文献类型：期刊文献

英文题名：Selective Hydrodeoxygenation of Guaiacol to Cyclohexanol Over Core-Shell Cox@C@Ni Catalysts Under Mild Condition

作者：Zhou, Minghao[1] Ge, Fei[1] Xue, Yaqi[1] Su, Jiantao[1] Li, Jing[2] Xia, Haihong[2] Jiang, Jianchun[2]

第一作者：Zhou, Minghao

机构：[1] School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China; [2] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20230002542)

语种：英文

外文关键词：Alcohols - Ammonia - Catalyst activity - Catalyst selectivity - Shells (structures)

摘要：Lignin is a renewable resource and can produce a series of high value-added chemical products through hydrodeoxygenation. In this study, a series of core-shell Cox@C@Ni catalysts were prepared via two-step hydrothermal and calcination treatments, and then introduced for the conversion of guaiacol to cyclohexanol. Compared with Co@C catalyst, core-shell Cox@C@Ni catalysts exhibited much better catalytic performance. In order to investigate relation between catalyst properties and its catalytic activity, the core-shell Cox@C@Ni catalysts were characterized by BET, XRD, SEM, TEM, HRTEM, etc. It was found that the catalyst compositions and acidities had a significant effect on hydrodeoxygenation of guaiacol via ICP and NH3-TPD analysis. The influences of reaction temperature, reaction time and initial nitrogen pressure were also investigated in order to explore the optimal reaction condition. Almost 100% guaiacol conversion and 90% cyclohexanol selectivity were achieved over Co1.2@C@Ni catalyst at 220 °C, 0 MPa N2 for 2 h using isopropanol as H-donor solvent. This work was carried out under much milder conditions compared with previous researches. Moreover, the possible reaction pathways and reaction mechanism was deduced based on the product distributions and physicochemical properties. ? 2022, The Authors. All rights reserved.