Oxidation states of vanadium in V-P-O oxidation catalysts 31P NMR by spin-echo mapping

Juan Li, M. E. Lashier, Glenn L Schrader, Bernard C. Gerstein

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

The oxidation state of vanadium in V-P-O catalysts before and after use has been examined using 31P NMR spin echo mapping. The presence of V4+ and V5+ species could be detected for β-VOPO4, (VO)2P2O7 and industrially-related materials with P/V=0.9, 1.0, and 1.1. Magnetic susceptibility measurements were used to confirm the presence of para-magnetic vanadium in most catalysts which had been exposed to n-butane or 1-butene. Several models of active V-P-O catalysts have been offered previously which can be related to the NMR results.

Original languageEnglish (US)
Pages (from-to)83-95
Number of pages13
JournalApplied Catalysis
Volume73
Issue number1
DOIs
StatePublished - May 30 1991
Externally publishedYes

Fingerprint

Vanadium
Nuclear magnetic resonance
Oxidation
Catalysts
Butane
Magnetic susceptibility
Butenes

Keywords

  • catalyst characterization (P NMR)
  • n-butane
  • oxidation catalysts
  • oxidation states
  • vanadium-phosphorus oxides.

Cite this

Oxidation states of vanadium in V-P-O oxidation catalysts 31P NMR by spin-echo mapping. / Li, Juan; Lashier, M. E.; Schrader, Glenn L; Gerstein, Bernard C.

In: Applied Catalysis, Vol. 73, No. 1, 30.05.1991, p. 83-95.

Research output: Contribution to journalArticle

Li, Juan ; Lashier, M. E. ; Schrader, Glenn L ; Gerstein, Bernard C. / Oxidation states of vanadium in V-P-O oxidation catalysts 31P NMR by spin-echo mapping. In: Applied Catalysis. 1991 ; Vol. 73, No. 1. pp. 83-95.
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