Method for hydrogenating nitrile functions into amine functions

摘要

The invention concerns a method for hydrogenating nitrile functions into amine functions. More particularly, the invention concerns a method for total or partial hydrogenation of dinitrile compounds into diamine or aminonitrile compounds. The invention concerns a method for hydrogenating nitrile functions into amine functions, using hydrogen and in the presence of a hydrogenation catalyst and a strong mineral base preferably derived from an alkaline or alkaline-earth metal. The invention is characterised in that the method comprises a step which consists in conditioning the catalyst by mixing the hydrogenation catalyst, a specific amount of strong mineral base and a solvent wherein the strong mineral base is hardly soluble. Said solvent is an amine compound such as hexamethylene diamine in the case of hydrogenation of adiponitrile into HMD and/or aminocapronitrile.