Site-Selective Polyolefin Hydrogenolysis on Atomic Ru for Methanation Suppression and Liquid Fuel Production  

作　　者：Mingyu Chu Xianpeng Wang Xuchun Wang Xiangxi Lou Congyang Zhang Muhan Cao Lu Wang Youyong Li Sibao Liu Tsun-Kong Sham Qiao Zhang Jinxing Chen 

机构地区：[1]Institute of Functional Nano&Soft Materials(FUNSOM),Jiangsu Key Laboratory of Advanced Negative Carbon Technologies,Joint International Research Laboratory of Carbon-Based Functional Materials and Devices,Soochow University,Suzhou 215123,P.R.China [2]Department of Chemistry,University of Western Ontario,London,Ontario N6A 5B7,Canada [3]Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of Material Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China [4]Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China

出　　处：《Research》2023年第3期423-432,共10页研究（英文）

基　　金：the National Natural Science Foundation of China(51901147);J.C.thanks the support from the Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices(ZZ2103);Gusu Innovation and Entrepreneurship Leading Talent Program(ZXL2022492);the Suzhou Key Laboratory of Functional Nano&Soft Materials,Collaborative Innovation Center of Suzhou Nano Science&Technology,the 111 Project.;the Advanced Photon Source,an office of Science User Facility operated for the U.S.Department of Energy Office of Science by Argonne National Laboratory and was supported by the U.S.Department of Energy under contract no.DE-AC02-06CH11357.

摘　　要：Catalytic hydrogenolysis of end-of-life polyolefins can produce value-added liquid fuels and therefore holds great promises in plastic waste reuse and environmental remediation.The major challenge limiting the recycling economic benefit is the severe methanation(usually>20%)induced by terminal C–C cleavage and fragmentation in polyolefin chains.Here,we overcome this challenge by demonstrating that Ru single-atom catalyst can effectively suppress methanation by inhibiting terminal C–C cleavage and preventing chain fragmentation that typically occurs on multi-Ru sites.The Ru single-atom catalyst supported on CeO_(2)shows an ultralow CH_(4)yield of 2.2%and a liquid fuel yield of over 94.5%with a production rate of 314.93 gfuels gRu^(−1)h^(−1)at 250℃for 6 h.Such remarkable catalytic activity and selectivity of Ru single-atom catalyst in polyolefin hydrogenolysis offer immense opportunities for plastic upcycling.

关 键 词：catalyst OLEFIN FRAGMENTATION 

分 类 号：O64[理学—物理化学]