Title:
【発明の名称】銅触媒
Document Type and Number:
Japanese Patent JPH09509881
Kind Code:
A
Abstract:
PCT No. PCT/GB95/00416 Sec. 371 Date Sep. 3, 1996 Sec. 102(e) Date Sep. 3, 1996 PCT Filed Feb. 28, 1995 PCT Pub. No. WO95/23644 PCT Pub. Date Sep. 8, 1995Stabilization of a reduced copper catalyst by a) passivating the catalyst by passing a gas stream that is free of reducing gases and which contains 0.05 to 0.5% by volume of oxygen and an amount of carbon dioxide at least twice the amount of oxygen through a bed of the catalyst until the catalyst is passivated, the proportion of oxygen in said gas stream and the temperature at which it is fed to the bed being such that the temperature of the catalyst does not rise to above 100 DEG C. during said passivation step, and then b) increasing the oxygen content of the gas passing through the bed until the oxygen partial pressure corresponds to that of air at atmospheric pressure. The process may be applied to the stabilization of fresh reduced catalysts or to the stabilization of used, e.g. spent catalysts, before discharge thereof from a reactor.
Inventors:
Woodroff, Kathy Ann
Application Number:
JP52275295A
Publication Date:
October 07, 1997
Filing Date:
February 28, 1995
Export Citation:
Assignee:
IMPERIAL CHEMICAL INDUSTRIES PLC
International Classes:
B01J23/72; B01J23/80; B01J33/00; B01J37/08; C07B61/00; C07C29/154; C07C29/156; C07C31/04; C23C8/12; C23C8/16; (IPC1-7): B01J23/72; B01J23/80; B01J37/08; C23C8/12
Attorney, Agent or Firm:
Kyozo Yuasa (5 people outside)