摘要:
The present invention relates to the industrial production of vinylene carbonate (VC) by eliminating hydrogen chloride from chloroethylene glycol carbonate (CGC) or solid catalysts in the gas phase, the reaction being carried out over a catalyst bed agitated by thorough mixing.
摘要:
The present invention relates to the industrial production of vinylene carbonate (VC) by eliminating hydrogen chloride from chloroethylene glycol carbonate (CGC) or solid catalysts in the gas phase, the reaction being carried out over a catalyst bed agitated by thorough mixing.
摘要:
The invention relates to a process for the preparation of optically active alcohols from optically active carboxylic acids by reducing an optically active carboxylic acid with hydrogen in the presence of a catalyst comprising ruthenium and at least one further metal or transition metal having an atomic number in the range of from 23 to 82.
摘要:
The invention relates to a process for the preparation of diaminodicyclohexylmethane (“PACM”) with a proportion of trans,trans-4,4′-diaminodicyclohexylmethane of from 17 to 24% by hydrogenation of diaminodiphenylmethane (“MDA”) in the presence of a pulverulent catalyst in a continuously operated suspension reactor at a conversion of MDA of at least 95%, based on the amount of MDA used.
摘要:
The invention relates to a process for preparing optically active amino alcohols from optically active amino acids by reducing an optically active amino acid with hydrogen in the presence of a ruthenium-containing catalyst and an acid.
摘要:
The invention relates to catalysts containing ruthenium and at least one other metal having an atomic number in the range of from 23 to 82 prepared by (a) mixing a suspension of a ruthenium compound having a specific surface area in the range of from 50 to 300 m2/g with a solution of at least one metal compound in which at least one such metal compound contains a metal different from ruthenium and has an atomic number in the range of from 23 to 82, and (b) treating the mixture of the suspension and the solution with a reducing agent.
摘要翻译:本发明涉及含有钌和至少一种原子序数在23至82范围内的其它金属的催化剂,其通过以下步骤制备:(a)混合比表面积为50-300的钌化合物的悬浮液 m 2 / g,其中至少一种金属化合物的溶液,其中至少一种这样的金属化合物含有不同于钌的金属,原子序数在23至82的范围内,和(b)处理悬浮液的混合物 和还原剂的溶液。