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Journal of Chemical Sciences

, Volume 115, Issue 5–6, pp 525–532 | Cite as

Following the crystallisation of Bi2Mo2O9 catalyst by combined XRD/QuEXAFS

  • Andrew M. Beale
  • Gopinathan Sankar
Article

Abstract

The formation ofβ-phase Bi2Mo2O9 catalyst from a precursor precipitate has been studied using thein situ combined XRD/QuEXAFS technique and DSC during calcination. Accordingly the precursor was observed to undergo a number of changes in both the molybdenum (VI) coordination and long-range ordering during this heating. Initially the two other forms of bismuth molybdate (α-andγ-phases) were observed to form from the poorly crystalline precursor at about 230°C, however, theβ-phase eventually crystallised after prolonged heating at 560°C.

Keywords

Bi2Mo2O9 catalyst XRD/QuEXAFS long-range 

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Copyright information

© Indian Academy of Sciences 2003

Authors and Affiliations

  1. 1.Davy Faraday Research LaboratoryThe Royal Institution of Great BritainLondonUK

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