文献类型：期刊文献

英文题名：Waste PVC upcycling: Transferring unmanageable Cl species into value-added Cl-containing chemicals

作者：Feng, Bo[1,2];Jing, Yaxuan[1,2];Liu, Xiaohui[1,2];Guo, Yong[1,2];Wang, Yanqin[1,2]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：331

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20231313817266);WOS:【SCI-EXPANDED(收录号:WOS:001057926700001)】；

基金：This work was supported financially by the NSFC of China (22102056, 21832002) , China Postdoctoral Science Foundation (2021M691011 and 2021TQ0106) , and Shanghai Super Postdoctoral Fellow.

语种：英文

外文关键词：PVC upcycling; Cl transfer; Cl-containing chemicals; Ru/Al 2 O 3 catalyst; Hydrogenolysis

摘要：The upcycling of waste polyvinyl chloride (PVC) is a grand challenge because of the unmanageable Cl species. Here, we develop a Cl-transfer strategy to upcycle waste PVC into value-added organic chlorides and PE-like polymer with various Cl acceptors (tetrahydrofuran, dibutyl ether and butanol) over Ru/Al2O3 catalyst. The high utilization efficiency of Cl (> 80 %) can be obtained over Ru/Al2O3 at 180 ?C, 2Mpa H-2 with tetrahy-drofuran as an acceptor within tens of hours. The excellent performance is attributed to key features including Al2O3 for the C-O bond activation and metal Ru for C-Cl bond activation and H2 dissociation. The remaining PE-like polymer after removing Cl could be regarded as PE-like feedstock and further converted into methane through the same Ru/Al2O3 catalyst. The Cl-transfer system also enables the upcycling of several common PVC-contained wastes and works well in the scale-up test. This work offers a catalytic path to integrate waste PVC plastic into the supply chain of organic chlorides under the context of circular economy.