Exhaust Gas Purification Catalyst

Abstract: the present invention provides an exhaust gas purification catalyst having high exhaust gas purification performance at cold start after the hydrothermal durability treatment. the exhaust gas purification catalyst disclosed herein includes a base material and a catalyst layer provided on the base material. the catalyst layer includes a catalyst metal and a hydrocarbon adsorption material. the hydrocarbon adsorption material contains 80 mass % or more of molecular sieve substantially containing no si.

Inventor(s): Akiya Chiba, Ryoichi Ogawa, Yuki Kawakami, Hiroto Imai

CPC Classification: B01J35/19 ({Catalysts containing parts with different compositions})

Search for rejections for patent application number 20250196118