Comparison of hydrogen spillover effect between cumene cracking and n-pentane hydroisomerization over Pt/SiO2+H-Beta using pulse reaction method

Toshiaki Kusakari, Keiichi Tomishige, Kaoru Fujimoto

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of spilt-over hydrogen on the catalytic activity of physically mixed catalyst composed of Pt/SiO2 and H-Beta for cumene hydrocracking and n-pentane hydroisomerization has been investigated by using pulse reaction method. The stable activity was observed under hydrogen atmosphere in two reactions over Pt/SiO2 + H-Beta. Under this reaction condition, split-over hydrogen species is formed and inhibited the catalytic deactivation. The reaction order with respect to hydrogen in cumene cracking was negative. On the other hand, reaction order in n-pentane hydroisomerization was much dependent on the hydrogen pressure range. Under low hydrogen pressure, The positive effect of hydrogen on the catalytic activity in n-pentane hydroisomerization was observed.

Original languageEnglish
Pages (from-to)69-76
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume138
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

Keywords

  • Bifunctional catalyst
  • Cumene cracking
  • Hydrogen spillover
  • Physical mixture catalyst
  • Zeolite
  • n-pentane hydroisomerization

ASJC Scopus subject areas

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

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