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Amine functionalized mesoporous silica nanospheres supported gold nanoparticles: an effective catalyst for styrene epoxidation

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Abstract

By post-synthesis method, nano-gold catalysts anchored onto the amine functionalized mesoporous silica (nanospheres) were prepared. Symmetrical mesopores and dispersed amine groups in silica nanospheres could guarantee good diffusion capacity and a high dispersion gold nanoparticles (GNPs, 4.4 nm). The catalytic tests showed good catalytic activity and epoxidation selectivity, which was superior than the conventional molecular sieves catalysts. To investigate the origin of the gold nanoparticles, the catalyst were characterized using X-ray diffraction, Fourier transformed-infrared spectroscopy, X-ray photoelectron spectroscopy and other instruments. Some reaction parameters, such as solvent, oxidant concentration, catalyst concentration and reaction time, have been investigated and reaction conditions are optimized.

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Acknowledgments

This work is financially supported by the National Natural Science Foundation of China (21303085), the Natural Science Foundation of Jiangsu Province (BK20130901, BK20130930), the Foundation of Key Laboratory for Polygorskite Science and Applied Technology of Jiangsu Province, and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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Authors and Affiliations

  1. College of Sciences, Nanjing Tech University, Nanjing, 211816, China

    Fang Wang

  2. College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China

    Cheng Liu, Gui Liu & Junhua Liu

  3. Jiangsu Provincial Key Laboratory of Palygorskite Science and Applied Technology, Huaiyin Institute of Technology, Huaian, 223003, China

    Junhua Liu

Authors
  1. Fang Wang
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  2. Cheng Liu
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  3. Gui Liu
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  4. Junhua Liu
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Correspondence to Fang Wang or Junhua Liu.

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Wang, F., Liu, C., Liu, G. et al. Amine functionalized mesoporous silica nanospheres supported gold nanoparticles: an effective catalyst for styrene epoxidation. J Porous Mater 22, 1423–1430 (2015). https://doi.org/10.1007/s10934-015-0022-x

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  • DOI: https://doi.org/10.1007/s10934-015-0022-x

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