cas 6864-37-5, Dimethyldicyane | Articles data

Articles about 6864-37-5Total 5 be found

Method for preparing aliphatic amine through reduction of aromatic amine compound
The invention provides a method for preparing aliphatic amine through reduction of an aromatic amine compound. According to the method, the aromatic amine compound is taken as a reaction substrate, and is subjected to hydrogenation reaction with a supported ruthenium catalyst and a deamination retardant in a solvent, so that an aliphatic amine compound is obtained; the deamination retardant adoptsaluminum-containing inorganic salt. The method has the advantages that through the addition of the deamination retardant during catalytic hydrogenation reduction of aromatic amine, the frequency of deamination side reaction produced by target products is reduced, so that the yield of the target products is improved, and the production cost of the specific yield of the target products is reduced.By taking the preparation of PACM as an example, the yield of the target product PACM can reach greater than 98 percent, and the preparation method has an important application value for practical mass production in the industry.
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Paragraph 0060-0062; 0072-0074

(2018/07/30)

Catalyst and process for hydrogenating aromatics
The present invention relates to an eggshell catalyst comprising an active metal selected from the group consisting of ruthenium, rhodium, palladium, platinum and mixtures thereof, applied to a support material comprising silicon dioxide, wherein the pore volume of the support material is 0.6 to 1.0 ml/g, determined by Hg porosimetry, the BET surface area is 280 to 500 m2/g, and at least 90% of the pores present have a diameter of 6 to 12 nm, to a process for preparing this eggshell catalyst, to a process for hydrogenating an organic compound which comprises at least one hydrogenatable group using the eggshell catalyst, and to the use of the eggshell catalyst for hydrogenating an organic compound.
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Page/Page column 21; 22

(2015/07/27)

METHOD OF CONVEYING LIQUIDS
The present invention relates to a method of continuously conveying a liquid which is used as starting material in a chemical reaction by means of a displacement pump having physically separate forward-transport valves and a liquid-filled bidirectional flow line between displacement pump and forward-transport valves, wherein an auxiliary liquid which is a product or a starting material of the chemical reaction and has a melting point which is below the melting point or below the saturation temperature of the liquid to be conveyed is present in the bidirectional flow line. The present invention additionally provides for the use of a product formed by hydrogenation of an aromatic compound as auxiliary liquid for conveying an aromatic compound and also the use of an alcohol or an ester derived from alcohol and carboxylic acid as auxiliary liquid for conveying carboxylic acids or carboxylic acid derivatives.
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Page/Page column 8-9

(2012/05/20)

CONTINUOUS METHOD AND REACTOR FOR HYDROGENATING ORGANIC COMPOUNDS
The present invention relates to a continuous process for hydrogenating organic compounds in a polyphasic system in the presence of a homogeneous or heterogeneous catalyst, which comprises performing the process in two stages, the first stage being performed in a loop reactor with an external heat exchanger and the second stage in a bubble column reactor with limited backmixing. The present invention further relates to a hydrogenation reactor (1) in a tall cylindrical design comprising a concentric guide tube (2) arranged in the lower reaction region and a mixing nozzle (3) directed upward, through which reactants and reaction mixture can be supplied, a pump (4) and a heat exchanger (5), which are present in an external pump circulation system which leads from the reactor to the mixing pump, and with one or more gas- and liquid-permeable internals (10) mounted in the upper region of the reactor, where the ratio of total length to diameter of the hydrogenation reactor (1) is in the range from 5:1 to 100:1 and the ratio of the volume of the upper region of the reactor to the volume of the lower region of the reactor is from 0.05:1 to 10:1.
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Page/Page column 9

(2011/06/24)

PROCESS FOR PREPARING CYCLOALIPHATIC AMINES
A process for preparing cycloaliphatic amines by hydrogenating the corresponding aromatic compounds with hydrogen-comprising gas at a temperature of from 30 to 280° C. and a pressure of 50-350 bar, in the presence of ruthenium catalysts. The hydrogenation is performed in the presence of from 1% by weight to 500% by weight, based on the catalyst calculated as elemental ruthenium (Ru), of suspended inorganic additives, and to the use of the cycloaliphatic amines as a synthesis unit.
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Page/Page column 5

(2010/12/18)