Novel microstructures and reactivity for n-butane oxidation: advances and challenges in vapor phase alkane oxidation catalysis

• Published in: Journal of molecular catalysis. A, Chemical Vol. 220; no. 1; pp. 93 - 102
• Main Authors: Kourtakis, Kostantinos, Gai, Pratibha L
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 27-09-2004
• Subjects: Grafted catalysts; n-Alkane oxidation; Novel microstructures; P; Novel microstructures; Mo; Grafted catalysts; V; Bi; n-Alkane oxidation; O
• ISSN: 1381-1169; 1873-314X
• DOI: 10.1016/j.molcata.2004.03.053

The development of novel microstructures is reported for vanadium phosphorus oxide catalysts for the oxidation of
n-butane to maleic anhydride by grafting alkoxides of Bi and Mo on to pre-formed precursor.
The development of novel and improved microstructures is reported for vanadium phosphorus oxide (VPO) catalysts for the oxidation of
n-butane to maleic anhydride (MA) by grafting alkoxides of bismuth and molybdenum on to pre-formed vanadium phosphorus oxide precursor, VO(HPO
4)·0.5 H
2O. Depth profiling shows that the surface is molybdenum-rich, following a calcination and activation procedure which converts the catalyst precursor to the final, active phase(s). This novel composition profile in the catalyst may be responsible for the reactivity enhancements observed for this catalyst system. Catalysts prepared using bismuth or molybdenum containing precursors individually do not show a performance enhancement.