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首页> 外文期刊>Advanced Functional Materials >The Development of Yolk-Shell-Structured Pd&ZnO@Carbon Submicroreactors with High Selectivity and Stability
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The Development of Yolk-Shell-Structured Pd&ZnO@Carbon Submicroreactors with High Selectivity and Stability

机译：具有高选择性和稳定性的卵黄壳结构Pd＆ZnO @碳亚微反应器的开发

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摘要

1801737.1-1801737.10%Design of multicomponent yolk-shell structures is crucial for the fabrication of microanoreactors 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 microanoreactors or nanocontainers for construction of artificial cells.
机译：1801737.1-1801737.10％多组分卵黄壳结构的设计对于制造用于各种应用的微/纳米反应器至关重要。这项工作报告了蛋黄壳结构的亚微反应器的合理设计和合成，这些微反应器将负载的金属纳米颗粒合成为ZnO-微孔碳核-壳结构。均匀的咪唑沸石骨架8（ZIF-8）@树脂聚合物核-壳结构的溶剂热处理和碳化过程导致卵黄-壳结构的ZnO @碳的生成。优化了合成条件，以跟踪ZIF-8在作为亚微反应器本身的树脂聚合物的受限空间中的演化。发现通过中间针状颗粒的形成发生了纳米带的演化。 Pd＆ZnO @碳亚微反应器显示出是一种高选择性催化剂（选择性> 99％），用于将苯乙炔氢化为苯乙烯。 Pd＆ZnO @碳颗粒的优异性能可通过比具有相似Pd负载的Pd / ZnO和Pd / C更高的转化率和选择性来证明。此外，Pd＆ZnO @碳亚微反应器显示出优异的催化稳定性，并且在反应25小时后不会失活。所提出的策略对于设计用于构建人造细胞的多功能微/纳米反应器或纳米容器很有希望。

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  • 来源
    《Advanced Functional Materials》 |2018年第32期|1801737.1-1801737.10|共10页
  • 作者

    Tian Hao; Huang Fei; Zhu Yihan; Liu Shaomin; Han Yu; Jaroniec Mietek; Yang Qihua; Liu Hongyang; Lu Gao Qing Max; Liu Jian;

  • 作者单位

    Chinese Acad Sci, Dalian Inst Chem Phys, iChEM, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China;

    King Abdullah Univ Sci & Technol, Chem & Life Sci & Engn Div, Adv Membranes & Porous Mat Ctr, Thuwal 239556900, Saudi Arabia;

    Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia;

    King Abdullah Univ Sci & Technol, Chem & Life Sci & Engn Div, Adv Membranes & Porous Mat Ctr, Thuwal 239556900, Saudi Arabia;

    Kent State Univ, Dept Chem & Biochem, Kent, OH 44242 USA;

    Chinese Acad Sci, Dalian Inst Chem Phys, iChEM, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China;

    Univ Surrey, Vice Chancellors Off, Guildford GU2 7XH, Surrey, England;

    Chinese Acad Sci, Dalian Inst Chem Phys, iChEM, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    metal-organic frameworks; phenylacetylene hydrogenation; submicroreactors; yolk-shell particles; zeolite imidazolate frameworks;

    机译：金属-有机骨架;苯乙炔加氢;亚微反应器;蛋黄壳颗粒;咪唑类沸石骨架;

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