CATALYST FOR OXIDATION OF GASEOUS COMPOUND

摘要

A catalyst for accelerating the oxidation of a gaseous compound by an oxygen ion supplied via a solid electrolyte in a circumstance free of an oxygen molecule, characterized in that it comprises metal oxide particles which are formed by providing a mixed solution containing two types of metal salts having different metals dissolved therein, subjecting the mixed solution to coprecipitation to prepare a precipitate having two types of metal hydrates mixed with each other, and firing the precipitate, and have a composition represented by the formula: ABO2 wherein A represents an element selected from the group consisting of Pd, Pt, Cu and Ag and B represents an element selected from the group consisting of Co, Cr, Rh, Al, Ga, Fe, In, Sc and Tl. The above catalyst is an oxidation catalyst for a gaseous compound which can be formed in the form of fine particles with no pulverizing operations and exhibits excellent catalytic activity for oxidation.