Water-Assisted Selective Hydrodeoxygenation of Guaiacol to Cyclohexanol over Supported Ni and Co Bimetallic Catalysts

被引：161
作者：
Zhou, Minghao [1 ]
Ye, Jun [2 ]
Liu, Peng [1 ]
Xu, Junming [2 ]
Jiang, Jianchun [1 ]
机构：
[1] CAF, Inst Chem Ind Forest Prod, Jiangsu Prov Biomass Energy & Mat Lab, Nanjing 210042, Jiangsu, Peoples R China
[2] CAF, Inst New Technol Forestry, Beijing 100091, Peoples R China
来源：
ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2017年 / 5卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Guaiacol; Hydrodeoxygenation; Ni-based bimetallic catalysts; Reaction pathway; Bio-oil upgrading; BIO-OIL; PHASE HYDRODEOXYGENATION; MODEL-COMPOUND; FAST PYROLYSIS; PHENOLIC-COMPOUNDS; LIGNIN; NICKEL; CONVERSION; HYDROGENOLYSIS; HYDROGENATION;
D O I：
10.1021/acssuschemeng.7b01615
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hydrodeoxygenation (HDO) of guaiacol, a typical lignin derived phenolic compound, at relatively mild conditions was studied over gamma-Al2O3 and ZSM-5 supported catalysts with Ni and/or Co as active metal. Among various catalysts, NiCo/gamma-Al2O3 catalysts exhibited better guaiacol conversion up to 96.1% with cyclohexanol as the main product in aqueous, due to the proper acidity and interaction between metal particles and support. The effects of process parameters on guaiacol conversion and product distribution were investigated in detail associated with solvent effect. The cleavage of C-O bonds in guaiacol was investigated over NiCo/gamma-Al2O3 catalysts in aqueous phase. Phenol was found as the main intermediate with 1-methyl-1,2-cyclohexanediol as another intermediate instead of 2-methoxy-cyclohexanol. The demethoxylation first happened to form phenol, and then, the aromatic ring was hydrogenated to give cyclohexanol after further hydrogenation of cyclohexanone.
引用
收藏
页码：8824 / 8835
页数：12
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