Crab Shell-Derived Lotus Rootlike Porous Carbon for High Efficiency lsomerization of Glucose to Fructose under Mild Conditions

文献类型： 外文期刊

第一作者： Shen, Feng

作者： Shen, Feng;Qi, Xinhua;Fu, Junyan;Zhang, Xiao

作者机构：

关键词： Crab shell; Biomass; Solid base; Glucose; Fructose; Isomerization

期刊名称：ACS SUSTAINABLE CHEMISTRY & ENGINEERING （ 影响因子：8.198； 五年影响因子：8.471 ）

ISSN： 2168-0485

年卷期： 2019 年 7 卷 4 期

页码：

收录情况： SCI

摘要： A crab shell waste-derived carbon/CaO composite was synthesized by a facile one-step pyrolysis strategy. The composite was used as a solid base catalyst for isomerization of biomass-derived glucose to fructose, which is a key intermediate in transformation of cellulosic biomass into chemicals and biofuels. Physicochemical structure of the composite was characterized by X-ray diffraction, Raman spectra, scanning electron microscopy, inductively coupled plasma, Brunauer Emmett-Teller, and CO2 temperature programmed desorption. The composite showed a lotus rootlike porous structure with a surface area of 85 m(2)/g and contained as high as 22.4 wt % of CaO. The isomerization of glucose to produce fructose with the prepared solid base catalyst was investigated, and a maximum fructose yield of 29.2% was obtained from 5% glucose aqueous solution at mild conditions (80 degrees C and 40 min). A 25.0% yield of fructose still could be produced even when the initial glucose concentration was as high as 20 wt %. Finally, the mechanism of glucose isomerization by the synthesized solid base catalyst was studied. This work provided not only an alternative approach for utilization of crab shell waste but also a better understanding of cellulose-derived sugar transformations with solid base catalyst.

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