PURPOSE: To enable the removal of oxygen from an oxygen-contg. gas efficiently and continuously by low temp. catalytic combustion by using a titled catalyst produced by depositing a ferrous metal as a catalytic substrate, an oxide of a rare earth element and a platinum group metal on a carrier of silica or the like.
CONSTITUTION: A ferrous metal as a catalytic substrate, an oxide of a rare earth element and a platinum group metal are deposited on a carrier consisting of silica or alumina. 3W12% Ni or C among the ferrous group metal, 1W6% La oxide or Ce oxide among the oxide of the rare earth element and 0.05W1.0% platinum group metal selected from the group consisting of Rh, platinum, Pd, Ru and Ir are deposited thereon. This catalyst has extremely high efficiency of removing oxyen and a long ife as compared with conventional catalysts for removal of oxygen, more particularly an oxygen absorption type catalyst. The catalyst has excellent heat resistance, and even if the sulfur usually acting as a catalytic poison exists in the gaseous mixture to be treated, the poisoning is prevented because the application temp. is low.
INUI SATOYUKI
INAGAWA HIDEJI
TAKEUCHI MASAMI
INUI SATOYUKI
KANSAI COKE & CHEMICALS