公开(公告)号：DE19742221A1

公开(公告)日：1999-03-25

申请号：DE19742221

申请日：1997-09-24

Applicant: BASF AG

Inventor： VOIT GUIDO DR ,  BOHNSACK ANDREAS DR ,  FISCHER ROLF DR ,  BASLER PETER DR ,  LUYKEN HERMANN ,  MERGER MARTIN DR ,  FLICK KLEMENS DR

IPC: B01J23/745 ,  C07B61/00 ,  C07C253/30 ,  B01J23/78 ,  C07C255/24 ,  C07C255/26

Abstract: Aliphatic alpha ,w-dinitriles with a phosphorus content of 1.0 ppm or more by weight (ppm wt.) are used for the production of alpha ,w-aminonitriles by partial hydrogenation in presence of a special iron-based catalyst containing a promoter based on aluminium, silicon, zirconium, titanium and/or vanadium. A process for the production of aliphatic alpha ,w-aminonitriles comprises the partial hydrogenation of corresponding dinitriles with a phosphorus content of 1.0 ppm wt. or more in presence of a catalyst containing (a) iron and/or an iron compound, (b) 0.01-5 wt% (based on a) of a promoter based on 2, 3, 4 or 5 elements selected from Al, Si, Zr, Ti and V, and (c) 0-0.5 wt% of an alkali or alkaline earth metal compound. An Independent claim is also included for catalysts with the above composition obtained by the reduction and optional passivation of magnetite, showing a BET surface of 3-10 m /g, a total pore volume of 0.05-0.2 ml/g and an average pore diameter of 0.03-0.1 micron, with 50-70% (by volume) of the pores in the range from 0.01 to 0.1 microns.