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Platinum-supported mesoporous silica of facile recovery as a catalyst for hydrogenation of polyaromatic hydrocarbons under ultra-mild conditions

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Abstract

Here we describe a new platinum catalyst comprised of Pt(0) nanoparticles immobilized on a modified magnetic mesoporous silica support modified with electron donor groups (–N). The material is constituted of controlled pore size (2.4–4.1 nm) and serves as a template for the generation of Pt nanoparticles (2–4 nm). The catalytic activity of the supported Pt nanoparticles was investigated in the catalytic reduction of anthracene under ultra-mild conditions. A complete morphological characterization of the hybrid organic–inorganic composite which confirms the formation of the hybrid material is also given. The catalyst was easily recycled using a small magnet, and it could be reused at least twice without significant loss of its catalytic activity. ICP–OES reveals that after the recyclability study no leaching of Pt or Si could be detected in the products (<0.01 ppm) which confirms the chemical stability of the material allowing it to be used as a potential hydrogenation catalyst for solid–liquid reactions with facile catalyst recovery.

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Acknowledgments

The authors are grateful to Fundação de Amparo a Pesquisa do Estado do Mato Grosso (FAPEMAT) and Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq) for financial support, and indebted to LEFE (Brazil), LME-DEMA (Brazil) and LMC-UnB for the XPS, TEM and BET analyses, respectively.

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Authors and Affiliations

  1. Instituto de Ciências Humanas, Naturais e Sociais, Universidade Federal de Mato Grosso, Av. Alexandre Ferronato, 1200, Sinop, MT, 78557-267, Brazil

    M. J. Jacinto, M. Wizbiki & L. C. Justino

  2. Departamento de Química, Universidade Federal de Mato Grosso, Avenida Fernando Correa da Costa s/n - Cidade Universitária, Cuiabá, MT, 78060-900, Brazil

    V. C. Silva

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  1. M. J. Jacinto
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  2. M. Wizbiki
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  3. L. C. Justino
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  4. V. C. Silva
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Correspondence to M. J. Jacinto.

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Jacinto, M.J., Wizbiki, M., Justino, L.C. et al. Platinum-supported mesoporous silica of facile recovery as a catalyst for hydrogenation of polyaromatic hydrocarbons under ultra-mild conditions. J Sol-Gel Sci Technol 77, 298–305 (2016). https://doi.org/10.1007/s10971-015-3854-6

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  • DOI: https://doi.org/10.1007/s10971-015-3854-6

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