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Active site configurations within the NO decomposition catalyst, Cu-ZSM-5; the role of framework aluminium

Sayle, D.C., Catlow, C.R.A., Gale, J.D., Perrin, M.A., Nortier, P. (1997) Active site configurations within the NO decomposition catalyst, Cu-ZSM-5; the role of framework aluminium. Journal of Materials Chemistry, 7 (8). pp. 1635-1639. ISSN 0959-9428. (doi:10.1039/A701716B) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:46833)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1039/A701716B

Abstract

Computer modelling techniques have been used to identify the extra-framework copper clusters which form the active sites in the Cu-ZSM-5 de-NOx catalysts. In particular, we suggest that both isolated copper and Cu - OH - Cu species represent useful models for the active site. These species are strongly anchored to the zeolite wall via framework aluminium, in the absence of which the clusters undergo significant structural modifications. Specifically, we observe changes both in the Cu - O and Cu - Cu bond distances and also in the coordination numbers of the copper. We suggest that such changes are responsible, in part, for the relationship between the copper loading and Si/Al ratio and the catalytic activity of the material.

Item Type: Article
DOI/Identification number: 10.1039/A701716B
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Dean Sayle
Date Deposited: 20 Mar 2015 16:03 UTC
Last Modified: 16 Nov 2021 10:19 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46833 (The current URI for this page, for reference purposes)

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