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The Development of Yolk–Shell‐Structured Pd&ZnO@Carbon Submicroreactors with High Selectivity and Stability |
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| Authors: | Hao Tian Fei Huang Yihan Zhu Shaomin Liu Yu Han Mietek Jaroniec Qihua Yang Hongyang Liu Gao Qing Max Lu Jian Liu |
| Affiliation: | 1. State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China;2. Department of Chemical Engineering, Curtin University, Perth, WA, Australia;3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China;4. Advanced Membranes and Porous Materials Center, Chemical and Life Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia;5. Department of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China;6. Department of Chemistry and Biochemistry, Kent State University, Kent, OH, USA;7. Vice‐Chancellor's Office, University of Surrey, Guildford, Surrey, UK;8. Department of Chemical and Process Engineering, University of Surrey, Guildford, Surrey, UK |
| Abstract: | Design of multicomponent yolk–shell structures is crucial for the fabrication of micro/nanoreactors for a variety of applications. This work reports the rational design and synthesis of yolk–shell‐structured submicroreactors with loaded metal nanoparticles into ZnO–microporous carbon core–shell structures. The solvothermal treatment and carbonization process of uniform zeolitic imidazolate framework‐8 (ZIF‐8)@resin polymer core–shell structures leads to the generation of yolk–shell‐structured ZnO@carbon. The synthesis conditions are optimized to track the evolution of ZIF‐8 in a confined space of resin polymer as a submicroreactor itself. It is found that nanoribbon evolution occurs via the formation of the intermediate needle‐like particles. The Pd&ZnO@carbon submicroreactor is shown to be a highly selective catalyst (selectivity >99%) for hydrogenation of phenylacetylene to phenylethylene. The excellent performance of Pd&ZnO@carbon particles is evidenced by higher conversion and selectivity than that of Pd/ZnO and Pd/C with similar Pd loading. Furthermore, Pd&ZnO@carbon submicroreactors show superior catalytic stability, and no deactivation after 25 h of reaction. The proposed strategy is promising for the design of multifunctional micro/nanoreactors or nanocontainers for construction of artificial cells. |
| Keywords: | metal– organic frameworks phenylacetylene hydrogenation submicroreactors yolk– shell particles zeolite imidazolate frameworks |
