Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 3169 - 3174 (1988)
Update date:2022-08-25
Topics:
Jamal, Mouhiedine M. El
Forissier, Michel
Auroux, Aline
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-phases (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 deg C was found to be 6330 J mol-1.
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