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 language | English |
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Pages (from-to) | 69-76 |
Number of pages | 8 |
Journal | Studies in Surface Science and Catalysis |
Volume | 138 |
DOIs | |
Publication status | Published - 2001 Jan 1 |
Externally published | Yes |
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