小麦秸秆加压液化制备乙酰丙酸乙酯

doi:10.3969/j.issn.0253-2417.2016.05.019

林产化学与工业 ›› 2016, Vol. 36 ›› Issue (5): 127-132.doi: 10.3969/j.issn.0253-2417.2016.05.019

小麦秸秆加压液化制备乙酰丙酸乙酯

关倩¹, 蒋剑春^1,2, 徐俊明^1,2, 王奎^1,2, 冯君锋¹

1. 中国林业科学研究院林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开发性实验室;江苏省生物质能源与材料重点实验室, 江苏南京 210042;
2. 江苏强林生物能源材料有限公司, 江苏溧阳 213364

收稿日期:2015-12-01 出版日期:2016-10-25 发布日期:2016-11-05
通讯作者: 蒋剑春(1955-),男,研究员,博士生导师,主要从事生物质能源与炭材料的研究工作;E-mail:bio-energy@163.com。 E-mail:bio-energy@163.com
作者简介:关倩(1986-),女,河南鹿邑人,博士生,研究方向:生物质液化油的制备与精炼;E-mail:gq19870805@126.com
基金资助:
“十二五”农村领域国家科技计划课题（2015BAD15B06）；国家自然科学基金优秀青年基金项目（31422013）

Preparation of Ethyl Levulinate by Pressurized Liquefaction of Wheat Straw

GUAN Qian¹, JIANG Jian-chun^1,2, XU Jun-ming^1,2, WANG Kui^1,2, FENG Jun-feng¹

1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
2. Jiangsu Qianglin Bio-energy and Bio-materials Co., Ltd., Liyang 213364, China

Received:2015-12-01 Online:2016-10-25 Published:2016-11-05

摘要/Abstract

摘要： 以小麦秸秆为原料，浓硫酸为催化剂，乙醇为溶剂进行液化实验，分析了液化产物的组成，考察了不同条件对目标产物乙酰丙酸乙酯（EL）得率及液化率的影响。结果表明：在浓硫酸用量10%、反应温度190℃、反应时间60 min，液固比为18：1（g：g）条件下，小麦秸秆的液化效果较好，液化率为75%，此时EL的得率为18.11%；经红外光谱分析可知秸秆在反应过程中发生降解；液体产物中包含醛、酮、酯、酚、酸类等多种含氧化合物，纤维素降解生成葡萄糖、葡萄糖苷、乙氧基甲基糠醛等中间产物，并最终转化为乙酰丙酸乙酯。

关键词: 麦秸, 液化, 乙酰丙酸乙酯, 液化率, 得率

Abstract: The liquefaction experiments were carried out using wheat straw as raw material, concentrated sulfuric acid as catalyst and ethanol as solvent. The composition of liquefied product was analyzed, and the effects of different conditions on conversion rate and yield of the target product ethyl levulinate (EL) were examined. The results showed that optimum liquefaction conditions was catalyst dosage 10%, reaction temperature 190℃, reaction time 60 min, and liquid solid ratio of 18:1 (g:g, the same below). Under the circumstances, the yield of EL was up to 18.11% with liquefaction ratio of 75%. Degradation of wheat straw during the reaction was confirmed by infrared spectroscopic analysis. The liquid product contained aldehydes, ketones, esters, phenols, acids, and some other oxygenates. It was found that cellulose was converted into intermediate, such as glucose, glucoside, ethoxymethyl furfural, et al. They can be further transformed into ethyl levulinate.

Key words: wheat straw, liquefaction, ethyl levulinate, liquefaction ratio, yield

中图分类号:

TQ35
TK5

关倩, 蒋剑春, 徐俊明, 王奎, 冯君锋. 小麦秸秆加压液化制备乙酰丙酸乙酯[J]. 林产化学与工业, 2016, 36(5): 127-132.

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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小麦秸秆加压液化制备乙酰丙酸乙酯

Preparation of Ethyl Levulinate by Pressurized Liquefaction of Wheat Straw

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