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Facile synthesis of hollow structured mesoporous silica nanoreactors with confined ultra-small Pd NPs for efficient hydrogenation reactions

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Abstract

A facile method has been developed for the synthesis of hollow structured mesoporous silica nanoreactors with confined ultra-small metal nanoparticles through a one-pot sol–gel process in ethanol–water/ammonia medium. As examples, Pd nanoparticles protected with PVP [poly(N-vinyl-2-pyrrolidone)] or dendrimer [hydroxyl-terminated poly(amidoamine) (PAMAM)] molecules were successfully encapsulated, and the small particle size could be well maintained (< 2 nm). Such nanoreactors exhibited excellent catalytic activity towards nitrobenzene hydrogenation under 1 MPa H2 pressure at room temperature, which could also be stably recycled without deterioration on the activity. The efficient strategy might be adapted onto other nanostructures for catalysis applications.

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Acknowledgements

This work was supported by the Foundation of Sichuan University of Science & Engineering (No. 2017RCL47), the Opening Project of Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan (No. LZJ1706), the Education Department of Sichuan Province (No. 17ZB0300), the Zigong Science and Technology and Intellectual Property Bureau (No. 2016XC14) and the Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities (No. 2016JXY04).

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Authors and Affiliations

  1. School of Chemical and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, People’s Republic of China

    Juan Wei, Like Zou & Yulong Li

  2. Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities, Zigong, 643000, People’s Republic of China

    Juan Wei

  3. Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, Zigong, 643000, People’s Republic of China

    Juan Wei, Like Zou & Yulong Li

Authors
  1. Juan Wei
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  2. Like Zou
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  3. Yulong Li
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Correspondence to Juan Wei.

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Wei, J., Zou, L. & Li, Y. Facile synthesis of hollow structured mesoporous silica nanoreactors with confined ultra-small Pd NPs for efficient hydrogenation reactions. J Porous Mater 26, 157–162 (2019). https://doi.org/10.1007/s10934-018-0632-1

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  • DOI: https://doi.org/10.1007/s10934-018-0632-1

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