知搜-全球专利检索

  1. 登录
  2. 注册
发明公开
CN106966908A 用于改进将脂族氰基醛还原胺化为脂族二胺的催化剂体系的催化活性的方法 有权

用于改进将脂族氰基醛还原胺化为脂族二胺的催化剂体系的催化活性的方法
摘要：
本发明涉及用于改进将脂族氰基醛还原胺化为脂族二胺的催化剂体系的催化活性的方法，提供用于改进将脂族氰基醛还原胺化为脂族二胺的催化剂体系的催化活性的方法。该用于改进将脂族氰基醛还原胺化为脂族二胺的催化剂体系的催化活性的方法包括以下步骤：(1)在50℃～500℃的温度持续大于1小时的时间在具有还原催化活性的一种或多种非均相基于金属的催化剂体系上进料氨、任选的氢和任选的一种或多种溶剂；其中所述一种或多种非均相基于金属的催化剂体系的收率小于90％，基于氰基醛至二胺的摩尔转化率；和(2)由此改进所述一种或多种非均相基于金属的催化剂体系的催化活性。
摘要（英）：

The instant invention provides a process for improving catalytic activity of catalyst systems for reductive amination of aliphatic cyanoaldehydes to aliphatic diamines. The process for improving catalytic activity of catalyst systems for reductive amination of aliphatic cyanoaldehydes to aliphatic diamines comprises the steps of: (1) feeding ammonia, optionally hydrogen, and optionally one or more solvents over one or more heterogeneous metal based catalyst systems having a reduced catalytic activity for a period of greater than 1 hour at a temperature in the range of from 50 DEG C to 500 DEG C; wherein said one or more heterogeneous metal based catalyst systems have a yield of less than 90 percent based on the molar conversion of cyanoaldehydes to diamines; and (2) thereby improving the catalytic activity of said one or more heterogeneous metal based catalyst systems.

公开/授权文献
0/0