Selective oxidation of propene on bismuth molybdate and mixed oxides of tin and antimony and of uranium and antimony

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Abstract
Propene +18O2 reactions have been studied in a static reaction system on bismuth molybdate and mixed oxides of tin and antimony and of uranium and antimony. The [16O]acrolein content of the total acrolein formed and the proportion of 16O in the oxygen of the carbon dioxide by-product have been determined. The results indicate that for each catalyst the lattice is the only direct source of the oxygen in the aldehyde, and that lattice and/or gas phase oxygen is used in carbon dioxide formation. Oxygen anion mobility appears to be greater in the molybdate catalyst than in the other two.