Abstract

Some aspects of the reaction mechanism of n-butane and n-pentane selective oxidation on vanadyl pyrophosphate obtained in transient response studies using the TAP (Temporal Analysis of Products) reactor system are presented. Key features include the evolution of the surface properties of the catalyst during alkane oxidation, the role of organic adspecies and different types of reactive oxygen in the reaction mechanism and their influence on the surface microkinetics, the relationship between surface lifetime of adsorbed species and selectivity, and the role of organic precursors in phthalic anhydride formation from n-pentane.

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