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.
出处
《Research》
SCIE
EI
CSCD
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.
