Supported rhenium nanoparticle catalysts for acceptorless dehydrogenation of alcohols: structure-activity relationship and mechanistic studies

Kon, Kenichi; Onodera, Wataru; Toyao, Takashi et al.

Catalysis science and technology, 2016, 6(15), 5864-5870

Permalink : https://hdl.handle.net/2115/66972

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アクセス権
open access
URI
https://hdl.handle.net/2115/66972
タイトル
Supported rhenium nanoparticle catalysts for acceptorless dehydrogenation of alcohols: structure-activity relationship and mechanistic studies
著者
Kon, Kenichi ; Onodera, Wataru ; Toyao, Takashi ; Shimizu, Ken-ichi
著者名
Kon, Kenichi
著者名
Onodera, Wataru
e-Rad_Researcher
80775388
著者名
Toyao, Takashi
e-Rad_Researcher
60324000
著者名
Shimizu, Ken-ichi
言語
英語
発行日
2016-08-07
出版者
Royal Society of Chemistry
収録物名
Catalysis science and technology
巻(号)
6(15)
ページ
5864-5870
抄録
Al2O3-supported Re with different oxidation states and Re-0 metal nanoparticles on various supports are prepared, characterized and tested for the dehydrogenation of 2-octanol. The activity of Re/Al2O3 increases with the fraction of metallic Re. The activity of metallic Re depends on the support oxides, and the support with moderate electronegativity (Al2O3) gives the highest turnover frequency (TOF) per surface Re-0 site. Re/Al2O3 is effective for acceptorless dehydrogenation of various aliphatic secondary alcohols to ketones. The kinetic isotope effects on the dehydrogenation of 2-propanol show that dissociation of the alpha-C-H bond of 2-propanol is the rate-limiting step. The IR study of the reaction of gas phase 2-propanol over the Re/Al2O3 surface shows that the acid-base pair site of Al2O3 is responsible for the O-H dissociation of 2-propanol. The structural requirements are discussed on the basis of the mechanistic results.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
2044-4753
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1039/c6cy00252h