Catalytic Performance of Noble Metals Supported on Alumina-modified Silica Gel for Hydrodesulfurization Reaction

doi:info:doi/10.1627/jpi.49.49

Catalytic Performance of Noble Metals Supported on Alumina-modified Silica Gel for Hydrodesulfurization Reaction 利用統計を見る

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アイテムタイプ	学術雑誌論文 / Journal Article.
言語	英語
キーワード	Hydrodesulfurization, Thiophene, Noble metal catalyst, Alumina modification, Bifunctional catalysis
その他（別言語等）のタイトル	アルミナ修飾シリカゲル担持貴金属の水素化脱硫反応に対する触媒特性
著者	KANDA Yasuharu ( 研究者リゾルバーID: 1000070447085 ) KOBAYASHI Takao UEMICHI Yoshio ( 研究者リゾルバーID: 1000090168659 ) SUGIOKA Masatoshi ( 研究者リゾルバーID: 1000080001329 )
著者（別表記）	神田康晴小林隆夫上道芳夫杉岡正敏
室蘭工業大学研究者データベースへのリンク	神田康晴（KANDA Yasuharu）上道芳夫（UEMICHI Yoshio）
抄録	The catalytic activities and properties of noble metals (Pt, Pd, Rh, Ru) supported on silica gel (SiO_2) and alumina-modified silica gel (Al_2O_3-SiO_2) were investigated for the hydrodesulfurization of thiophene. Al_2O_3-SiO_2 was prepared by an impregnation method using aluminum nitrate (Al(NO_3)_3·9H_2O) aqueous solution. Pt/8 wt%Al_2O_3-SiO_2 catalyst showed the highest activity for hydrodesulfurization of thiophene among various supported noble metal catalysts and this activity was higher than that of commercial CoMo/Al_2O_3 hydrodesulfurization catalyst. The sulfur tolerance of noble metal/SiO_2 was enhanced by Al_2O_3 modification of SiO_2 and Pt/8 wt%Al_2O_3-SiO_2 catalyst showed the highest sulfur tolerance among the supported noble metal catalysts. Pt/8 wt%Al_2O_3-SiO_2 catalyst had high hydrogenating ability for unsaturated C_4 hydrocarbons formed in the hydrodesulfurization of thiophene. The catalysts were characterized by 2-propanol dehydration, cumene cracking, XRD, H_2 adsorption and FT-IR. Dispersion of Pt on 8 wt%Al_2O_3-SiO_2 was remarkably higher than that on SiO_2 and the particle size of Pt on 8 wt%Al_2O_3-SiO_2 was the lowest among the supported noble metal catalysts. The acidity of 8 wt%Al_2O_3-SiO_2 was higher than that of SiO_2. Furthermore, Brönsted acid sites were present on 8 wt%Al_2O_3-SiO_2. FT-IR spectroscopy of thiophene adsorbed on 8 wt%Al_2O_3-SiO_2 support indicated that the thiophene molecule interacts with the Brönsted acid site on 8 wt%Al_2O_3-SiO_2. The activity of the double-layer (Pt/SiO_2 + 8 wt%Al_2O_3-SiO_2) catalyst obtained experimentally was higher than that calculated. This suggests that spillover hydrogen was present on Pt/Al_2O_3-SiO_2 in the hydrodesulfurization of thiophene. Both the Brönsted acid sites of Al_2O_3-SiO_2 and the Pt particles in the Pt/Al_2O_3-SiO_2 catalyst act as active sites for the hydrodesulfurization of thiophene.
雑誌名	Journal of the Japan Petroleum Institute
巻	49
号	2
ページ	49 - 56
発行年	2006-05-01
出版者	石油学会
出版者版へのリンク	10.1627/jpi.49.49
DOI	info:doi/10.1627/jpi.49.49
論文ID（NAID）	http://ci.nii.ac.jp/naid/10020515930
日本十進分類法	570
ISSN	13468804
書誌レコードID	AA11590615 AA12022753
権利	Copyright 2006 石油学会　ダウンロードを含むこの著作物の利用は、著作権法の私的使用及び引用の範囲に限り認められます。その範囲外の利用については、石油学会の承諾が必要です。
著者版フラグ	publisher
フォーマット	application/pdf

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Catalytic Performance of Noble Metals Supported on Alumina-modified Silica Gel for Hydrodesulfurization Reaction 利用統計を見る

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