公开(公告)号：US3684740A

公开(公告)日：1972-08-15

申请号：US3684740D

申请日：1969-06-10

Applicant: ATLANTIC RICHFIELD CO

Inventor： CIMBALO ROBERT N ,  BROYLES ALLEN R

IPC: B01J23/96 ,  C07C5/08 ,  B01J11/18 ,  B01J11/04

CPC classification number: B01J23/96 ,  C07C5/08 ,  C07C2523/40 ,  C07C2523/44 ,  Y02P20/584

Abstract: A NEW METHOD FOR REGENERATING A HYDROGENATION OF DEHYDROGENATION CATALYST OF A PLATINUM-GROUP METAL ON ALPHA-ALUMINA IS DISCLOSED. THE REACTOR CONTAINING THE CATALYST IS FIRST HEATED WITH AN OXIDIZING GAS TO BURN OFF DEPOSITED CARBONACEOUS MATERIAL. AFTER THE BURNING, THE CATALYST IS COOLED AND WASHED WITH LIQUID PHASE WATER FOR A TIME SUFFICIENT TO REMOVE IMPURITIES. THIS BURN AND WATER-WASH REGENERATION PROCEDURE CAN RESTORE THE CATALYST ACTIVITY AND SELECTIVITY TO SUBSTANTIALLY VIRGIN LEVELS.