燃料化学学报2017，Vol.45Issue(6)：660-668,9.
纤维素在亚/超临界甲醇中液化条件对主要化合物产物的影响
Effect of liquefaction parameters of cornstalk cellulose in sub-supercritical methanol on dominant chemical products
摘要
Abstract
The direct liquefaction of cornstalk cellulose in sub-supercritical methanol using an autoclave was investigated under reaction temperature range of 240-320℃, methanol dosage range of 0-200mL and reaction time range of 0-200min.The effects of various liquefaction parameters on the yields of bio-oil and dominant components (alkanes, esters, acids and alcohols, etc.) obtained from cornstalk cellulose liquefaction were investigated combining with GC/MS.The results show that the cellulose is transformed to alkanes, esters and alcohols, and the increasing of reaction temperature and methanol dosage can result in an increase in the yields of water soluble organic matter, heavy oil and various chemicals.The yield of bio-oil reaches to 25.1% under the optimum operating conditions: methanol dosage is 160mL;reaction temperature is 320℃;reaction time is 30min.The relative contents of dominant components in bio-oil are in the order: alkanes>alcohols>esters>acids, with the highest relative contents of 77.2%, 19.0%, 30.9%, 20.8%, respectively.The reaction temperature and methanol dosage have an obvious influence on the distribution and yields of dominant chemicals.As the reaction temperature and methanol dosage further increases, the concentration and activity of free radical will increase, and the components of alcohols and esters can be oxidized and condensed to transform into acids and so on when the reaction temperature and methanol usage are more than 160mL and 300℃, respectively, leading to a decline in the yields of chemicals and bio-oil.关键词
秸秆纤维素/甲醇/反应温度/反应时间Key words
stalk cellulose/methanol/reaction temperature/reaction time分类
能源科技引用本文复制引用
孙娇,王娅莉,解新安,黎巍,李璐,李雁,樊荻,魏星..纤维素在亚/超临界甲醇中液化条件对主要化合物产物的影响[J].燃料化学学报,2017,45(6):660-668,9.基金项目
The project was supported by the National Natural Science Foundation of China (21576107, 21176097)and Guangdong Provincial Science and Technology Program Foundation of China (2014A010106024) （21576107, 21176097）
国家自然科学基金(21576107, 21176097)和广东省科技计划项目(2014A010106024)资助 （21576107, 21176097）
