Patent ID: 6255521
Filing Date: 2001-07-03
Classification: B01J,C07C

Abstract:
A process for the preparation of aliphatic alpha, omega-aminonitriles by partial hydrogenation of aliphatic alpha,omega-dinitriles in the presence of a catalyst which(a) contains iron or a compound based on iron or mixtures thereof and(b) contains from 0.01 to 5% by weight, based on (a), of a promoter based on 2, 3, 4 or 5 elements selected from the group consisting of aluminum, silicon, zirconium, titanium and vanadium and(c) from 0 to 0.5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal, wherein the alpha,omega-dinitrile used contains 1.0 ppm by weight or more of phosphorus.