公开(公告)号：US3842017A

公开(公告)日：1974-10-15

申请号：US31470472

申请日：1972-12-13

Applicant: CORNING GLASS WORKS

Inventor： ARMISTEAD W ,  ELMER T ,  LICHTENSTEIN I

IPC: B01J23/38 ,  B01J23/54 ,  B01J35/04 ,  B01J37/02 ,  B01J37/16 ,  B01J11/08 ,  B01J11/12 ,  B01J11/20

CPC classification number: B01J35/04 ,  B01J23/38 ,  B01J23/54 ,  B01J37/0203 ,  B01J37/0207 ,  B01J37/16 ,  Y10S502/509

Abstract: 1. IN A PROCESS FOR DEPOSITING A NOBLE METAL CATALYST ON A REFRACTORY METAL OXIDE CARRIER WHICH COMPRISES THE STEP OF CONTACTING THE REFRACTORY METAL OXIDE CARRIER WITH A SOLUTION CONTAINING A FORMIC ACID REDUCTANT AND NOBLE METAL IONS SELECTED FROM THE GROUP CONSISTING OF PALTINUM, PALLADIUM, RHODIUM, GOLD, SILVER AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES THE ADDITION OF UREA TO THE SOLUTION IN AN AMOUNT RANGING ABOUT 1-110% BY WEIGHT THEREOF.