Method for pre-treating hydroamination catalysts

摘要

The present invention relates to a process for the pretreatment of hydroamination catalysts, wherein the hydroamination catalyst is brought into contact with an ammonia-comprising mixture before the reaction of olefins with ammonia, a primary or secondary amine, with the ammonia-comprising mixture comprising less than 40% by weight of olefin;The invention further relates to a process for preparing alkylamines by reaction of olefins with ammonia, primary or secondary amines over a hydroamination catalyst, wherein the hydroamination catalyst is pretreated according to the invention before the reaction of the olefins by bringing the hydroamination catalyst into contact with an ammonia-comprising mixture comprising less than 40% by weight of olefin.

主权项

1. A process for the pretreatment of hydroamination catalysts comprising:
contacting a hydroamination catalyst with an ammonia-comprising mixture at a temperature of from 0 to 50° C., the ammonia-comprising mixture comprising greater than 55% by weight of ammonia, less than 40% by weight of olefin and less than 5% by weight of further constituents, wherein the contacting step occurs before reacting olefins with ammonia, a primary or secondary amine over the hydroamination catalyst.