| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7921932 | Materials Chemistry and Physics | 2018 | 12 Pages |
Abstract
Mesoporous Mo-SiO2 and SiO2 synthesized by sol-gel method were impregnated with Pt precursor in order to obtain Pt/Mo-SiO2 and Pt/SiO2 catalysts. The catalysts were tested in cyclohexane (CH) and methylcyclohexane (MCH) dehydrogenation reaction and characterized using different techniques. For MCH dehydrogenation, the catalysts' specific initial activity followed the trend: Pt/Mo-SiO2â¯>â¯Mo-SiO2â¯>â¯Pt/SiO2. The synergy effect between Pt and Mo did not occur due to the large contribution of acidity of partially reduced Mo-SiO2 sample to its catalytic response and to the absence of H2 spillover for Pt/Mo-SiO2. Unlike MCH dehydrogenation, the synergy between Pt and Mo was observed for CH dehydrogenation over Pt/Mo-SiO2 catalyst. For both Pt/SiO2 and Pt/Mo-SiO2, the catalyst bifunctionality (metal and acid functions) and the H2 spillover effect were more important for catalyst behavior in CH dehydrogenation than in MCH dehydrogenation.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
N. Boufaden, B. Pawelec, J.L.G. Fierro, R. Guil López, R. Akkari, M. Said Zina,