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Metal-acid site synergistic catalysis in Ru–ZrO2 toward selective hydrogenation of benzene to cyclohexene

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Abstract

Ruthenium-based catalysts are one of the most promising candidates toward selective hydrogenation of benzene. In this work, we synthesized a novel core–shell catalyst by coating porous B-doped ZrO2 on the surface of Ru/ZrO2 particles (denoted as Ru/ZrO2@ZrO2-B(x%)), in which the hydrogen dissociation occurs on the inner surface of metal Ru and the acid site of the exterior ZrO2-B(x%) serves as the adsorption site for benzene. The Ru/ZrO2@ZrO2-B(5%) sample demonstrates the optimal synergistic catalysis between metal Ru and the weak/medium-strong Lewis acid site of the ZrO2-B(5%) layer, which promotes the activated adsorption of benzene and desorption of cyclohexene. Therefore, it exhibits the best catalytic performance (benzene conversion: 53.1%; cyclohexene selectivity: 58.8%) without using any additives.

Graphical abstract: Metal-acid site synergistic catalysis in Ru–ZrO2 toward selective hydrogenation of benzene to cyclohexene

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Publication details

The article was received on 06 Jul 2017, accepted on 19 Nov 2017 and first published on 20 Nov 2017


Article type: Paper
DOI: 10.1039/C7CY01351E
Citation: Catal. Sci. Technol., 2018, Advance Article
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    Metal-acid site synergistic catalysis in Ru–ZrO2 toward selective hydrogenation of benzene to cyclohexene

    D. Rao, X. Xue, G. Cui, S. He, M. Xu, W. Bing, S. Shi and M. Wei, Catal. Sci. Technol., 2018, Advance Article , DOI: 10.1039/C7CY01351E

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