Patent ID: 6521564
Filing Date: 2003-02-18
Classification: B01J,C07C,Y10S

Abstract:
A process for modifying a hydrogenation catalyst of a Raney nickel, Raney cobalt, nickel-on-carrier or cobalt-on-carrier type, comprising:a) providing a hydrogenation catalyst of the Raney nickel, Raney cobalt, nickel-on-carrier, or cobalt-on-carrier type; and b) treating the hydrogenation catalyst at temperatures of about 0Â° C. to about 120Â° C. with a modification agent selected from the group consisting of carbon dioxide, formaldehyde, a lower aliphatic aldehyde, an aromatic aldehyde, an aliphatic ketone, an aromatic ketone, a mixed aliphatic/aromatic ketone, glyoxal, pyruvaldehyde, and glyoxylic acid in a liquid dispersion medium consisting of water or an organic solvent for about 15 minutes to about 24 hours.