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Acidic deep eutectic solvents pretreatment for selective lignocellulosic biomass fractionation with enhanced cellulose reactivity.
International Journal of Biological Macromolecules ( IF 7.7 ) Pub Date : 2019-10-05 , DOI: 10.1016/j.ijbiomac.2019.09.100 Dong Tian 1 , Yujie Guo 2 , Jinguang Hu 3 , Gang Yang 2 , Jing Zhang 2 , Ling Luo 4 , Yinlong Xiao 4 , Shihuai Deng 5 , Ouping Deng 6 , Wei Zhou 6 , Fei Shen 2
International Journal of Biological Macromolecules ( IF 7.7 ) Pub Date : 2019-10-05 , DOI: 10.1016/j.ijbiomac.2019.09.100 Dong Tian 1 , Yujie Guo 2 , Jinguang Hu 3 , Gang Yang 2 , Jing Zhang 2 , Ling Luo 4 , Yinlong Xiao 4 , Shihuai Deng 5 , Ouping Deng 6 , Wei Zhou 6 , Fei Shen 2
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This work tailored a promising two-step pretreatment, i.e., liquid hot water extraction followed by mild acidic deep eutectic solvents pretreatment for clean lignocellulose fractionation while enhancing cellulose reactivity for its subsequent utilization. The abilities of three acidic deep eutectic solvents (formic acid-, acetic acid- and lactic acid-choline chloride) to selectively extract poplar wood lignin and enhance cellulose reactivity were comparatively assessed. Results showed that rather high lignin selectivity of 6.3-7.9 was obtained while the available area and porosity of the resulting cellulose were significantly increased. The resulting cellulose pulps exhibited comparable chemical reactivity to commercial bleached Kraft pulp when cellulose acetate was selected as testing cellulose derivative for demonstrating purpose, showing their great promise for high-value use. It was proposed that the unique ionic properties of these acidic deep eutectic solvents were responsible for their selective lignin removal and cellulose swelling/deconstruction to enhance cellulose chemical reactivity.
中文翻译：
酸性深共熔溶剂预处理，用于选择性木质纤维素生物质分馏，具有增强的纤维素反应性。
这项工作设计了一个有前途的两步预处理，即液体热水萃取，然后进行温和的酸性深共熔溶剂预处理，以进行清洁的木质纤维素分级分离，同时提高纤维素反应性，以供后续使用。比较评估了三种酸性深共熔溶剂（甲酸，乙酸和乳酸-氯化胆碱）选择性提取杨木木质素并增强纤维素反应性的能力。结果显示获得了6.3-7.9的相当高的木质素选择性，同时所得纤维素的可用面积和孔隙率显着增加。将所得的纤维素纸浆显示出可比较的化学反应性以商业漂白牛皮纸浆时的醋酸纤维素被选定为测试纤维素衍生物用于演示目的，展示出他们对高价值使用的巨大希望。有人提出，这些酸性深共熔溶剂的独特离子性质是其选择性去除木质素和纤维素溶胀/解构以增强纤维素化学反应性的原因。
更新日期：2019-10-07
中文翻译：
酸性深共熔溶剂预处理，用于选择性木质纤维素生物质分馏，具有增强的纤维素反应性。
这项工作设计了一个有前途的两步预处理，即液体热水萃取，然后进行温和的酸性深共熔溶剂预处理，以进行清洁的木质纤维素分级分离，同时提高纤维素反应性，以供后续使用。比较评估了三种酸性深共熔溶剂（甲酸，乙酸和乳酸-氯化胆碱）选择性提取杨木木质素并增强纤维素反应性的能力。结果显示获得了6.3-7.9的相当高的木质素选择性，同时所得纤维素的可用面积和孔隙率显着增加。将所得的纤维素纸浆显示出可比较的化学反应性以商业漂白牛皮纸浆时的醋酸纤维素被选定为测试纤维素衍生物用于演示目的，展示出他们对高价值使用的巨大希望。有人提出，这些酸性深共熔溶剂的独特离子性质是其选择性去除木质素和纤维素溶胀/解构以增强纤维素化学反应性的原因。
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