurity-containing cyanopropionaldehyde acetal in the presence of ammonia or primary amine and an alkali metal hydroxide. Cyanopropionaldehyde acetal co...
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JP2002018292A |
To provide a method for improving a nickel catalyst used when a fatty acid amide derivative useful, for example, as a surfactant for washing is manufactured by reacting an N-alkylamine with a reducing sugar and hydrogen in the presence o...
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JP3244229B2 |
To enable the use of a comparatively smaller continuous stirring tank reactor which is capable of achieving the same gross conversion rate as a gross conversion rate to be achieved by a continuous tank reactor of a far larger size and ge...
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JP3243504B2 |
To prepare a methanol synthesis catalyst showing high activity at the low temperature by bringing an alloy composed of copper, aluminum and zirconium as main components into contact with a water solution in which an alkali metal hydroxid...
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JP2001342163A |
To produce a cyclohexanedione in high yield in high selectivity under a low pressure of hydrogen in the presence of a less expensive Raney-Ni catalyst, in the case where a divalent phenol is hydrogenated to produce the corresponding cycl...
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JP2001524378A5 |
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JP2001524378A |
Raney nickel catalysts obtainable by a process in which the melt of an alloy comprising 50 to 94 wt. % aluminum, 10 to 50 wt. % nickel, 0 to 20 wt. % iron, 0 to 15 wt. % cerium, cerium mixed metal, vanadium, niobium, tantalum, chromium, ...
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