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Cycloaddition of CO_2 with epoxides by using an amino-acid-based Cu(Ⅱ)–tryptophan MOF catalyst

Chinese Journal of Catalysis 2018年第1期39卷 63-70页

作者： Gyeong Seon Jeong Amal Cherian Kathalikkattil Robin Babu Yongchul Greg Chung Dae Won Park Division of Chemical and Biomolecular Engineering Pusan National University Busan 609‐735 Korea School of Chemistry University of Dublin Trinity College Dublin 2 Ireland

Metal organic frameworks(MOFs)constructed from natural/biological units(amino acids)are prospective candidates as catalysts in CO2chemistry owing to their natural origin and high abundance of Lewis acid/base sites and functional ***,we report the catalytic efficiency of an amino‐acid‐based Cu‐containing MOF,denoted as CuTrp(Trp=L‐tryptophan).The CuTrp catalyst was synthesized by direct mixing at room temperature using methanol as a solvent-a synthetic route with notable energy *** catalyst was characterized using various physicochemical techniques,including XRD,FT‐IR,TGA,XPS,ICP‐OES,FE‐SEM,and BET *** catalytic activity of CuTrp was assessed in the synthesis of cyclic carbonates from epoxides and *** CuTrp operated in synergy with the co‐catalyst tetrabutylammonium bromide under solvent‐free *** reaction parameters were studied to identify the optimal reaction conditions and a reaction mechanism was proposed based on experimental evidence and previous density functional theory *** CuTrp also exhibited satisfactory stability in water and could be reused more than three times without any significant loss of activity.?2018,Dalian Institute of Chemical Physics,Chinese Academy of *** by Elsevier *** rights reserved.

关键词： Metal organic frameworks Amino acid Copper tryptophan complex direct mixing Carbon dioxide Cyclic carbonate

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