Solid-State Polymerization of Molecular Metal Oxide Clusters: Aluminum 12-Tungstophosphate

A. R. Siedle, Myles L. Brostrom, Thomas E. Wood, David C. Koskenmaki, Bernard Montez, Eric Oldfield

Research output: Contribution to journalArticle


The molecular metal oxide cluster compound [Al(H2O)6]PW12O40.4H2O reversibly dehydrates at 375 °C. Upon heating to ≥550 °C, irreversible conversion to AlPO4 and cubic W03(a = 7.521 (5) A) occurs in a solid-state process likened to polymerization. The reaction has been studied by thermogravimetric analysis, differential scanning calorimetry, X-ray and electron diffraction as well as 27A1 and 31P solid-state NMR. It is proposed as a model for synthesis of ceramics by sol-gel methods.

Original languageEnglish (US)
Pages (from-to)1665-1669
Number of pages5
JournalJournal of the American Chemical Society
Issue number5
StatePublished - Mar 1989


ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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