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首页> 外文期刊>RSC Advances >Facile synthesis of crystalline viologen-based porous ionic polymers with hydrogen-bonded water for efficient catalytic CO2 fixation under ambient conditions
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Facile synthesis of crystalline viologen-based porous ionic polymers with hydrogen-bonded water for efficient catalytic CO2 fixation under ambient conditions

机译：基于结晶Viologen基多孔离子聚合物与氢键合水合成，在环境条件下有效催化CO2固定

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摘要

In this work, we report a series of crystalline viologen-based porous ionic polymers (denoted VIP-X, X = Cl or Br), that have in situ formed dicationic viologens paired with halogen anions and intrinsic hydrogen-bonded water molecules, towards metal-free heterogeneous catalytic conversion of carbon dioxide (CO2) under mild conditions. The targeted VIP-X materials were facilely constructed via the Menshutkin reaction of 4,4 '-bipyridine with 4,4 '-bis(bromomethyl)biphenyl (BCBMP) or 4,4 '-bis(chloromethyl)biphenyl (BBMBP) monomers. Their crystalline and porous structures, morphological features and chemical structures and compositions were fully characterized by various advanced techniques. The optimal catalyst VIP-Br afforded a high yield of 99% in the synthesis of cyclic carbonate by CO2 cycloaddition with epichlorohydrin under atmospheric pressure (1 bar) and a low temperature (40 degrees C), while other various epoxides could be also converted into cyclic carbonates under mild conditions. Moreover, the catalyst VIP-Br could be separated easily and reused with good stability. The remarkable catalytic performance could be attributed to the synergistic effect of the enriched Br- anions and available hydrogen bond donors -OH groups coming from H-bonded water molecules.
机译：在这项工作中，我们报告了一系列结晶Viologen的多孔离子聚合物（表示的VIP-X，X = Cl或Br），其原位形成的diticatic Viologens与卤素阴离子和本征氢键水分子朝向金属配对 - 在温和条件下加入二氧化碳（CO2）的异质催化转化。靶向VIP-X材料通过4,4' - 吡啶的Menshutkin反应与4,4'-Bis（溴甲基）联烯基（BCBMP）或4,4'-基（氯甲基）联苯（BBMBP）单体的单体构成。它们的结晶和多孔结构，形态学特征和化学结构和组合物通过各种先进技术完全表征。最佳催化剂VIP-BR在大气压（1巴）下通过CO 2环加油合成环状碳酸盐的高产99％，在大气压（1巴）和低温（40℃），而其他各种环氧化物也可转化为循环碳酸盐在温和条件下。另外，催化剂VIP-BR可以容易地分离并以良好的稳定性重复使用。显着的催化性能可能归因于来自H键合水分子的富集的BRICHION和可用的氢键供体-OH基团的协同作用。

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  • 来源
    《RSC Advances》 |2020年第6期|共9页
  • 作者

    Zhang Yadong; Zhang Ke; Wu Lei; Liu Ke; Huang Rui; Long Zhouyang; Tong Minman; Chen Guojian;

  • 作者单位

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

    Jiangsu Normal Univ Sch Chem &

    Mat Sci Jiangsu Key Lab Green Synthet Chem Funct Mat Xuzhou 221116 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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