公开(公告)号：US3843491A

公开(公告)日：1974-10-22

申请号：US31906072

申请日：1972-12-27

Applicant: SNAM PROGETTI

Inventor： PIRO M ,  RIVOLA L ,  NOTARI B

IPC: B01J23/50 ,  B01J37/34 ,  C07D301/10 ,  C07D303/04 ,  C25C1/20 ,  C25C5/00 ,  C22D5/00 ,  C22D1/12

CPC classification number: C07D301/10 ,  B01J23/50 ,  B01J37/348 ,  Y02P10/138

Abstract: 1. A PROCESS FOR THE PREPARATION OF SILVER USEFUL AS A CATALYST BY SILVER ELECTROCHEMICAL DEPOSITION COMPRISING: COMPLEXING A SILVER COMPOUND WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF AMMONIC AND FLUOBORIC IONS, ELECTROLYTICALLY DEPOSITING THE SILVER COMPOUND ON A CATHODE, AND CONCURRENTLY REMOVING THE DEPOSITED SILVER FROM SAID CATHODE WHEREBY THE REMOVED SILVER HAS A SIZE OF LESS THAN 1500 A.