文献类型：期刊文献

英文题名：Electrocatalytic hydrogenation of mono- and dimeric lignin to hydrocarbons in fluidized electrocatalytic system

作者：Zhai, Qiaolong[1] Han, Shuangmei[1] Hse, Chung-Yun[3] Jiang, Jianchun[1,2] Xu, Junming[1,2]

第一作者：Zhai, Qiaolong

通信作者：Xu, JM[1];Xu, JM[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat,SFA, Natl Engn Lab Biomass Chem Utilizat,Key & Open La, Nanjing 210042, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Peoples R China;[3]US Forest Serv, USDA, Southern Res Stn, Pineville, LA 71360 USA

年份：2022

卷号：227

外文期刊名：FUEL PROCESSING TECHNOLOGY

收录：;EI(收录号：20214811256277);Scopus(收录号：2-s2.0-85120177513);WOS:【SCI-EXPANDED(收录号:WOS:000750027100007)】；

基金：The authors would like to thank the financial support provided by the National Natural Science Foundation of China (32171713) .

语种：英文

外文关键词：Electrocatalytic hydrogenation; Lignin; Alkyl cyclohexane; Phosphotungstic acid

摘要：Herein, we reported a simple ECH process for preparing hydrocarbons from lignin monomers, dimers, and lignin oil in a fluidized electrocatalytic hydrogenation (FECH) system. The FECH system contained low redox potential H3O40PW12 (PW12) solution as an electrolyte, suspended Pt/C as catalyst, and NaBH4 as reductant. The intro-duction of NaBH4 reduced PW12 to a negative voltage in aqueous phase, and then hydrogenation of lignin-derived substrates. Meanwhile, NaBH4 as a hydrogen source could be directly combined with PW12 to achieve hydrogenation of substrates (non-electrocatalytic process). This co-driven catalytic process could realize high-performance hydrogenation of lignin oil into hydrocarbon fuels. Results demonstrated that almost complete conversion of 2-methoxy-4-propylphenol (MPP) was achieved with a higher faraday efficiency (92%), and the selectivity of the main products (propylcyclohexane and 4-propylcyclohexanol) was up to 87% at mild conditions (80 degrees C, 30 min and 50 mA/cm(2) current density). Dimer model compounds, Phenethoxybenzene (beta-O-4 linkage), also afforded over 90% hydrogenated C-6, C-8, and coupling products via C-O scission and aromatic rings hy-drogenation. By integrating depolymerization and ECH upgrading of lignin from different biomass species, lignin could be valorized to hydrocarbons with high yield.