Citation: Yu Zhang, Chenliang Ye, Cuili Guo, Changna Gan, Xinmeng Tong. In₂O₃-modified Cu/SiO₂ as an active and stable catalyst for the hydrogenation of methyl acetate to ethanol[J]. Chinese Journal of Catalysis, ;2018, 39(1): 99-108. doi: 10.1016/S1872-2067(17)62932-2 shu

In₂O₃-modified Cu/SiO₂ as an active and stable catalyst for the hydrogenation of methyl acetate to ethanol

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received Date: 24 July 2017
Revised Date: 9 October 2017

A series of indium oxide-modified Cu/SiO₂ catalysts were synthesized and used to produce ethanol via methyl acetate hydrogenation. In-Cu/SiO₂ catalyst containing 1.0 wt% In₂O₃ exhibited the best catalytic activity and stability. The physicochemical properties of the synthesized catalysts were investigated using several characterization methods and the results showed that introducing suitable indium to Cu/SiO₂ increased the copper dispersion, diminished the copper crystallite size, and enriched the surface Cu⁺ concentration. Furthermore, the Cu/SiO₂ catalyst gradually deactivated during the stability test, which was mainly attributed to copper sintering and the valence change in surface copper species. In contrast, indium addition can inhibit the thermal transmigration and accumulation of copper nanoparticles to stabilize the catalyst.
- Methyl acetate,
- Hydrogenation,
- Indium,
- Cu/SiO₂ catalyst,
- Ethanol
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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

In₂O₃-modified Cu/SiO₂ as an active and stable catalyst for the hydrogenation of methyl acetate to ethanol