Ultrafine Nanoparticle‐Supported Ru Nanoclusters with Ultrahigh Catalytic Activity |
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| Authors: | Lihua Zhu Yingying Jiang Jinbao Zheng Nuowei Zhang Changlin Yu Yunhua Li Chih‐Wen Pao Jeng‐Lung Chen Chuanhong Jin Jyh‐Fu Lee Chuan‐Jian Zhong Bing H Chen |
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| Affiliation: | 1. Department of Chemical and Biochemical Engineering, National Engineering Laboratory for Green Productions of Alcohols‐Ethers‐Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China;2. School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiang Xi, China;3. Department of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, China;4. National Synchrotron Radiation Research Center, Hsinchu, Taiwan;5. Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA |
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| Abstract: | The design of an ideal heterogeneous catalyst for hydrogenation reaction is to impart the catalyst with synergetic surface sites active cooperatively toward different reaction species. Herein a new strategy is presented for the creation of such a catalyst with dual active sites by decorating metal and metal oxide nanoparticles with ultrafine nanoclusters at atomic level. This strategy is exemplified by the design and synthesis of Ru nanoclusters supported on Ni/NiO nanoparticles. This Ru‐nanocluster/Ni/NiO‐nanoparticle catalyst is shown to exhibit ultrahigh catalytic activity for benzene hydrogenation reaction, which is 55 times higher than Ru–Ni alloy or Ru on Ni catalysts. The nanoclusters‐on‐nanoparticles are characterized by high‐resolution transmission electron microscope, Cs‐corrected high angle annular dark field‐scanning transmission electron microscopy, elemental mapping, high‐sensitivity low‐energy ion scattering, and X‐ray absorption spectra. The atomic‐scale nanocluster–nanoparticle structural characteristics constitute the basis for creating the catalytic synergy of the surface sites, where Ru provides hydrogen adsorption and dissociation site, Ni acts as a “bridge” for transferring H species to benzene adsorbed and activated at NiO site, which has significant implications to multifunctional nanocatalysts design for wide ranges of catalytic reactions. |
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| Keywords: | catalytic hydrogenation metal nanoparticles metal oxide nanoparticles multifunctional sites Ru nanoclusters catalysis |
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