Patent ID: 8987517
Filing Date: 2015-03-24
Classification: C07C,C08K,Y02P

Abstract:
1. A process for preparing cycloaliphatic amines comprising: performing hydrogenation of corresponding aromatic compounds with hydrogen-comprising gas at a temperature of from 30 to 280° C. and a pressure of 50-350 bar, in the presence of ruthenium catalysts used without support material, and from 1% by weight to 500% by weight, based on the catalyst (calculated as elemental ruthenium (Ru)), of suspended inorganic additives or metal soaps, wherein the inorganic additives are selected from the group consisting of silicon dioxide, alkali metal silicates, alkaline earth metal silicates, aluminum silicates, alkali metal borosilicates, alkaline earth metal borosilicates, aluminum borosilicates, titanium dioxide, zeolites, magnesium oxide, zinc oxide, zirconium oxide, activated carbons, carbon molecular sieves, natural carbon black, and synthetic carbon black.