文献类型：期刊文献

英文题名：Correlation of the catalytic performance with Nb2O5 surface properties in the hydrodeoxygenation of lignin model compound

作者：Xin, Yu[1];Dong, Lin[1];Guo, Yong[1];Liu, Xiaohui[1];Hu, Yongfeng[2];Wang, Yanqin[1]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[2]Canadian Light Source Inc, 44 Innovat Blvd, Saskatoon, SK S7N 2V3, Canada

年份：2019

卷号：375

起止页码：202

外文期刊名：JOURNAL OF CATALYSIS

收录：;EI(收录号：20192507058253);WOS:【SCI-EXPANDED(收录号:WOS:000486104500021)】；

基金：This work was supported financially by the NSFC of China (No. 91545103, 21603072, 21832002, 21872050, 21808063), the Fundamental Research Funds for the Central Universities (222201718003) and the Science and Technology Commission of Shanghai Municipality (10dz2220500).

语种：英文

外文关键词：Lignin; 4-methylphenol; Hydrodeoxygenation; Hydrodeoxygenation; Aromatic hydrocarbons; Ru/Nb2O5; Raman; XANES; DRIFTS; Py-IR

摘要：Production of aromatic hydrocarbons through lignin hydrodeoxygenation (HDO) is of significant importance. Previously, we found that Ru/Nb2O5 was an excellent catalyst for the conversion of lignin to arenes with relatively high selectivity (71%). Herein, we aim to clarify which properties of Nb2O5 influence the activity and selectivity. Four Ru/Nb2O5 catalysts with different Nb2O5 morphologies were used in the HDO of 4-methylphenol. Intensive studies show that layered Nb2O5 supported Ru has more Nb=O groups (unsaturated NbOx sites) and highest Ru dispersion, which led to the highest activity and toluene selectivity, this was further confirmed by loading pre-synthesized Ru colloids in various Nb2O5. Finally, a Ru/Nb2O5 catalyst with more unsaturated Nb=O groups was designed and it was found that even with enzymatic lignin as the feedstock, the selectivity to arenes can reach up to 94.8% with the yield of hydrocarbons of 99.6%. This study provides a promising strategy for catalyst design towards the selective production of aromatic hydrocarbons from lignin. (C) 2019 Elsevier Inc. All rights reserved.