Eco-friendly Method for Efficient Conversion of Cellulose into Levulinic Acid in Pure Water with Cellulase-Mimetic Solid Acid Catalyst

文献类型： 外文期刊

第一作者： Shen, Feng

作者： Shen, Feng;Li, Luyang;Yan, Lulu;Qi, Xinhua;Smith, Richard L., Jr.

作者机构：

关键词： Carbohydrate;Bifunctional catalyst;Sulfuric acid-free preparation;Hydrogen peroxide regeneration;Biomass conversion

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： 2017 年 5 卷 3 期

页码：

收录情况： SCI

摘要： Microcrystalline cellulose could be effectively converted into levulinic acid in pure water at 180 degrees C in 12 h without additives in a maximum yield of 51.5% with a cellulase-mimetic solid acid catalyst prepared without the use of sulfuric acid. Ball-milling pretreatment of cellulose improved levulinic acid yields by only a few percent, showing that the cellulose binding sites (-Cl) and catalytic sites (-SO3H) of the catalyst are key to the activity of the catalyst. The spent catalyst could be regenerated with H2O2 solution after recycling for 5 times to maintain more than 95% of its. catalytic activity. Glucose used as starting material under the same reaction conditions and with the same cellulase-mimetic solid acid gave a yield of 61.5% levulinic acid. The conversion route for carbohydrates to levulinic acid in pure water with the biomimetic catalyst prepared with a H2SO4-free method provides an environmentally friendly method for producing biobased-platform chemicals from renewable resources. [GRAPHICS]

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