林产化学与工业2016，Vol.36Issue(4)：128-134,7.DOI:10.3969/j.issn.0253-2417.2016.04.018
农作物秸秆加压液化制备乙酰丙酸乙酯及其分离初探
Preliminary Study on Pressurized Liquefaction of Three Crops Straw for Preparation of Ethyl Levulinate
摘要
Abstract
Three kinds of crops ( wheat, corn and rice) straw were selected as raw materials for pressurized liquefaction. Ethanol and concentrated sulfuric acid (98%) were used as solvent and catalyst, respectively. The liquefaction was carried out under the conditions of reaction temperature 200 ℃, the dosage of catalyst 5%, the reaction time 60 min and the solid-liquid ratio 1∶15. Products of liquefaction were analyzed, and ethyl levulinate ( EL) was isolated from the liquefaction products. The results showed that under the same liquefaction conditions, wheat straw performed high liquefied performance. The structure of straw components was changed and degraded. Ethyl levulinate was the main component of liquefaction products. The purity and recovery rate of ethyl levulinate isolated by distillation were 92. 71% and 89. 93%, respectively.关键词
农作物秸秆/加压液化/乙酰丙酸乙酯/蒸馏分离Key words
crops straw/pressurized liquefaction/ethyl levulinate/distillation separation分类
化学化工引用本文复制引用
关倩,蒋剑春,徐俊明,王奎,冯君锋..农作物秸秆加压液化制备乙酰丙酸乙酯及其分离初探[J].林产化学与工业,2016,36(4):128-134,7.基金项目
“十二五”农村领域国家科技计划课题(2015BAD15B06) （2015BAD15B06）
国家自然科学基金优秀青年基金项目(31422013) （31422013）
