Graphene-Modified Ru Nanocatalyst for Low-Temperature Hydrogenation of Carbonyl Groups

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• 作者：Jingjing Tan ; Jinglei Cui ; Xiaojing Cui ; Tiansheng Deng ; Xianqing Li ; Yulei Zhu ; Yongwang Li
• 刊名：ACS Catalysis
• 出版年：2015
• 出版时间：December 4, 2015
• 年：2015
• 卷：5
• 期：12
• 页码：7379-7384
• 全文大小：384K
• ISSN：2155-5435

文摘

Low-temperature efficient hydrogenation of C鈺怬 bonds in various compounds, which is one of the most important processes for producing fuels and chemicals, is of fundamental interest but remains a significant challenge. The primary problem is a lack of heterogeneous catalyst systems that are highly active at ambient or low temperatures. This paper describes an efficient strategy for designing a low-temperature hydrogenation catalyst. Ru nanoparticles supported on reduced graphene oxide (Ru/RGO) show remarkable efficiency for hydrogenation of levulinic acid into 纬-valerolactone at temperatures as low as 鈭?0 掳C. The catalyst is also highly active toward low-temperature hydrogenation of C鈺怬 bonds in other carbonyl compounds into C鈥揙H bonds, such as furfural, propionaldehyde, 2-pentanone, hydroxyacetone, acetone, acetophenone, cyclohexanone, and benzophenone. X-ray photoelectron spectroscopy and in situ Fourier transform infrared demonstrate that the electron transfer between Ru⁰ and RGO leads to the formation of an electron-rich state of Ru⁰ nanoparticles that are highly effective for activating C鈺怬 bonds.