Promoting effect of hydrogen spillover on pyridine migration adsorbed on Lewis acid sites in USY zeolite

Ryo Ueda, Keiichi Tomishige, Kaoru Fujimoto

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The effect of hydrogen spillover over Pd/SiO2 + USY on pyridine chemisorbed on acid sites of USY zeolite was investigated. According to FTIR measurement, pyridine adsorbed on Lewis acid sites migrated to Brønsted acid sites under hydrogen-flowing atmosphere. The rate of migration was drastically promoted by physically mixed Pd/SiO2 catalysts. This suggests that spilt-over hydrogen enhance the migration of pyridine adsorbed on Lewis acid sites.

Original languageEnglish
Pages (from-to)145-149
Number of pages5
JournalCatalysis Letters
Volume57
Issue number3
DOIs
Publication statusPublished - 1999 Feb
Externally publishedYes

Keywords

  • Brønsted and Lewis acid sites
  • Hybrid catalyst
  • Hydrogen spillover
  • Pyridine migration
  • Zeolite

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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