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首页> 外文期刊>Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications >Cyano-bifunctional MOFs as superior catalysts for carbon dioxide fixation under co-catalyst and solvent free conditions
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Cyano-bifunctional MOFs as superior catalysts for carbon dioxide fixation under co-catalyst and solvent free conditions

机译：氰基双功能MOF作为助催化剂和溶剂自由条件下二氧化碳固定的优质催化剂

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摘要

In the present work, a strategy for the incorporation of nitrogen-rich units to an unsaturated Cr-based MOF, MIL100-Cr, is reported. Based on this strategy, various cyanide functional groups (diamino malononitrile, 1,3-phenylene diacetonitrile, and malononitrile) were incorporated into the framework and utilized as exceptional catalysts in the carbon dioxide fixation under mild, solvent, and co-catalyst free conditions. This is the first report on the application of cyano-bifunctional frameworks in cycloaddition reaction. The contemporaneous presence of accessible Lewis acid sites and pendent cyanide groups results in highly striking conversion and TON even for bulky and large substrates. High tendency and strong interaction of cyanide groups with CO2 cause a synergetic effect in the performance of the catalysts. The role of different cyanide groups applied in this work has also been studied. The reaction wouldn't proceed in the presence of pristine MOF without co-catalyst addition.
机译：在目前的工作中，报告了一种将富氮单元并入不饱和铬基MOF MIL100 Cr的策略。基于这一策略，各种氰化物官能团（二氨基丙二腈、1,3-苯二乙腈和丙二腈）被纳入框架，并在温和、无溶剂和无助催化剂的条件下用作二氧化碳固定的特殊催化剂。这是首次报道氰基双功能骨架在环加成反应中的应用。同时存在易接近的刘易斯酸位点和悬垂的氰化物基团，即使对于体积大的底物，也会产生非常惊人的转化率和吨级。氰化物基团与CO2的高倾向性和强相互作用对催化剂的性能产生协同效应。还研究了不同氰化物基团在这项工作中的作用。在未添加助催化剂的情况下，在原始MOF存在下，反应不会进行。

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