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High yield cycloaddition of carbon dioxide to epoxides catalyzed by metal–organic frameworks
Materials Today Sustainability ( IF 7.8 ) Pub Date : 2019-05-21 , DOI: 10.1016/j.mtsust.2019.100021
D. Rani , R. Kumar , V. Kumar , M. Singh

A series of metal–organic frameworks (MOFs) based on trimesic acid (also knows benzene tricarboxylic acid [btc]) have been synthesized by a solvothermal procedure which exhibit excellent catalytic fixation of CO2. Cycloaddition of CO2 to epoxides to produce cyclic carbonates is quite promising. The chemical fixation of CO2 reported here is solvent free and carried out under moderately mild conditions. All the MOFs [Zn-btc (1), Co-btc (2), Ni-btc (3), and Cu-btc (4)] were synthesized under same experimental conditions yet possess different structural and catalytic properties. All the catalysts follow first-order kinetics, and Zn-btc (1) proved to be the most catalytically active catalyst among all, with ∼100% yield with a total turnover number of 18,845 mol−1 and an initial turnover frequency (hour−1) of 946 with respect to the cyclic carbonate. All MOFs (14) show almost 100% conversion in these reactions. The same reaction using other metal (Co, Ni, Cu)-btc compounds has also resulted in products with more than 94% yield, creating an extra impact on the importance of the work.



中文翻译:

金属-有机骨架催化的高产环氧化二氧化碳与环氧化物的加成反应

通过溶剂热法合成了一系列基于均苯三酸(也称为苯三羧酸[ btc ])的金属有机骨架(MOF),这些骨架表现出出色的CO 2催化固定性。CO 2与环氧化物的环加成以产生环状碳酸酯是非常有前景的。此处报道的CO 2的化学固定是无溶剂的,并且在中等温和的条件下进行。所有MOF [Zn- btc1),Co- btc2),Ni- btc3)和Cu- btc4)]在相同的实验条件下合成,但具有不同的结构和催化性能。所有催化剂均遵循一阶动力学,并且Zn - btc1)被证明是所有催化剂中最具催化活性的催化剂,产率约100%,总周转数为18,845 mol -1  ,初始周转频率(小时- 946关于环状碳酸酯的1)。所有的MOF(1 - 4)示出了在这些反应中几乎100%的转化率。使用其他金属(Co,Ni,Cu)-btc化合物进行的相同反应也导致产品收率超过94%,这对这项工作的重要性产生了额外的影响。

更新日期:2019-05-21
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