Issue 1, 2013

Structure and speciation of chromium ions in chromium doped Fe2O3catalysts

Abstract

In this paper, we report a detailed characterisation of chromium doped iron oxide catalysts using a range of techniques to establish the nature of chromium species in the near surface and bulk of iron oxide, high-temperature shift (HTS) catalysts. In particular we have employed X-ray absorption spectroscopy Cr K-edge near edge and extended fine structure data for comparison with chemical and X-ray photoelectron spectroscopy. There was excellent agreement between the techniques in terms of identification and quantification of Cr6+ and Cr3+ species as a function of calcination temperatures between 100 and 500 °C.

Graphical abstract: Structure and speciation of chromium ions in chromium doped Fe2O3 catalysts

Article information

Article type
Paper
Submitted
27 Feb 2012
Accepted
31 Oct 2012
First published
01 Nov 2012

Phys. Chem. Chem. Phys., 2013,15, 168-175

Structure and speciation of chromium ions in chromium doped Fe2O3 catalysts

V. Martis, R. Oldman, R. Anderson, M. Fowles, T. Hyde, R. Smith, S. Nikitenko, W. Bras and G. Sankar, Phys. Chem. Chem. Phys., 2013, 15, 168 DOI: 10.1039/C2CP43307A

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