Influence of Crystallite Size of TiO2 Supports on the Activity of Dispersed Pt Catalysts in Liquid-Phase Selective Hydrogenation of 3-Nitrostyrene, Nitrobenzene, and Styrene

Yoshida, Hiroshi; Igarashi, Naoya; Fujita, Shin-ichiro; Panpranot, Joongjai; Arai, Masahiko

Influence of Crystallite Size of TiO2 Supports on the Activity of Dispersed Pt Catalysts in Liquid-Phase Selective Hydrogenation of 3-Nitrostyrene, Nitrobenzene, and Styrene

Yoshida, Hiroshi; Igarashi, Naoya; Fujita, Shin-ichiro et al.

Catalysis Letters, 2015, 145(2), 606-611

Permalink : https://hdl.handle.net/2115/60177

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アクセス権	open access
URI	https://hdl.handle.net/2115/60177
タイトル	Influence of Crystallite Size of TiO2 Supports on the Activity of Dispersed Pt Catalysts in Liquid-Phase Selective Hydrogenation of 3-Nitrostyrene, Nitrobenzene, and Styrene
著者	Yoshida, Hiroshi ; Igarashi, Naoya ; Fujita, Shin-ichiro ; Panpranot, Joongjai ; Arai, Masahiko
e-Rad_Researcher 20027410 著者名 Yoshida, Hiroshi
著者名 Igarashi, Naoya
e-Rad_Researcher 80156869 著者名 Fujita, Shin-ichiro
著者名 Panpranot, Joongjai
e-Rad_Researcher 60125490 著者名 Arai, Masahiko
言語	英語
キーワード	Titania
	Crystallite size
	Nanocrystal
	Platinum
	Hydrogenation
発行日	2015-02
出版者	Springer
収録物名	Catalysis Letters
巻(号)	145(2)
ページ	606-611
抄録	Supported Pt catalysts were prepared using several kinds of TiO2 supports different in the crystallite size in the range of 10-500 nm and their catalytic activity was tested for the liquid-phase hydrogenation of 3-nitrostyrene, nitrobenzene, and styrene. With Pt on smaller TiO2 crystallites (nanocrystals), the selectivity to vinylaniline was improved in the hydrogenation of 3-nitrostyrene (regioselective hydrogenation) and the selectivity to aniline was promoted in the hydrogenation of a mixture of nitrobenzene and styrene (chemoselective hydrogenation). The effects of TiO2 crystallite size were discussed on the basis of the results of turnover frequency and FTIR of CO adsorbed on dispersed Pt particles. Low coordinated and/or electron-rich Pt sites should be formed on the surface of nanocrystal TiO2 supports. Nanocrystal TiO2 support is an important factor for controlling and improving the catalytic performance of dispersed Pt particles.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	The final publication is available at Springer via http://dx.doi.org/10.1007/s10562-014-1404-4
PISSN	1011-372X
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s10562-014-1404-4