文献类型：期刊文献

英文题名：Direct deoxygenation of lignin model compounds into aromatic hydrocarbons through hydrogen transfer reaction

作者：Guo, Tianye[1];Xia, Qineng[1];Shao, Yi[1];Liu, Xiaohui[1];Wang, Yanqin[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：547

起止页码：30

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20173504087636);WOS:【SCI-EXPANDED(收录号:WOS:000413607100004)】；

基金：This work was supported financially by the NSFC of China (No. 91545103, 21603072 and 21403065) and the Science and Technology Commission of Shanghai Municipality (10dz2220500).

语种：英文

外文关键词：Lignin model compounds; Direct deoxygenation; Aromatic hydrocarbons; Ru/Nb2O5-SiO2 catalyst; Catalytic hydrogen transfer

摘要：A new route is reported for the direct deoxygenation of lignin model compounds to aromatic hydrocarbons via the catalytic hydrogen transfer reactions over Ru/Nb2O5-SiO2 catalyst with 2-PrOH as a hydrogen donor. It is found that Ru/Nb2O5-SiO2 catalyst is active for the hydrodeoxygenation of p-cresol with 98.5% conversion and 84.0% yield of toluene at 230 degrees C, owing to the significant promotion effect of NbOX species on C-O bond cleavage and the proper transfer hydrogenation activity of Ru. Furthermore, Ru/Nb2O5-SiO2 catalyst also shows excellent performances in the transfer hydrodeoxygenation of various lignin model compounds such as 2-methoxy-4-methyl phenol, benzyl phenyl ether (alpha-O-4 model compound), 2-(2-methoxyphenyl)oxy-l-phenethanol (beta-O-4 model compound) and even the real lignin extracted from birch, into aromatic hydrocarbons with 2-PrOH as the hydrogen donor. The reaction pathway studies of these model compounds demonstrate that the direct deoxygenation (DDO) is the main reaction route over Ru/Nb2O5-SiO2 catalyst in the presence of 2-PrOH. Here, using 2-PrOH as a hydrogen source is found to be more selective to aromatic hydrocarbons than using molecular hydrogen. This work provides a new way for the high selective production of aromatic hydrocarbons from renewable lignin via the catalytic hydrogen transfer reactions.