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Preparation, characterization, and catalytic performance of a novel methyl-rich Ti-HMS mesoporous molecular sieve with high hydrophobicity

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Abstract

A novel methyl-rich Ti-containing hexagonal mesoporous silica (Ti-HMS) molecular sieve with high hydrophobicity has been prepared by a two-step method involving co-condensation followed by vapor-phase methyl grafting. The sample was characterized by XRD, N2 adsorption, FTIR, UV-visible and 29Si NMR spectroscopies, TG, ICP-AES, and hydrophilicity measurements, and its catalytic performance was evaluated using the epoxidation of cyclohexene as a probe reaction. The Ti-HMS material retains a typical mesoporous structure and compared with a co-condensed Ti-HMS prepared in a one-step method possesses more methyl groups and higher hydrophobicity, and also exhibits better catalytic activity and selectivity.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Xuchang University, Xuchang, 461000, China

    XueFeng Li & ZhiHong Xu

  2. Shanghai Research Institute of Petrochemical Technology, Shanghai, 201208, China

    HuanXin Gao & QingLing Chen

Authors
  1. XueFeng Li
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  2. ZhiHong Xu
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  3. HuanXin Gao
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  4. QingLing Chen
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Correspondence to XueFeng Li.

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Li, X., Xu, Z., Gao, H. et al. Preparation, characterization, and catalytic performance of a novel methyl-rich Ti-HMS mesoporous molecular sieve with high hydrophobicity. Sci. China Chem. 53, 1337–1345 (2010). https://doi.org/10.1007/s11426-010-3188-8

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  • DOI: https://doi.org/10.1007/s11426-010-3188-8

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