Document Detail


Structure and speciation of chromium ions in chromium doped Fe(2)O(3) catalysts.
MedLine Citation:
PMID:  23147963     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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 Cr(6+) and Cr(3+) species as a function of calcination temperatures between 100 and 500 °C.
Authors:
Vladimir Martis; Richard Oldman; Ross Anderson; Martin Fowles; Tim Hyde; Richard Smith; Sergey Nikitenko; Wim Bras; Gopinathan Sankar
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-13
Journal Detail:
Title:  Physical chemistry chemical physics : PCCP     Volume:  -     ISSN:  1463-9084     ISO Abbreviation:  Phys Chem Chem Phys     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888160     Medline TA:  Phys Chem Chem Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
University College London, Department of Chemistry, 20 Gordon Street, London, WC1H 0AJ, UK.
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