日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

XAFS has been used as a poweful tool for the characterization of structure and electronic properties of metals supported on zeolites. Valuable information such as diameter, shape of metals, genesis of metal particles in zeolite pore could be obtained from the XAFS measurement. The author has applied XAFS technique for the palladium catalyst supported on zeolite in order to reveal the influence of acidity of zeolites on the catalysis and structure of Pd. These studies revelated that the acid sites of zeolites affected profoundly on the generation of dispersed PdO, Pd metal and active species in the methane combustion and selective reduction of NO.