公开(公告)号：US3766089A

公开(公告)日：1973-10-16

申请号：US3766089D

申请日：1972-05-15

Applicant: DIAMOND SHAMROCK CORP

Inventor： DE PABLO R ,  BENEDICT H

IPC: B01J23/46 ,  B01J23/96 ,  C07D295/023 ,  B01J11/78

CPC classification number: C07D295/023 ,  B01J23/462 ,  B01J23/96 ,  Y02P20/584 ,  Y10S502/514

Abstract: AN IMPROVED RUTHENIUM CATALYST IS PREPARED BY IMPREGNATING A CATALYST SUPPORT WITH A RUTHENIUM CHLORIDE SOLTUION, DRYING THE IMPREGNATED SUPPOT BY VOLATILIZATION OF THE RUTHENIUM CHLORIDE SOLUTION AD THEN PARTIALLY REDUCING THE DRIED RUTHENIUM CHLORIDE COATING ON THE SUPPORT. THE CATALYST IS USEFUL IN THE HYDROGENATION OF THE PYRROLES. SPENT CATALYST CAN BE REJUVENATED BY RECOATING WITH RUTHENIUM CHLORIDE SOLUTION, DRYING THE COATED SPENT CATALYST AND THEN PARTIALLY REDUCING THE RUTHENIUM CHLORIDE COATING.