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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

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Title: 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
Authors: Yoshida, Hiroshi Browse this author →KAKEN DB
Igarashi, Naoya Browse this author
Fujita, Shin-ichiro Browse this author →KAKEN DB
Panpranot, Joongjai Browse this author
Arai, Masahiko Browse this author →KAKEN DB
Keywords: Titania
Crystallite size
Nanocrystal
Platinum
Hydrogenation
Issue Date: Feb-2015
Publisher: Springer
Journal Title: Catalysis Letters
Volume: 145
Issue: 2
Start Page: 606
End Page: 611
Publisher DOI: 10.1007/s10562-014-1404-4
Abstract: 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.
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s10562-014-1404-4
Type: article (author version)
URI: http://hdl.handle.net/2115/60177
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 荒井 正彦

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