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On the nature and structure of new MoVTeO and MoVTeNbO crystalline phases

Published online by Cambridge University Press:  11 February 2011

E. García-González ,
J. M. López Nieto ,
P. Botella ,
B. Solsona  and
J.M. González-Calbet
E. García-González
Affiliation:
Dpto. Q. Inorgánica; Facultad de Químicas, Universidad Complutense, 28040-Madrid, Spain
J. M. López Nieto
Affiliation:
Inst. Tecnología Química, UPV-CSIC, Avenida de los Naranjos s/n, 46022-Valencia, Spain.
P. Botella
Affiliation:
Inst. Tecnología Química, UPV-CSIC, Avenida de los Naranjos s/n, 46022-Valencia, Spain.
B. Solsona
Affiliation:
Inst. Tecnología Química, UPV-CSIC, Avenida de los Naranjos s/n, 46022-Valencia, Spain.
J.M. González-Calbet
Affiliation:
Dpto. Q. Inorgánica; Facultad de Químicas, Universidad Complutense, 28040-Madrid, Spain
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Abstract

New TeMoV and TeMo(V,Nb) bronze type phases have been obtained during the heat-treatment (600° C in N2) of the corresponding precursor mixture. Both mixed oxides seem to be structurally related to one of the crystalline phases proposed in Mo-V-Te-Nb-O catalysts. Chemical and microstructural characterization revealed the formation of an orthorhombically distorted cell deriving from a bronze type HTB structure, which does not behave as a bronze type structure in the chemical sense. Microstructural details responsible for the new unit cell are discussed in terms of tellurium location inside the hexagonal tunnels and based on the structural model proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 755: Symposium DD – Solid-State Chemistry of Inorganic Materials IV , 2002 , DD7.10
Copyright
Copyright © Materials Research Society 2003

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References

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