VAPOUR-PHASE OXIDATION OF 3- AND 4-METHYLPYRIDINES ON VANADIUM OXIDE CATALYSTS MODIFIED BY TITANIUM AND CHROMIUM OXIDES

Abstract

The catalytic effect of the compositions V2O5·4TiO2, 2V2O5·Cr2O3 and 2V2O5·4TiO2·Cr2O3 in vapour-phase oxidation of 3- and 4-methylpyridines has been studied. It was found that with simultaneous modification of vanadium pentoxide with titanium (IV) and chromium (III) oxides, a synergistic effect is observed, manifested in a significant increase in the yield of isonicotinic acid and a decrease in the optimum temperature of its formation in the case of a three-component catalyst, compared to twocomponent one.

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