[1]常春,朱伟娜,候胜利,等.纤维素在乙醇介质中直接生成乙酰丙酸乙酯的研究[J].郑州大学学报(工学版),2013,34(05):104-108.[doi:10.3969/j.issn.1671-6833.2013.05.023]
　CHANG Chun,ZHU Wei-na,HOU Sheng-li,et al.Study on the Direct Production of EthylLevulinate from Cellulose in Ethanol Medium[J].Journal of Zhengzhou University (Engineering Science),2013,34(05):104-108.[doi:10.3969/j.issn.1671-6833.2013.05.023]
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纤维素在乙醇介质中直接生成乙酰丙酸乙酯的研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34
期数:
2013年05期
页码:
104-108
栏目:
出版日期:
2013-09-10

文章信息/Info

Title:
Study on the Direct Production of EthylLevulinate from Cellulose in Ethanol Medium
作者:
常春; 朱伟娜; 候胜利; 等.
郑州大学化工与能源学院,河南郑州,450001, 中国石油吉林石化公司炼油厂,吉林吉林,132022, 车用燃料技术国家重点实验室,河南南阳,473000
Author(s):
CHANG Chun1; ZHU Wei-na1; HOU Sheng-li2; QIAO Jian-yuan3; ZHU Feng3
1.School of Chemical Engineering and Energy ，Zhengzhou University , Zhengzhou 450001， China; 2.The 0il Refinery，JilinChemical Industrial Corporation，Jilin 132022，China; 3.State Key Laboratory of Motor Vehiele Biofuel Technology ，Nanyang473000，China
关键词:
纤维素;  乙酰丙酸乙酯;  醇解
Keywords:
Cellulose ;  Ethyl levulinate ;  Alcoholysis
分类号:
TK6
DOI:
10.3969/j.issn.1671-6833.2013.05.023
摘要:
对纤维素在乙醇体系中直接转化生成乙酰丙酸乙酯的规律进行了研究,探讨了固液比、硫酸浓度、反应温度、反应时间以及含水量对乙酰丙酸乙酯产率的影响.研究结果表明,当纤维素粒径为90μm,固液比为1∶15,硫酸浓度为1.0 wt％,反应温度为190℃,反应时间为30 min时,乙酰丙酸乙酯产率达到42.68％.随着体系含水量的增加,乙酰丙酸乙酯的产率逐渐下降.乙酰丙酸乙酯的稳定性随反应时间的延长而降低.通过对反应前后纤维素的扫描电镜、X射线衍射和红外吸收光谱分析,表明纤维素在乙醇体系中发生了明显降解.
Abstract:
The process of ethyl levulinate produced by cellulose in ethanol medium was investigated. Effects ofprocess variables including ratio of solid to liquid,acid concentration, reaction temperature,reaction time andthe addition of water on the yield of ethyl levulinate were studied,The results indicated that higher yield ofethyl levulinate 42.68 mol% was obtained, when the reaction time was 30 min,reaction temperature was 190℃,the ratio of solid to liquid was 1: 15 and the acid concentration was 1.0 wt%,respectively.In addition,the yield of ethyl levulinate decreased significantly with the increase of water addition, and the stability of ethyllevulinate also decreased with the increase of reaction time. Moreover, the original cellulose and the residue ofcellulose were characterized using scanning electron microscopy ( SEM),X-ray diffraction ( XRD) and Fou-rier-transform mid-infrared spectrometry ( FF-IR). The results showed that the structure of original cellulosehad been destroyed absolutely and the crystallinity of cellulose was decreased seriously.

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更新日期/Last Update: 1900-01-01