Identification of vanadium species involved in sequential redox operation of VPO catalysts

Daxiang Wang, Harold H. Kung, Mark A. Barteau

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

A vanadyl pyrophosphate (VPO) catalyst was investigated for its sequential reduction and oxidation ability for butane oxidation, using a novel oscillating microbalance reactor. Correlation of the redox kinetics with the identities of the vanadium species obtained by potentiometric titration methods suggests that only the near-surface oxygen is readily available for the oxidation of butane; effective redox cycles can only occur between V5+ and V4+; accumulation of V3+ species represents one mode of catalyst deactivation.

Original languageEnglish
Pages (from-to)203-213
Number of pages11
JournalApplied Catalysis A: General
Volume201
Issue number2
DOIs
Publication statusPublished - Jul 10 2000

Keywords

  • Maleic anhydride
  • Oxidation of butane
  • Preparation
  • Redox properties
  • VPO catalysts

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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