Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9610101 | Catalysis Today | 2005 | 13 Pages |
Abstract
ESR and UV-vis DR spectroscopy have been used to elucidate stabilization conditions of copper ions in Cu-ZSM-5 zeolites as isolated Cu2+ ions, chain copper oxide structures and square-plain oxide clusters. The ability of copper ions for reduction and reoxidation in the chain structures may be responsible for the catalytic activity of Cu-ZSM-5. These transformations of copper ions are accompanied by the observation of intervalence transitions Cu2+-Cu+ and CTLM of the chain structures in the UV-vis spectra.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Svetlana A. Yashnik, Zinfer R. Ismagilov, Vladimir F. Anufrienko,