申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0913388A1
公开(公告)日:1999-05-06
An improved process for the catalytic hydrogenation of nitriles. The basic process comprises contacting the nitrile with hydrogen in the presence of a sponge or Raney cobalt catalyst under conditions for effecting conversion of the nitrile group to the primary amine. The improvement in the hydrogenation process resides in effecting the hydrogenation in the presence of a catalytic amount of lithium hydroxide and water. To achieve a catalytic amount of lithium hydroxide, the catalyst may be pretreated with the lithium hydroxide and/or the reaction may be carried out with the lithium hydroxide present in the reaction medium.
一种改进的腈催化加氢工艺。基本工艺包括在海绵
钴或雷尼
钴催化剂的存在下,使腈与氢接触,条件是使腈基转化为
伯胺。氢化工艺的改进在于在
氢氧化锂和
水的催化下进行氢化。为了达到
氢氧化锂的催化量,可以用
氢氧化锂对催化剂进行预处理,和/或在反应介质中存在
氢氧化锂的情况下进行反应。