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High Temperature Behaviour of Polyoxometalates Containing Lanthanides

Published online by Cambridge University Press:  01 February 2011

Hajime Kinoshita ,
Marcus Brewer ,
Caytie E. Talbot-Eeckelaers ,
Nik Reeves ,
Roy Copping ,
Clint A. Sharrad  and
Iain May
Hajime Kinoshita
Affiliation:
Department of Engineering Materials, The University of Sheffield, Mappin Street, Sheffield, S1 3JD, U.K.
Marcus Brewer
Affiliation:
Department of Engineering Materials, The University of Sheffield, Mappin Street, Sheffield, S1 3JD, U.K.
Caytie E. Talbot-Eeckelaers
Affiliation:
Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
Nik Reeves
Affiliation:
Department of Engineering Materials, The University of Sheffield, Mappin Street, Sheffield, S1 3JD, U.K.
Roy Copping
Affiliation:
Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
Clint A. Sharrad
Affiliation:
Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
Iain May
Affiliation:
Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
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Abstract

The possibility of a simple heating process of POM to obtain tungsten bronze was investigated for nuclear waste immobilisation via DTA/TG and high temperature XRD. Heating process up to 900°C caused the decomposition of structure for both systems. Cooling process seemed to have little effect on the final product for the K11[Nd(PW11O39)2]·xH2O, whereas the cooling profile showed a significant effect on the K13[Nd(SiW11O39)2]·xH2O. Nd formed two types of tungsten bronzes, namely Nd2WO6 and Nd4W3O15 in K11[Nd(PW11O39)2]·xH2O and K13[Nd(SiW11O39)2]·xH2O, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1107: Scientific Basis for Nuclear Waste Management XXXI , 2008 , 347
Copyright
Copyright © Materials Research Society 2008

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