Beyond Conventional Degradation:Catalytic Solutions for Polyolefin Upcycling  

作　　者：Lan Gan Zhongwen Dong Haofeng Xu Huidong Lv Guixia Liu Fan Zhang Zheng Huang 

机构地区：[1]State Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,University of Chinese Academy of Sciences,Chinese Academy of Sciences,Shanghai 200032 [2]School of Chemistry and Material Sciences,Hangzhou Institute of Advanced Study,Hangzhou 310024 [3]National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan),College of Chemistry,Sichuan University,Chengdu 610064

出　　处：《CCS Chemistry》2024年第2期313-333,共21页中国化学会会刊（英文）

基　　金：support for this research by the National Key R&D Program of China(grant no.2021YFA1501700);the National Natural Science Foundation of China(grant nos.21825109,21821002,22072178,22293013,and 22272114);the CAS Youth Interdisciplinary Team(grant no.JCTD-2021-11);the Fundamental Research Funds from Sichuan University(grant no.2022SCUNL103)is gratefully acknowledged.

摘　　要：Polyolefins(POs,i.e.,polyethylenes,ethylene/α-olefin copolymers,and polypropylenes)are the most ubiquitous synthetic macromolecular materials in modern life.Their widespread use and low recovery rate after extensive usage have caused significant resource waste and environmental concerns.Chemical recycling of POs provides an efficient approach to unravelling the polymer chain to various chemicals.However,conventional chemical recycling methods,including pyrolysis,hydrocracking,and oxidation,require high-energy input(typically>500℃)and/or the use of environmentally unfriendly chemicals,leading to complex product distribution.In this minireview,based on recent representative works,we summarize and highlight catalytic strategies addressing these issues in PO recycling from two perspectives:(1)employing advanced catalysts or technique designs to overcome the challenges in conventional chemical deconstruction approaches;and(2)developing novel tandem/cascade catalytic systems for highly selective PO upcycling under relatively mild conditions.We hope that this minireview will help researchers better understand the state of the art of PO chemical recycling and inspire more innovative and efficient ideas for this fast-developing field.

关 键 词：catalytic strategies chemical recycling DECONSTRUCTION POLYOLEFINS upcycling 

分 类 号：O64[理学—物理化学]