Selective hydrogenation of nitrobenzene to aniline in dense phase carbon dioxide over Ni/γ-Al2O3: Significance of molecular interactions

Meng, Xiangchun; Cheng, Haiyang; Akiyama, Yoshinari; Hao, Yufen; Qiao, Weibin; Yu, Yancun; Zhao, Fengyu; Fujita, Shin-ichiro; Arai, Masahiko

Selective hydrogenation of nitrobenzene to aniline in dense phase carbon dioxide over Ni/γ-Al2O3: Significance of molecular interactions

Meng, Xiangchun; Cheng, Haiyang; Akiyama, Yoshinari et al.

Journal of Catalysis, 2009, 264(1), 1-10

Permalink : https://hdl.handle.net/2115/38727

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アクセス権	open access
URI	https://hdl.handle.net/2115/38727
タイトル	Selective hydrogenation of nitrobenzene to aniline in dense phase carbon dioxide over Ni/γ-Al2O3: Significance of molecular interactions
著者	Meng, Xiangchun ; Cheng, Haiyang ; Akiyama, Yoshinari ; Hao, Yufen ; Qiao, Weibin ; Yu, Yancun ; Zhao, Fengyu ; Fujita, Shin-ichiro ; Arai, Masahiko
著者名 Meng, Xiangchun
著者名 Cheng, Haiyang
著者名 Akiyama, Yoshinari
著者名 Hao, Yufen
著者名 Qiao, Weibin
著者名 Yu, Yancun
著者名 Zhao, Fengyu
著者名 Fujita, Shin-ichiro
e-Rad_Researcher 60125490 著者名 Arai, Masahiko
言語	英語
キーワード	Nitrobenzene
	Aniline
	Nickel
	Hydrogenation
	Carbon dioxide
	Pressure effect
	Intermolecular interaction
発行日	2009-05-15
出版者	Elsevier Inc.
収録物名	Journal of Catalysis
巻(号)	264(1)
ページ	1-10
抄録	The selective hydrogenation of nitrobenzene (NB) over Ni/γ-Al2O3 catalysts was investigated using different media of dense phase CO2, ethanol, and n-hexane. In dense phase CO2, the total rate of NB hydrogenation was larger than that in organic solvents under similar reaction conditions; the selectivity to the desired product, aniline, was almost 100% over the whole conversion range of 0-100%. The phase behavior of the reactant mixture in/under dense phase CO2 was examined at reaction conditions. In situ high-pressure Fourier transform infrared measurements were made to study the molecular interactions of CO2 with the following reactant and reaction intermediates: NB, nitrosobenzene (NSB), and N-phenylhydroxylamine (PHA). Dense phase CO2 strongly interacts with NB, NSB, and PHA, modifying the reactivity of each species and contributing to positive effects on the reaction rate and the selectivity to aniline. A possible reaction pathway for the hydrogenation of NB in/under dense phase CO2 over Ni/γ-Al2O3 is also proposed.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0021-9517
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.jcat.2009.03.008