Selective xylose hydrogenolysis to 1,2-diols using Co@NC catalysts

被引：0
|
作者：
Liang Y. [1 ,2 ]
Li Z.-J. [1 ,3 ]
Liu Q.-Y. [2 ,4 ]
Ma L.-L. [2 ,4 ]
机构：
[1] Department of Engineering Science, University of Science and Technology of China, Hefei
[2] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou
[3] Nano Science and Technology Institute, University of Science and Technology of China, Suzhou
[4] CAS Key Laboratory of Renewable Energy, Guangzhou
来源：
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2021年 / 49卷 / 12期
基金：
中国国家自然科学基金;
关键词：
1,2-diols; 1,2-pentanediol; Co@NC; Hydrogenolysis; Xylose;
D O I：
10.1016/S1872-5813(21)60125-1
中图分类号：
学科分类号：
摘要：
Xylose is the predominant component of hemicellulose, and converting xylose to valuable compounds is essential to achieve biomass utilization. Herein, N-doped carbon nanotubes encapsulated metal catalysts (Co@NC) with hydrogenation and isomerization capacities were synthesized via bottom-up method for catalyzing xylose hydrogenolysis into 1,2-diols. The physicochemical properties of Co@NC prepared with different calcination temperature were determined by XRD, TEM, XPS and so on. The Co@NC prepared at 600 ℃ exhibited the optimal catalytic activity, and the yield of diols reached 70.1% with ethylene glycol, 1,2-propylene glycol and 1,2-pentanediol being 17.6%, 25.1% and 27.4%, respectively. The doping N species served as the basic sites which benefited the isomerization of xylose to xylulose. Xylulose was subsequently converted to glycolaldehyde and acetol through Retro-aldol reaction, followed by hydrogenation to produce ethylene glycol and 1,2-propylene glycol. 1,2-Pentanediol derived from the selective hydrodeoxygenation of xylose, the yield of which surpassed the results that had been reported. The Co@NC catalysts with high robustness under harsh hydrothermal conditions provided new insights into the effective conversion of lignocellulosic biomass to 1,2-diols. © 2021, Science Press. All right reserved.
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页码：1898 / 1910
页数：12
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