Reactive lattice oxygen sites for C4 hydrocarbon selective oxidation over β-VOPO4

M. E. Lashier, Glenn L Schrader

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The role of lattice oxygen species in the catalytic oxidation of n-butane to maleic anhydride has been investigated using β-VOP04 labeled with 180. The catalyst was prepared by stoichiometric reaction of (VO)2P207 with 1802 using solid state preparation techniques. The β-VOPO 7 218O 1 2 was characterized using laser Raman and Fourier transform infrared spectroscopies: preferential incorporation at P-O-V sites was observed. A pulse reactor was used to react n-butane, 1-butane, 1,3-butadiene, furan, γ-butyrolactone, and maleic anhydride with the catalyst in the absence of gas-phase O2. Incorporation of 18O into the products was monitored by mass spectrometry. Specific lattice oxygen sites could be associated with the reaction pathways for selective or nonselective oxidation. The results of this study also indicate that the initial interaction of n-butane with β-VOPO4 is fundamentally different from the initial interaction of olefins or oxygenated species. The approach used in this research-referred to as Isotopic Reactive-Site Mapping-is a potentially powerful method for probing the reactive lattice sites of other selective oxidation catalysts.

Original languageEnglish (US)
Pages (from-to)113-125
Number of pages13
JournalJournal of Catalysis
Volume128
Issue number1
DOIs
StatePublished - 1991
Externally publishedYes

Fingerprint

Butane
butanes
Hydrocarbons
hydrocarbons
Maleic Anhydrides
Oxygen
Oxidation
oxidation
Maleic anhydride
oxygen
anhydrides
catalysts
Catalysts
Raman lasers
Catalytic oxidation
furans
Alkenes
butadiene
Butadiene
alkenes

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Reactive lattice oxygen sites for C4 hydrocarbon selective oxidation over β-VOPO4. / Lashier, M. E.; Schrader, Glenn L.

In: Journal of Catalysis, Vol. 128, No. 1, 1991, p. 113-125.

Research output: Contribution to journalArticle

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AB - The role of lattice oxygen species in the catalytic oxidation of n-butane to maleic anhydride has been investigated using β-VOP04 labeled with 180. The catalyst was prepared by stoichiometric reaction of (VO)2P207 with 1802 using solid state preparation techniques. The β-VOPO 7 218O 1 2 was characterized using laser Raman and Fourier transform infrared spectroscopies: preferential incorporation at P-O-V sites was observed. A pulse reactor was used to react n-butane, 1-butane, 1,3-butadiene, furan, γ-butyrolactone, and maleic anhydride with the catalyst in the absence of gas-phase O2. Incorporation of 18O into the products was monitored by mass spectrometry. Specific lattice oxygen sites could be associated with the reaction pathways for selective or nonselective oxidation. The results of this study also indicate that the initial interaction of n-butane with β-VOPO4 is fundamentally different from the initial interaction of olefins or oxygenated species. The approach used in this research-referred to as Isotopic Reactive-Site Mapping-is a potentially powerful method for probing the reactive lattice sites of other selective oxidation catalysts.

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