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[1]张文英,倪英香,李卫星,等.蒸汽渗透耦合乳酸乙酯水解反应条件优化[J].南京工业大学学报(自然科学版),2016,38(06):76-80.[doi:10.3969/j.issn.1671-7627.2016.06.013]
 ZHANG Wenying,NI Yingxiang,LI Weixing,et al.Optimized conditions of vapor permeation coupled hydrolysis of ethyl lactate[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(06):76-80.[doi:10.3969/j.issn.1671-7627.2016.06.013]
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蒸汽渗透耦合乳酸乙酯水解反应条件优化()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年06期
页码:
76-80
栏目:
出版日期:
2016-11-15

文章信息/Info

Title:
Optimized conditions of vapor permeation coupled hydrolysis of ethyl lactate
文章编号:
1671-7627(2016)06-0076-05
作者:
张文英倪英香李卫星邢卫红
南京工业大学 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
ZHANG WenyingNI YingxiangLI WeixingXING Weihong
State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
聚二甲基硅氧烷膜 分离 蒸汽渗透 水解 乳酸乙酯
Keywords:
PDMS membrane separation vapor permeation hydrolysis ethyl lactate
分类号:
TQ028.8
DOI:
10.3969/j.issn.1671-7627.2016.06.013
文献标志码:
A
摘要:
水解反应中产物的富集将限制转化率的提高,蒸汽渗透可以在线移除特定产物,提高反应转化率。采用聚二甲基硅氧烷(PDMS)/陶瓷复合膜在线脱除乳酸乙酯水解生成的乙醇,优化了反应条件。考察了蒸汽渗透耦合乳酸乙酯水解过程中温度、催化剂用量、水酯摩尔比以及膜面积和反应液初始质量比(S/m0)对乳酸乙酯转化率的影响,最佳条件为:反应温度95 ℃、催化剂用量2%、水酯初始摩尔比10:1、S/m0为0.057 m2/kg,该条件下反应3 h时,乳酸的收率达到将近100%。
Abstract:
Polydimethylsiloxane(PDMS)/ceramic composite membrane was used to remove ethanol produced in hydrolysis of ethyl lactate with the increasing yield of lactic acid.The reaction rate of hydrolysis coupled with vapor permeation(VP)was lower than that without VP.The effects of temperature,catalyst amount,molar ratio of water/ethyl lactate,mole ratio of initial membrane area to the mass of reaction liquid(S/m0)on the conversion of ethyl lactate were investigated.The optimal conditions for coupling process were reaction temperature of 95 ℃,catalyst amount of 2%,initial molar ratio of water/ethyl lactate of 10:1,and S/m0 of 0.057 m2/kg.The yield of lactic acid reached almost 100% under the optimal conditions after 3 h.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-05-08
基金项目:国家自然科学基金(21576132)
作者简介:张文英(1989—),女,山东德州人,硕士,主要研究方向为膜分离; 李卫星(联系人),教授,E-mail:wxli@njtech.edu.cn.
引用本文:张文英,倪英香,李卫星,等.蒸汽渗透耦合乳酸乙酯水解反应条件优化[J].南京工业大学学报(自然科学版),2016,38(6):76-80..
更新日期/Last Update: 2016-12-20