Abstract
XANES and EXAFS analysis of Cu ion-exchanged ZSM-5 zeolite, a highly active catalyst for NO decomposition, is performed. The copper species in the zeolite are Cu(II) ions in the zeolite cages. The contribution of Cu-Cu local structure is suggested for high loading samples. The Cu atoms in the zeolite are more ionic than CuO. The analysis of the catalyst deactivated by SOx treatment suggests the presence of Cu atoms surrounded by SO4 ions which blocks the adsorption of NO molecules.
Similar content being viewed by others
References
M. Iwamoto, S. Yokoo, K. Sakai and S. Kagawa, J. Chem. Soc. Faraday Trans. 1, 77 (1981) 1629.
M. Iwamoto, H. Furukawa and S. Kagawa, in:New Development in Zeolite Science and Technology (Kodansha, Tokyo, 1986) p. 943.
T. Miyanaga, N. Matsubayashi, I. Watanabe and S. Ikeda, Advances in X-ray Chemical Analysis 19 (1988) 119.
M. Nomura, A. Kazusaka, N. Kakuta, Y. Ukisu and K. Miyahara, Chem. Phys. Lett. 122 (1985) 533.
S. Tanabe and H. Matsumoto, Chem. Lett. (1989) 539.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hamada, H., Matsubayashi, N., Shimada, H. et al. XANES and EXAFS analysis of copper ion-exchanged ZSM-5 zeolite catalyst used for nitrogen monoxide decomposition. Catal Lett 5, 189–196 (1990). https://doi.org/10.1007/BF00763952
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00763952