摘要
纤维素作为一种丰富的可再生资源,水解技术的低转化率和产物分离困难严重制约了它的广泛应用。合成具有温控特性的绿色双相低共熔溶剂(DESs),并将其应用于纤维素水解研究。利用傅里叶红外、原位红外、核磁、紫外分光光度等分析方法监测反应过程和检测反应产物,推测纤维素的转化机理。在癸酸/L-脯氨酸亲水相DESs、氯化胆碱/对甲苯磺酸一水合物疏水相DESs摩尔比1∶1,反应温度80℃,反应时间90 min的条件下,纤维素转化率可达到67%。反应结束后产物可在室温下自动分离。双相DESs在实现纤维素的高效转化下,比传统硫酸水解工艺更安全,环境危害也更小。
As a kind of widely used renewable resource,the low conversion rate and the difficulty of product separation of hydrolysis technology seriously restrict its wide application.Dual-phase deep eutectic solvents with temperature control characteristic was synthesized and applied in cellulose hydrolysis.The reaction process and products were determined with Fourier infrared,in situ infrared,nuclear magnetic,ultraviolet spectrophotometry and other analytical methods.The hydrolysis mechanism of cellulose was also studied.The dual-phase deep eutectic solvents achieve a good conversion up to 67%under the optimized conditions of molar ratio 1∶1 of capric acid/L-proline hydrophilic DES and choline chloride/p-toluenesulfonic acid monohydrate hydrophobic DESs,80℃and 90 min.The product can be separated automatically at room temperature after the reaction.Compared with the traditional process by sulfonic acid,this method is more efficient,safer and less harmful to the environment.
作者
赵腾达
刘翼泽
张若瑶
董红雨
贾本真
任红威
ZHAO Teng-da;LIU Yi-ze;ZHANG Ruo-yao;DONG Hong-yu;JIA Ben-zhen;REN Hong-wei(College of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei Province,China;Pollution prevention biotechnology laboratory of Hebei Province,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei Province,China;School of Chemical and Pharmacutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei Province,China)
出处
《化学工程》
CAS
CSCD
北大核心
2023年第6期7-12,共6页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(52004080)
河北省自然科学基金资助项目(E2021208033,E2022208046)
河北省在读研究生创新能力培养资助项目(CXZZSS2023091)
河北科技大学在读研究生创新能力培养资助项目(XJCXZZSS2022013)。
关键词
生物质
纤维素
双相低共熔溶剂
葡萄糖
高效水解
biomass
cellulose
dual-phase deep eutectic solvents
glucose
efficient hydrolysis
