Environmentally benign metal catalyst for the ring-opening copolymerization of epoxide and CO_(2): state-of-the-art, opportunities, and challenges  

作　　者：Han Cao Shunjie Liu Xianhong Wang 

机构地区：[1]Key Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,130022,China

出　　处：《Green Chemical Engineering》2022年第2期111-124,共14页绿色化学工程（英文）

基　　金：The authors greatly appreciated the financial support from National Natural Science Foundation of China(Grant No.51988102).

摘　　要：Carbon dioxide(CO_(2))is the main greenhouse gas,whereas it is also a nontoxic,abundant,cheap carbon and oxygen resource.The copolymerization of CO_(2) with epoxide presents a sustainable approach to the synthesis of biodegradable polymers,which upcycles the waste into wealth.Metal complex catalyst plays the central role in the reaction,since it provides oxophilic and Lewis acidic active center both for monomer activation and chain end stabilization,and nucleophiles as Lewis base for initiation.However,heavy metal catalyst with certain toxicity such as cobalt undisputedly dominates the copolymerization catalysis which comprises the overall sustainability.To circumvent the potential environmental hazard,developing highly active catalyst composed of green metals is of great importance especially when the polymer was utilized for agriculture purpose.This work reviews the development of sustainable metal catalysts for the production of CO_(2) copolymer,centered by Al,Mg,Ti,Fe,generally acknowledged as low toxic,environmentally benign,biocompatible,and also abundant in earth's crust.Emphasis is placed in recent five years where several historic examples are also included to construct a full picture of the sustainable catalysis explored to date.

关 键 词：Green catalysis Aluminum catalyst Sustainable polymer CO_(2)valorization Ring-opening polymerization 

分 类 号：TQ426[化学工程] X701[环境科学与工程—环境工程]