Zy. Xue et Gl. Schrader, Transient FTIR studies of the reaction pathway for n-butane selective oxidiation over vanadyl pyrophosphate, J CATALYSIS, 184(1), 1999, pp. 87-104
New information has been provided about the reaction pathway for n-butane p
artial oxidation to maleic anhydride over vanadyl pyrophosphate (VPO) catal
ysts using FTIR spectroscopy under transient conditions. Adsorption studies
of n-butane, 1,3-butadiene, and related oxygenates were performed to gain
information about reaction intermediates. n-Butane was found to adsorb on t
he VPO catalyst to form olefinic species at low temperatures. Unsaturated,
noncyclic carbonyl species were determined to be precursors to maleic anhyd
ride. (C) 1999 Academic Press.