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Cycloaddition of CO_2 and propylene oxide by using M(HBTC)(4,4'-bipy)·3DMF(M=Ni,Co,Zn) metal-organic frameworks 被引量:2
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作者 Seol-Hee kim Robin Babu +2 位作者 dong-woo kim Wonjoo Lee Dae-Won Park 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2018年第8期1311-1319,共9页
Three pillar-layered metal-organic frameworks(MOFs) based on M(HBTC)(4,4'-bipy).3DMF(M =Ni, Co, and Zn; HBTC = 1,3,5-benzenetricarboxylic acid, 4,4'-bipy = 4,4′-bipyridine) were synthesized using a solvothe... Three pillar-layered metal-organic frameworks(MOFs) based on M(HBTC)(4,4'-bipy).3DMF(M =Ni, Co, and Zn; HBTC = 1,3,5-benzenetricarboxylic acid, 4,4'-bipy = 4,4′-bipyridine) were synthesized using a solvothermal method. Zn(HBTC)(4,4'-bipy).3DMF was synthesized for the first time using both a solvothermal and microwave method, and subsequently characterized by various physicochemical methods. The structure of M(HBTC)(4,4'-bipy).3DMF consisted of honeycomb grid layers of M2+ ions and BTC units, which were further linked by the 4,4'-bipy pillars to form a three-dimensional highly porous framework. All the MOFs displayed excellent synergistic catalytic properties with alkyl ammonium halides(TBAX) in the solventless fixation of CO_2 with epoxides to produce cyclic carbonates. The catalytic activities of these MOFs followed the trend Zn Co Ni,which was explained by the acid-base bifunctional properties. The microwave-synthesized Zn(HBTC)(4,4'-bipy).3DMF material exhibited physical, chemical, and catalytic properties that were similar to those of the catalyst obtained using a conventional solvothermal synthesis. The scope of various parameters, including recyclability, was studied, and a plausible reaction mechanism was suggested. 展开更多
关键词 M(HBTC)(4 4'-bipy)·3DMF(M=Ni Co Zn) Microwave method Carbon dioxide Epoxide Cyclic carbonate
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