当前位置: X-MOL 学术Chemistryopen › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
High Yielding Acid-Catalysed Hydrolysis of Cellulosic Polysaccharides and Native Biomass into Low Molecular Weight Sugars in Mixed Ionic Liquid Systems.
ChemistryOpen ( IF 2.5 ) Pub Date : 2019-10-29 , DOI: 10.1002/open.201900283
Iurii Bodachivskyi 1 , Unnikrishnan Kuzhiumparambil 2 , D Bradley G Williams 1
Affiliation  

Ionic media comprising 1‐butyl‐3‐methylimidazolium chloride and the acidic deep eutectic solvent choline chloride/oxalic acid as co‐solvent‐catalyst, very efficiently convert various cellulosic substrates, including native cellulosic biomass, into water‐soluble carbohydrates. The optimum reaction systems yield a narrow range of low molecular weight carbohydrates directly from cellulose, lignocellulose, or algal saccharides, in high yields and selectivities up to 98 %. Cellulose possesses significant potential as a renewable platform from which to generate large volumes of green replacements to many petrochemical products. Within this goal, the production of low molecular weight saccharides from cellulosic substances is the key to success. Native cellulose and lignocellulosic feedstocks are less accessible for such transformations and depolymerisation of polysaccharides remains a primary challenge to be overcome. In this study, we identify the catalytic activity associated with selected deep eutectic solvents that favours the hydrolysis of polysaccharides and develop reaction conditions to improve the outcomes of desirable low molecular weight sugars. We successfully apply the chemistry to raw bulk, non‐pretreated cellulosic substances.

中文翻译:

混合离子液体系统中纤维素多糖和天然生物质的高产率酸催化水解为低分子量糖。

包含1-丁基-3-甲基咪唑鎓氯化物和酸性深共熔溶剂氯化胆碱/草酸作为助溶剂的离子介质可非常有效地将各种纤维素底物(包括天然纤维素生物质)转化为水溶性碳水化合物。最佳的反应系统可直接从纤维素,木质纤维素或藻糖类中产生窄范围的低分子量碳水化合物,产率高,选择性高达98%。纤维素具有可再生平台的巨大潜力,可从中产生大量绿色替代品,以替代许多石化产品。在这个目标内,从纤维素物质生产低分子量糖类是成功的关键。天然纤维素和木质纤维素原料难以进行此类转化,多糖的解聚仍然是要克服的主要挑战。在这项研究中,我们确定了与选择的深共熔溶剂相关的催化活性,这些共熔溶剂有利于多糖的水解,并开发了反应条件以改善所需的低分子量糖的产量。我们已将化学方法成功地应用于未经处理的原料散装纤维素物质。
更新日期:2019-10-29
down
wechat
bug