Hydrogenation of lignin-derived phenolic compounds over Co@C catalysts

被引：0

作者：

Zhao Y.-P. ^{[1
,2
]}

Zhao W. ^{[1
]}

Si X.-G. ^{[1
]}

Cao J.-P. ^{[1
]}

Wei X.-Y. ^{[1
,2
]}

机构：

[1] Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou

[2] School of Chemical Engineering and Technology, Xinjiang University, Urumqi

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2021年 / 49卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Co@C catalyst; Cyclohexanol; Guaiacol; Hydrodeoxygenation; Lignin;

D O I：

10.19906/j.cnki.JFCT.2021004

中图分类号：

学科分类号：

摘要：

Co-MOF was firstly prepared by solvothermal method, and then Co@C catalyst was prepared by one-step pyrolysis method from Co-MOF. The structure of Co@C catalyst was characterized by N2 physical adsorption-desorption (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Effects of Co-MOF pyrolysis temperature, reaction temperature, initial hydrogen pressure and reaction time on catalytic hydrogenation of guaiacol were investigated. The results show that both Co-MOF and Co@C are dominated by mesoporous. After pyrolysis, lamellar structure of Co-MOF changes into irregular sphericity. As raising pyrolysis temperature, specific surface area of Co@C decreases continuously. Under the conditions of reaction temperature 180 ℃, initial hydrogen pressure 2 MPa and reaction time 2 h, the guaiacol was completely transformed and selectivity of cyclohexanol was 92.8% using Co@C-600 as catalyst. The main reaction pathway of guaiacol hydrogenation catalyzed by Co@C is that guaiacol firstly forms phenol through removal of methoxyl group, and further is hydrogenated to cyclohexanol. In addition, Co@C-600 also has good catalytic activity for other phenolic monomers derived from lignin, such as phenol, p-methoxyphenol and 4-methyl guaiacol. Copyright ©2021 Editorial Dept. of Journal of Fuel Chemistry and Technology. All rights reserved.

引用

页码：55 / 62

页数：7

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