Abstract
Abstract The vapor-phase oxidation of various kinds of olefins, acids, aldehydes, etc. was carried out in a flow system over a series of MoO3–Bi2O3–P2O5 catalysts with different Bi/Mo ratios (P/Mo=0.2 atomic ratio) under fixed reaction conditions, in order to elucidate how the oxidation of these compounds is affected by the Bi2O3 content in the catalysts. The oxidation activity for these compounds varies in different individual manners as the Bi2O3 content increases. The results were interpreted successfully on the basis of the acid-base nature of the reactant and the catalyst. Then, the relationship between the character of the partial oxidations and the nature of the catalysts was discussed.
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