Role of Acidic Sites on Metal Phosphates in the Catalytic Oxidation of iso-Butane

Y. Takita, K. Kurosaki, T. Ito, Y. Mizuhara, Tatsumi Ishihara

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Catalysis by lanthanide phosphates (LnPs) were studied. Only LaPO4 and CePO4 are effective catalysts in various LnPs for oxidative dehydrogenation of iso-butane. Using a iso-butane rich reactant gas mixture, the selectivity of iso-butene showed 79-86% at 450-550°C. LnPs have no adsorbed oxygen species and the surface lattice oxygen reacted with hydrogen at >200°C. The activity of the lattice oxygen not affected the catalytic activity. A linear relationship has observed between the acid amount and the catalytic activity of the catalysts. This suggests that acidic sites of intermediate strength play a key role in the oxidative dehydrogenation of iso-butane.

Original languageEnglish
Pages (from-to)441-446
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume90
Issue numberC
DOIs
Publication statusPublished - Jan 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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