农作物秸秆加压液化制备乙酰丙酸乙酯及其分离初探

doi:10.3969/j.issn.0253-2417.2016.04.018

Abstract

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.

Key words: crops straw, pressurized liquefaction, ethyl levulinate, distillation separation

CLC Number:

TQ35
TK6

GUAN Qian, JIANG Jian-chun, XU Jun-ming, WANG Kui, FENG Jun-feng. Preliminary Study on Pressurized Liquefaction of Three Crops Straw for Preparation of Ethyl Levulinate[J]. Chemistry and Industry of Forest Products, 2016, 36(4): 128-134.

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Preliminary Study on Pressurized Liquefaction of Three Crops Straw for Preparation of Ethyl Levulinate

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[1]	GUAN Qian, JIANG Jian-chun, XU Jun-ming, WANG Kui, FENG Jun-feng. Preparation of Ethyl Levulinate by Pressurized Liquefaction of Wheat Straw [J]. Chemistry and Industry of Forest Products, 2016, 36(5): 127-132.
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