Amine-functionalized metal-organic frameworks loaded with Ag nanoparticles for cycloaddition of CO_(2)to epoxides  

作　　者：Huiyu Fu Jiewen Wu Changhai Liang Xiao Chen 

机构地区：[1]State Key Laboratory of Fine Chemicals&Laboratory of Advanced Materials and Catalytic Engineering,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China

出　　处：《Frontiers of Chemical Science and Engineering》2024年第11期193-203,共11页化学科学与工程前沿（英文版）

基　　金：National Key R&D Program of China(Grant No.2023YFB4103404);National Natural Science Foundation of China(Grant Nos.22272014 and 22161132005);Science and Technology Plan Project of Liaoning Province(Grant No.2023JH1/10400040);Fundamental Research Funds for the Central Universities(Grant No.DUT2021TD103).

摘　　要：With the advantages of low raw material cost and 100%atom utilization,the synthesis of high value-added chemical product cyclic carbonates by the cycloaddition of CO_(2)to epoxides has become one of the most prospective approaches to achieve the industrial utilization of CO_(2).In the reported catalytic systems,the complexity of the catalyst synthesis process,high cost,separation difficulties,and low CO_(2)capture limit the catalytic efficiency and its large-scale application.In this paper,Ag nanoparticles loaded on polyethyleneimine(PEI)-modified UiO-66-NH_(2)(Ag/PEI@UiO-66-NH_(2))are successfully synthesized by in situ immersion reduction.The Ag nanoparticles and the amino groups on the surfaces of PEI@UiO-66-NH_(2)contribute to the adsorption of CO_(2)and polarization of C–O bonds in epoxides,thereby boosting the conversion capability for the CO_(2)cycloaddition reaction.At the amount of propylene oxide of 0.25 mol and the catalyst dosage of 1%of the substrate,the yield and selectivity of propylene carbonate are up to 99%.In addition,the stability and recyclability of Ag/PEI@UiO-66-NH_(2)catalyst are attained.The Ag/PEI@UiO-66-NH_(2)catalyst also demonstrates a wide range of activity and distinctive selectivity toward cyclo-carbonates in the cycloaddition of CO_(2)to epoxides.This work provides a guide to designing a highly efficient catalyst for in situ capture and high-value utilization of CO_(2)in industrial applications.

关 键 词：CYCLOADDITION CO_(2)capture cyclic carbonates amine-functionalized UiO-66-NH_(2) Ag NPs 

分 类 号：TQ225.52[化学工程—有机化工] O643.36[理学—物理化学]