公开(公告)号：US07098167B2

公开(公告)日：2006-08-29

申请号：US10087944

申请日：2002-03-05

Applicant: Michael J Watson

Inventor： Michael J Watson

IPC: B01J23/72 ,  B01J23/835

CPC classification number: C07C29/153 ,  B01D2257/2045 ,  B01J20/0255 ,  B01J20/0296 ,  B01J20/08 ,  B01J20/3234 ,  B01J23/80 ,  B01J35/0006 ,  C01B3/16 ,  C07C29/154 ,  Y02P20/52 ,  C07C31/04

Abstract: A combination comprising a bed of a particulate copper-containing catalyst and, a guard bed of a particulate composition containing a) lead and/or at least one lead compound that reacts with hydrogen chloride and b) a support therefor. The lead compound is preferably lead nitrate. The combination is of particular utility for the low temperature shift reaction wherein carbon monoxide is reacted with steam to produce hydrogen and carbon dioxide.