文献类型：期刊文献

英文题名：Polystyrene Waste Thermochemical Hydrogenation to Ethylbenzene by a N-Bridged Co, Ni Dual-Atom Catalyst

作者：Li, Runze[1] Zhang, Zedong[1] Liang, Xiao[1] Shen, Ji[1] Wang, Jia[2,3] Sun, Wenming[4] Wang, Dingsheng[1] Jiang, Jianchun[2,3] Li, Yadong[1,5]

第一作者：Li, Runze

通信作者：Wang, DS[1];Wang, J[2];Wang, J[3];Sun, WM[4]

机构：[1]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[4]Capital Normal Univ, Dept Chem, Beijing Key Lab Opt Mat & Photon Devices, Beijing 100048, Peoples R China;[5]Anhui Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Mol Solids, Minist Educ, Wuhu 241002, Peoples R China

年份：2023

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20233014451854);Scopus(收录号：2-s2.0-85165619044);WOS:【SCI-EXPANDED(收录号:WOS:001024836100001)】；

基金：This work was supported by the National Key R & D Program of China (2018YFA0702003), the National Natural Science Foundation of China (52006106 to J.W. and 22171157 to D.W.), and the Natural Science Foundation of Jiangsu Province (BK2020789). We thank the 1W1B beamlines of Beijing Synchrotron Radiation Facility (BSRF) and the BL11B station of Shanghai Synchrotron Radiation Facility (SSRF) measurement for providing beam time to support this work.

语种：英文

摘要：Recycling waste plastics requires the degradation ofplastics intosmall molecules. However, various products are widely distributedusing traditional methods of depolymerizing polystyrene (PS) suchas catalytic pyrolysis and hydrogenolysis. Here, we creatively reporta N-bridged Co, Ni dual-atom (Co-N-Ni) catalyst for the targeted conversionof waste PS plastics to ethylbenzene via a pressurized tandem fixed-bedreactor where hydropyrolysis is coupled with downstream vapor-phasehydrotreatment. The Co-N-Ni catalyst achieves 95 wt % PS conversionwith 92 wt % ethylbenzene yield, significantly superior to the correspondingsingle-atom catalysts, and enables degradation of real PS plastics.Theoretical calculations and experimental results demonstrate thatthe d-band center of metal atoms is well regulated in the Co-N-Nicatalyst. The Co site activates the C C bond more easily, whilethe Ni site spatially optimizes the adsorption configuration of thestyrene molecule due to the electronic interaction. This Co-N-Ni catalystin the tandem reactor also shows excellent durability and providesa new direction for real plastic degradation.