@article{oai:muroran-it.repo.nii.ac.jp:00006569,
 author = {KANDA,  Yasuharu and 神田, 康晴 and 小林, 隆夫 and KOBAYASHI, Takao and UEMICHI,  Yoshio and 上道, 芳夫 and NAMBA, Seitaro and 杉岡,  正敏 and SUGIOKA, Masatoshi},
 journal = {Applied catalysis. A, General},
 month = {Jul},
 note = {application/pdf, The catalytic activities and properties of platinum supported on siliceous MCM-41 and Al-modified MCM-41, such as Al-incorporated MCM-41 (AlMCM-41) and alumina-modified MCM-41 (Al_2O_3-MCM-41), for the hydrodesulfurization (HDS) of thiophene were investigated. Al_2O_3-MCM-41 was prepared by an impregnation method using aluminum nitrate (Al(NO_3)_3·9H_2O) aqueous solution. Pt/Al_2O_3-MCM-41 catalyst showed high and stable activity for HDS of thiophene and this activity was remarkably higher than that of a commercial CoMo/Al_2O_3 HDS catalyst. The catalysts were characterized by XRD, hydrogen adsorption, ammonia-TPD, 2-propanol dehydration, cumene cracking and FT-IR. Dispersion of platinum on Al_2O_3-MCM-41 was remarkably higher than on MCM-41 or on AlMCM-41. It was revealed that the acidity of Al_2O_3-MCM-41 was higher than that of MCM-41 or of AlMCM-41. Furthermore, it was observed that there exist Brønsted acid sites on Al-modified MCM-41. FT-IR spectra of thiophene adsorbed on Al-modified MCM-41 support indicates that thiophene molecules interact with Brønsted acid sites on Al-modified MCM-41. It was found that the HDS activity of Pt/quartz mixed mechanically with Al-modified MCM-41 catalyst was higher than that calculated. This suggests that there exists spillover hydrogen on supportedPt catalysts in the HDS of thiophene. Results revealed that the high activity of Pt/Al_2O_3-MCM-41 catalyst for HDS reaction is due to good harmony of high dispersion of Pt particles and Brønsted acidity of the support.},
 pages = {111--118},
 title = {Effect of aluminum modification on catalytic performance of Pt supported on MCM-41 for thiophene hydrodesulfurization},
 volume = {308},
 year = {2006},
 yomi = {カンダ, ヤスハル and コバヤシ, タカオ and ウエミチ, ヨシオ and スギオカ, マサトシ}
}