Enhanced furfural production from biomass and its derived carbohydrates in the renewable butanone–water solvent system†,Sustainable Energy & Fuels

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Enhanced furfural production from biomass and its derived carbohydrates in the renewable butanone–water solvent system†
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2019-09-12 , DOI: 10.1039/c9se00459a
Yuan Zhao _{1,

2,

3,

4} , Hao Xu _{1,

2,

3,

4} , Kaige Wang _{1,

2,

3,

4} , Kaifeng Lu _{1,

2,

3,

4} , Yang Qu _{1,

2,

3,

4} , Lingjun Zhu _{1,

2,

3,

4} , Shurong Wang _{1,

2,

3,

4}

Affiliation

The hemicellulose component of biomass can be efficiently converted into furfural, a well-known biofuel precursor, via a hydrothermal process, in which the reaction medium plays an important role. In this work, the renewable butanone–water solvent mixture was employed in the conversion of C5 carbohydrates for the first time. Experiments combined with molecular dynamics simulation were carried out to study the organic solvent effects on furfural production from xylose. The reaction was catalyzed by an ionic liquid catalyst with Lewis acidity. Results showed that butanone could strengthen the intermolecular attractive force between water and xylose, leading to accelerated protonation and dehydration of xylose as well as enhanced furfural yield. On the other hand, butanone had a shielding effect for furfural against water, and therefore furfural could hardly be involved in side reactions. Under the optimal reaction conditions, the introduction of 80% butanone into the solvent resulted in a significant increase in furfural yield from 9% to 56% at 140 °C. Furthermore, other common model compounds and raw biomass were also tested under similar conditions, from which decent furfural yields of 46% and 36% were obtained from xylan and corn stalk, respectively.

中文翻译：

在可再生的丁酮-水溶剂系统中，由生物质及其衍生的碳水化合物提高糠醛生产†

生物质的半纤维素成分可以通过水热过程，其中反应介质起着重要作用。在这项工作中，首次将可再生的丁酮-水溶剂混合物用于C5碳水化合物的转化。结合分子动力学模拟进行了实验，以研究有机溶剂对木糖糠醛生产的影响。该反应由具有路易斯酸度的离子液体催化剂催化。结果表明，丁酮可增强水与木糖之间的分子间吸引力，从而导致木糖的质子化和脱水加速以及糠醛收率的提高。另一方面，丁酮具有糠醛对水的屏蔽作用，因此糠醛几乎不参与副反应。在最佳反应条件下在140°C时，将80％的丁酮引入溶剂中，糠醛收率从9％显着提高到56％。此外，还在相似的条件下测试了其他通用模型化合物和原始生物质，从木聚糖和玉米秸秆中分别获得了46％和36％的可观糠醛收率。

更新日期：2019-10-24

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