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首页> 外文期刊>Journal of porous materials >Enhanced catalytic activity over Mo-containing hierarchical macro-mesoporous SBA-15 catalysts for epoxidation of olefins
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Enhanced catalytic activity over Mo-containing hierarchical macro-mesoporous SBA-15 catalysts for epoxidation of olefins

机译：增强含MO的分层宏观介孔SBA-15催化剂的催化活性，用于烯烃的环氧化

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摘要

In this study, a novel Mo-containing hierarchical ordered macro-mesoporous material, Mo-MM-SBA-15-4-30, was synthesized via a facile dual-templating technique. The formation of a well-defined macro-mesoporous structure was verified by N-2 adsorption-desorption curves, SEM and TEM observations. Moreover, the characterization results of XPS, ICP-AES, EDX demonstrated the successful incorporation of molybdenum species into the bulk hierarchical macro-mesoporous material Mo-MM-SBA-15-4-30. A series of comparative studies revealed that this hierarchical macro-mesoporous material Mo-MM-SBA-15-4-30 exhibited higher catalytic activities for the epoxidation of linear -olefin than Mo-containing mesoporous silica. Turnover number of linear -olefins was also significantly enhanced due to the hierarchical macro-mesoporous structure of Mo-MM-SBA-15-4-30 in which the presence of mesoporous channels shortened diffusion limitation. Additionally, the catalyst Mo-MM-SBA-15-4-30 exhibits the excellent catalytic stability.
机译：在该研究中，通过容易的双模板技术合成了一种新的含MO的分层有序的宏观 - 中孔材料MO-MM-SBA-15-4-30。通过N-2吸附 - 解吸曲线，SEM和TEM观测验证了定义明确的宏观介孔结构的形成。此外，XPS，ICP-AES，EDX的表征结果证明了将钼物种的成功掺入块状等级宏观 - 中孔材料MO-MM-SBA-15-4-30中。一系列比较研究表明，该等级宏观介孔材料MO-MM-SBA-15-4-30具有比含MO的介孔二氧化硅的线性 - 烯烃环氧化的更高催化活性。由于MO-MM-SBA-15-4-30的分层宏观 - 介孔结构，线性 - 烯烃的成交量也显着提高了介孔通道的存在缩短了扩散限制。另外，催化剂MM-SBA-15-4-30表现出优异的催化稳定性。

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  • 来源
    《Journal of porous materials》 |2019年第3期|869-880|共12页
  • 作者

    Zhang Jian; Zhao Yuan; Li Ang; Ye Helin; Shang Qiong; Shi Xiaoni; Shen Yirui;

  • 作者单位

    Lanzhou City Univ Sch Chem & Chem Engn Lanzhou 730030 Gansu Peoples R China;

    Lanzhou City Univ Sch Chem & Chem Engn Lanzhou 730030 Gansu Peoples R China;

    Lanzhou City Univ Sch Chem & Chem Engn Lanzhou 730030 Gansu Peoples R China;

    Lanzhou City Univ Sch Chem & Chem Engn Lanzhou 730030 Gansu Peoples R China;

    Lanzhou City Univ Sch Chem & Chem Engn Lanzhou 730030 Gansu Peoples R China;

    Lanzhou City Univ Sch Chem & Chem Engn Lanzhou 730030 Gansu Peoples R China;

    Jiangnan Univ Minist Educ Sch Chem & Mat Engn Key Lab Food Colloids & Biotechnol Wuxi 214122 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hierarchical material; Molybdenum; PMMA spheres; Epoxidation; Linear olefin;

    机译：层次材料;钼;PMMA球体;环氧化;线性烯烃;

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