Location of cation sites in a hydrated copper-exchanged chabazite by extended X-ray absorption fine structure
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 3,p. 943-945
- https://doi.org/10.1039/dt9900000943
Abstract
The local structure around copper ions in a hydrated copper-exchanged chabazite has been characterized by means of extended X-ray absorption fine structure spectroscopy. The model proposed on the basis of the experimental results indicates that copper ions occupy two sites, one with a distorted octahedral co-ordination, the other with a square-pyramidal geometry. The previously suggested hypothesis that copper ions are located in the large cavity of the chabazite is confirmed, although a different co-ordination for one site was detected.Keywords
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