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首页> 外文期刊>Journal of porous materials >Co-assembly route to facile synthesis of hierarchical core-shell nano-CuMOR@SBA-15 composite for one-step conversion of DME to ethanol with enhanced catalytic performance
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Co-assembly route to facile synthesis of hierarchical core-shell nano-CuMOR@SBA-15 composite for one-step conversion of DME to ethanol with enhanced catalytic performance

机译：配套途径以容易合成等级核 - 壳纳米Cumor @ SBA-15复合材料，用于DME对乙醇的一步转化，催化性能增强

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摘要

Core-shell composite catalysts have attracted attention due to their pore connectivity and synergistic catalytic effect. In this work, the novel core-shell nano-CuMOR@SBA-15 composite (NCMSC) was fabricated via the co-assembly method using the P123 triblock copolymer as template. The prepared samples were characterized by XRD, Xe-129 NMR, SEM, TEM techniques, and N-2 adsorption-desorption. Results indicate that the NCMSC's crystal core was encapsulated by ordered mesoporous Cu/SBA-15-like shell to form hierarchically porous NCMSC composite. Compared to the CuMOR, CuMOR + SBA-15 mixture, MOR + CuSBA-15 mixture and CuSBA-15, the NCMSC composite exhibited improved catalytic performance to convert dimethyl ether (DME) to ethanol with DME conversion of 42.8% and ethanol selectivity of 96.1%. Moreover, the life of the NCMSC composite catalyst was much longer and the induction of the reaction was shorter than other catalysts. This could be ascribed to the synergistic effect of nano-CuMOR@SBA-15 composite by combining carbonylation activity of CuMOR with the hydrogenation activity of CuSBA-15.This novel NCMSC composite can be a candidate catalyst of one-step conversion of DME to ethanol.
机译：由于其孔隙连接和协同催化效应，核壳复合催化剂引起了注意力。在这项工作中，通过使用P123三嵌段共聚物作为模板，通过共组装方法制造新的核 - 壳纳米Cumor @ SBA-15复合材料（NCMSC）。通过XRD，XE-129 NMR，SEM，TEM技术和N-2吸附 - 解吸来表征制备的样品。结果表明，NCMSC的晶体核心通过有序的介孔Cu / SBA-15样壳包封，以形成分层多孔NCMSC复合材料。与COMOR + SBA-15混合物，MOL + CUSBA-15混合物和CUSBA-15相比，NCMSC复合材料具有改善的催化性能，以转化二甲醚（DME）与DME转化为42.8％和96.1的乙醇选择性的乙醇％。此外，NCMSC复合催化剂的寿命长得多，反应的诱导比其他催化剂短。这可以通过与Cusba-15的氢化活性组合结合羰基化活性来归因于纳米Cumor @ SBA-15复合材料的协同作用。本新的NCMSC复合物可以是DME对乙醇的一步转化的候选催化剂。

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  • 来源
    《Journal of porous materials》 |2020年第3期|855-862|共8页
  • 作者

    Han Haibo; Han Dezhi; Li Kang; Lei Jie; Wang Youhe; Bai Peng; Rood Mark J.; Yan Zifeng;

  • 作者单位

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Peoples R China|Sinopec Engn Grp CO LTD Luoyang R&D Ctr Technol Luoyang 471003 Peoples R China;

    Qingdao Univ Sci & Technol Coll Chem Engn Qingdao 266042 Peoples R China;

    Sinopec Engn Grp CO LTD Luoyang R&D Ctr Technol Luoyang 471003 Peoples R China;

    Sinopec Engn Grp CO LTD Luoyang R&D Ctr Technol Luoyang 471003 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Peoples R China;

    Univ Illinois Dept Civil & Environm Engn 205 North Mathews Ave Urbana IL 61801 USA;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 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

    DME; Carbonylation; Core-shell composite; DME to ethanol;

    机译：DME;羰基化;核心壳复合;DME至乙醇;

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