文献类型：期刊文献

英文题名：Flexible NiCo-based catalyst for direct hydrodeoxygenation of guaiacol to cyclohexanol

作者：Chen, Changzhou[1,2] Zhou, Minghao[3,4] Liu, Peng[1,2] Sharma, Brajendra K.[4] Jiang, Jianchun[1,2]

第一作者：Chen, Changzhou

通信作者：Jiang, JC[1];Jiang, JC[2];Zhou, MH[3];Zhou, MH[4]

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, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China;[3]Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China;[4]Univ Illinois, Prairie Res Inst, Illinois Sustainable Technol Ctr, One Hazelwood Dr, Champaign, IL 61820 USA

年份：2020

卷号：44

期号：43

起止页码：18906-18916

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20204709499728);Scopus(收录号：2-s2.0-85096032250);WOS:【SCI-EXPANDED(收录号:WOS:000587607600036)】；

基金：The authors are grateful for the financial support from the National Key R&D Program of China (No. 2018YFB1501405-05) and the National Natural Science Foundation of China (31700645).

语种：英文

外文关键词：Catalysts - Hydrogen - Lignin - Nitrogen - Phenols

摘要：The catalytic hydrodeoxygenation (HDO) of lignin-derived phenols is an important step for bio-oil upgrading. Herein, a novel HDO system was established in the presence of nitrogen, instead of traditional hydrogen. A series of CNT-supported Ni-based catalysts was prepared and introduced in the HDO of guaiacol and other lignin-derived phenolic compounds. The bimetallic NiCo/CNT catalysts exhibited better catalytic performance during the HDO reaction, in comparison with monometallic Ni/CNT and Co/CNT catalysts. Among these catalysts, the (15 + 5)% NiCo/CNT catalyst afforded the highest guaiacol conversion (up to 100%) with cyclohexanol as the main product in isopropanol. The effects of process parameters on guaiacol conversion and product distribution were studied in detail, finding that the presence of nitrogen could help to suppress the generation of byproducts, while the presence of hydrogen would facilitate the occurrence of side reactions. The HDO reaction of guaiacol occurred possibly in two consecutive steps: the demethoxylation of guaiacol to phenol and the further hydrogenation of the aromatic ring to cyclohexanol.