Studebaker & Brackett PC
Exhaust gas purification catalyst and method for manufacturing same
An exhaust gas purification catalyst is disposed in an exhaust gas channel of an engine and includes a catalytic layer 22 provided on a substrate 21. The catalytic layer 22 contains multiple types of γ-aluminas 23 and 24 which are different in composition and Pt 25 loaded on the multiple types of γ-aluminas 23 and 24. 
MAZDA MOTOR CORPORATION
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Hiroshi Koichiro Takashi Masahiko Akihide
Yamada Harada Baba Shigetsu Takami