PURPOSE: To prevent the sintering of a catalyst carrier due to long-time use at high temp., the sulfurization of the carrier by SOx in exhaust gas and the active aggregation of the carrier by hot steam in a catalyst for purification of exhaust gas contg. combustible harmful components discharged from an automobile or various industrial facilities and k obtain an exhaust gas purifica tion catalyst less lowering of its activity.

CONSTITUTION: A ternary multiple oxide formed from silica (SiO2), titania (TiO2) and ceria (CeO2) is used as a catalyst carrier so as to improve resistance to high temp., hot steam and SOx, and the specific surface area is increased by the combination of the plural oxides. A catalytically active component made of palladium having high heat resistance or composed of palladium and platinum is dispersedly carried on the catalyst carrier by ≥1wt.%.