Issue 9, 1988

Nature of the β-phase of bismuth molybdate

Abstract

Infrared and Raman spectroscopies, X-ray diffraction and d.s.c. analysis have confirmed that the β-phase (B mixture) is different from an equimolar mixture of the α- and γ-phase (A mixture) of bismuth molybdate. A comparison of the catalytic properties between A and B mixtures in the partial oxidation of propene and the dehydrogenation–dehydration of isopropanol also confirms this difference. The β-phase is a defined phase of the bismuth molybdate system and is metastable at room temperature, but is stable enough to be used in catalytic tests. The enthalpy of transformation of mixture A to mixture B at 560 °C was found to be 6330 J mol–1.

Article information

Article type
Paper

J. Chem. Soc., Faraday Trans. 1, 1988,84, 3169-3174

Nature of the β-phase of bismuth molybdate

M. M. El Jamal, M. Forissier and A. Auroux, J. Chem. Soc., Faraday Trans. 1, 1988, 84, 3169 DOI: 10.1039/F19888403169

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