Crystal structures of paraelastic aluminum molybdate and ferric molybdate, {beta}-Al{sub 2}(MoO{sub 4}){sub 3} and {beta}-Fe{sub 2}(MoO{sub 4}){sub 3}
- Univ. of Houston, TX (United States). Dept. of Chemistry
Iron/molybdenum/oxygen compounds are important partial oxidation catalysts, and stoichiometric ferric molybdate, Fe{sub 2}(MoO{sub 4}){sub 3}, has been identified as the key component of these mixtures. The high-temperature crystal structures of {beta}-Al{sub 2}(MoO{sub 4}){sub 3} and {beta}-Fe{sub 2}(MoO{sub 4}){sub 3}, as determined by Rietveld refinements against time-of-flight neutron powder data, are described. Both phases crystallize in the orthorhombic scandium tungstate [Sc{sub 2}(WO{sub 4}){sub 3}] structure and consist of MO{sub 6} (M = Al, Fe) and MoO{sub 4} building blocks, fused together via M-O-Mo bonds. Both materials have rearranged from their room-temperature monoclinic structures.
- OSTI ID:
- 137036
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 11 Vol. 30; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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