Selective Ammoxidation of Propane on Vanadoaluminophosphate Catalysts

Akira Miyamoto, Yasumasa Iwamoto, Hirokazu Matsuda, Tomoyuki Inui

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

Vanadoaluminophosphate(VAPO) crystals having the AlPO-5 structure were synthesized by the rapid crystallization method, and their physical properties and catalytic performance in the ammoxidation of propane were compared with those of vanadosilicate(V-silicate) having the pentasil structure. It was shown that vanadium ions are incorporated more in the AlPO-5 crystal than in the silicate crystal. ESR signal of V4+ indicated that the vanadium ion was atomically dispersed in VAPO crystal and has the redox property to change its oxidation state between V4+ and V5+. Although the vanadium ion in the V-silicate was also atomically dispersed, ESR and UV-visible measurements suggested that V4+ state is more stable in VAPO than in V-silicate. In accordance with the difference between VAPO and V-silicate, VAPO was more active and selective than V-silicate for the ammoxidation of propane; the selectivity to acrylonitrile attained 33% for VAPO.

Original languageEnglish
Pages (from-to)1233-1242
Number of pages10
JournalStudies in Surface Science and Catalysis
Volume49
Issue numberC
DOIs
Publication statusPublished - 1989 Jan 1

ASJC Scopus subject areas

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

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