Preferential oxidation of carbon monoxide in excess hydrogen over platinum catalysts supported on different-pore-sized mesoporous silica

Huang, Shengjun; Hara, Kenji; Okubo, Yasuhiro; Yanagi, Masaaki; Nambu, Hironobu; Fukuoka, Atsushi

Preferential oxidation of carbon monoxide in excess hydrogen over platinum catalysts supported on different-pore-sized mesoporous silica

Huang, Shengjun; Hara, Kenji; Okubo, Yasuhiro et al.

Applied Catalysis A : General, 2009, 365(2), 268-273

Permalink : https://hdl.handle.net/2115/39398

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アクセス権	open access
URI	https://hdl.handle.net/2115/39398
タイトル	Preferential oxidation of carbon monoxide in excess hydrogen over platinum catalysts supported on different-pore-sized mesoporous silica
著者	Huang, Shengjun ; Hara, Kenji ; Okubo, Yasuhiro ; Yanagi, Masaaki ; Nambu, Hironobu ; Fukuoka, Atsushi
著者名 Huang, Shengjun
著者名 Hara, Kenji
著者名 Okubo, Yasuhiro
著者名 Yanagi, Masaaki
著者名 Nambu, Hironobu
e-Rad_Researcher 80189927 著者名 Fukuoka, Atsushi
言語	英語
キーワード	Mesoporous silica
	Pore size
	PROX
	Pt catalysts
発行日	2009-08-31
出版者	Elsevier B.V.
収録物名	Applied Catalysis A : General
巻(号)	365(2)
ページ	268-273
抄録	Preferential oxidation (PROX) of carbon monoxide in excess hydrogen has been studied on low Pt loading (0.5-1 wt%) catalysts supported on a series of FSM-type mesoporous silica materials. A support effect has been observed, in which the catalytic activities are closely related with the pore diameter of the support, despite their similar specific surface areas. Pt nanoparticles supported on mesoporous silica with 4.0 nm pore diameter possess the highest CO conversion over a wide range of reaction temperature, i.e. ca. 100% CO conversion in 298-423 K. As a comparison, the Pt particles in small pore supports (1.8 nm) exhibit poor performance under the same reaction conditions, which is barely comparable to the Pt catalysts on amorphous silica. The discrepancy in the mesoporous silica is proposed to be related with the different activities of surface silanols in various supports.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0926-860X
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.apcata.2009.06.023