An EXAFS investigation of $Cu-ZnO$ methanol synthesis catalysts

Sankar, G and Vasudevan, S and Rao, CNR (1986) An EXAFS investigation of $Cu-ZnO$ methanol synthesis catalysts. In: Journal of Chemical Physics, 85 (4). pp. 2291-2299.

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Abstract

Cu K-edge EXAFS of calcined and reduced $Cu-ZnO$ methanol synthesis catalysts (with a maximum copper content of 33 at wt. %) have been studied. The calcined catalysts contain two species, ${Cu^2^+}$ in a CuO-like phase and ${Cu^2^+}$ occupying substitutional sites in the ZnO lattice. The reduced catalysts contain three species, $Cu^0$, $Cu{^1^+}$ in a $Cu_2O$-like phase, and ${Cu^1^+}$ in an interstitial site in the ZnO lattice. In carrying out the EXAFS analysis of these multiphasic catalysts, we have employed an additive relation for the EXAFS function and made use of residual spectra for identifying unknown species.

Item Type:	Journal Article
Publication:	Journal of Chemical Physics
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	08 Jul 2008
Last Modified:	19 Sep 2010 04:47
URI:	http://eprints.iisc.ac.in/id/eprint/14843

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