Process for the catalytic hydrogenation of nitriles to amines in the presence of a catalyst of doped raney nickel type

摘要

PCT No. PCT/FR94/01478 Sec. 371 Date Nov. 25, 1996 Sec. 102(e) Date Nov. 25, 1996 PCT Filed Dec. 16, 1994 PCT Pub. No. WO95/18090 PCT Pub. Date Jul. 6, 1995The present invention relates to the field of the catalytic reduction of nitriles to amines by use of Raney catalysts doped with one or a number of additional metal elements chosen from the elements of group IVb of the periodic classification. More precisely, it relates to a process for the hydrogenation of nitriles to amines, characterized in that it essentially consists: in selecting a liquid reaction medium which dissolves the nitrile substrate to be hydrogenated, in using at least one inorganic alkali metal or alkaline-earth metal hydroxide base, and in adopting a catalyst whose doping element/Ni ratio by weight is between 0.05 and 10%. More specific application to the hydrogenation of dinitriles to diamines or to aminonitriles.