文献类型：期刊文献

英文题名：Catalytic transfer hydrogenation of 4-O-5 models in lignin-derived compounds to cycloalkanes over Ni-based catalysts

作者：Chen, Changzhou[1,3] Liu, Peng[1,3] Xia, Haihong[1,3] Zhou, Minghao[1,2,3] Jiang, Jianchun[1,3]

第一作者：Chen, Changzhou

通信作者：Zhou, MH[1]

机构：[1]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Key & Open Lab Forest Chem Engn,SFA,Inst Chem Ind, Nanjing 210042, Peoples R China;[2]Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou, Jiangsu, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Peoples R China

年份：2021

卷号：68

期号：4

起止页码：582-591

外文期刊名：JOURNAL OF THE CHINESE CHEMICAL SOCIETY

收录：;Scopus(收录号：2-s2.0-85096753776);WOS:【SCI-EXPANDED(收录号:WOS:000587667400001)】；

基金：National Natural Science Foundation of China, Grant/Award Number: 31700645; Fundamental Research Funds, Grant/Award Number: CAFYBB2018QB007

语种：英文

外文关键词：aromatic ether bonds; catalytic transfer hydrogenation; isopropanol; lignin; Ni; CNT

摘要：There is an urgent need to develop a selective hydrogenolysis of C-aryl-O bonds in lignin to produce valued-added chemicals and fuels. Recently, hydrogen has been used in the hydrogenation reaction, which hides inevitable danger and is not economical. Therefore, isopropanol, as a hydrogen-donor solvent, is employed for aryl ether hydrogenolysis in lignin models over nickel supported on a carbon nanotube (CNT). Except for aromatic ether (4-O-5), the Ni/CNT catalyst is also found to be suitable for alkyl-aryl ether (alpha-O-4 and beta-O-4) cleavage in control experiments. The physicochemical characterizations were carried out by means of H-2-temperature-programmed reduction, X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy analyses. The catalyst can be magnetically recovered and efficiently reused for five consecutive recycling tests in the transfer hydrogenation of aromatic ethers. A mechanism study indicated that the hydrogenolysis cleavage of the ether bond is the first step in the reaction process, and hydrogenation of aromatic rings is only a successive step in which phenol and benzene are intermediate states and are then further hydrogenated. Furthermore, it has been demonstrated that aryl groups play an important role in the hydrogenation of phenol in the competitive catalytic hydrogenation reaction of phenol.