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首页> 外文期刊>Crystal growth & design >Flexible Zn-MOF Exhibiting Selective CO2 Adsorption and Efficient Lewis Acidic Catalytic Activity
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Flexible Zn-MOF Exhibiting Selective CO2 Adsorption and Efficient Lewis Acidic Catalytic Activity

机译:柔性Zn-MOF表现出选择性CO2吸附和高效的路易斯酸性催化活性

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摘要

A two-dimensional, tetragonal porous metal organic framework {[Zn-2(TBIB)(2)(HTCPB)(2)]center dot 9DMF center dot 19H(2)O}(n) (1) has been synthesized under hydrothermal conditions by employing 1,3,5-tri(1H-benzo[d]imidazol-1-yObenzene (TBIB) and 1,3,5-tris(4'-carboxyphenyl-)benzene (H3TCPB). But noncovalent supramolecular interactions between the layers make this framework threedimensional, generating porosity in one dimension. Flexibility arises due to the presence of two types of large linkers wherein some functional groups of the ligands are not coordinated with the metal ion. Desolvated polymer shows moderate CO2 uptake (65 cm(3) g(-1) at 195 K and 1 bar) at low temperature and pressure. Compound 1 acts as a highly efficient heterogeneous catalyst toward the formation of cyclic carbonate through cycloaddition of CO2 as well as toward the synthesis of quinoline derivatives by the Friedlander reaction. The presence of the free -COOH, -C=O groups and uncoordinated -N atoms on the wall of the pores makes this framework an excellent candidate for the catalytic reactions without activation of the compound.
机译:二维四方多孔金属有机框架{[Zn-2(TBIB)(2)(HTCPB)(2)]中心点9dmf中心点19h(2)O}(n)(n)(n)(1)已在水热下合成通过使用1,3,5-Tri(1H-苯并[D]咪唑-1-亚苯苯(TBIB)和1,3,5-三苯基 - )苯(H3TCPB)的条件。但非共价超分子相互作用该层使该框架具有一个维度,在一个维度中产生孔隙度。由于存在两种类型的大连接器,其中配体的一些官能团不与金属离子协调的柔韧性。去溶剂化的聚合物显示中等CO 2吸收(65厘米( 3)在低温和压力下在195 k和1巴时的G(-1)。化合物1通过CO 2的环加成以及通过CO 2的环形加入形成环状碳酸酯,并朝着喹啉衍生物的合成Friedlander反应。游离-COOH,-C = O基团的存在和沃尔的未加工-N原子孔的L使得该框架使催化反应的优异候选物而不活化化合物。

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  • 来源
    《Crystal growth & design》 |2019年第3期|共9页
  • 作者单位

    Indian Inst Technol Kanpur Dept Civil Engn Kanpur 208016 Uttar Pradesh India;

    Indian Inst Technol Kanpur Dept Chem Kanpur 208016 Uttar Pradesh India;

    Indian Inst Technol Kanpur Dept Chem Kanpur 208016 Uttar Pradesh India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
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