期刊
CATALYSIS LETTERS
卷 146, 期 1, 页码 54-60出版社
SPRINGER
DOI: 10.1007/s10562-015-1623-3
关键词
Organic hydride; Methylcyclohexane; Dehydrogenation; Pt/TiO2; Electronic state
资金
- Cross-ministerial Strategic Innovation Promotion Program (SIP) Japan
- Grants-in-Aid for Scientific Research [26709059, 26289306] Funding Source: KAKEN
Methylcyclohexane (MCH) is expected as a hydrogen carrier. Dehydrogenation of MCH was conducted over supported Pt catalysts at 623 K. Pt/TiO2 showed high stability for dehydrogenation and good resistance for coke formation. The partial pressure dependence of MCH, toluene, and H-2 was investigated for Pt/TiO2 and Pt/Al2O3 catalysts, which showed different tendencies for toluene partial pressure. The reaction order of toluene partial pressure for Pt/TiO2 was almost zero, but that for Pt/Al2O3 was a negative value. Toluene inhibited the Pt/Al2O3 catalytic activity, but that of Pt/TiO2 was unaffected. The SMSI effect was confirmed on Pt/TiO2 by CO chemisorption measurement. Pt on TiO2 became an electron-rich state compared to Pt-0 because of the electron donation from TiOx, and the toluene adsorption to Pt on TiO2 was weakened. [GRAPHICS] .
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