Process for the hydrogenation of nitriles to primary amines or aminonitriles and catalysts suitable therefor

摘要

The invention relates to a process for the hydrogenation of oligonitriles which have at least two nitrile groups in the presence of a catalyst which is pretreated before the start of the hydrogenation by contacting it with a compound A which is selected from alkali metal carbonates, alkaline earth metal carbonates, ammonium carbonate, alkali metal hydrogen carbonates, alkaline earth metal hydrogen carbonates , ammonium hydrogen carbonate, Erdalkalimetalloxocarbonaten, alkali metal carboxylates, alkaline earth metal carboxylates, ammonium carboxylates, Alkalimetalldihydrogenphosphaten, Erdalkalimetalldihydrogenphosphaten, alkali metal hydrogen phosphates, Erdalkalimetallhydrogenphosphaten, alkali metal phosphates, alkaline earth phosphates and ammonium phosphate, alkali metal acetates, alkaline earth metal acetates, ammonium acetate, alkali metal formates, Erdalkalimetallformiaten, ammonium formate, Alkalimetalloxalaten, Erdalkalimetalloxalaten and ammonium oxalate.