| 摘要: |
| 使用带共沸精馏分水的酯化反应实验装置,在树脂酸催化剂的作用下合成乳酸乙酯,乳酸的转化率达到88%以上,最佳实验条件为乙醇与乳酸的物质的量比为4:1、催化剂用量为乳酸用量的13%、反应时间为270min。在同等条件下,精馏法及传统分水法的乳酸转化率分别为82%和74%。 |
| 关键词: 乳酸乙酯 酯化反应 共沸精馏 分水器 |
| DOI： |
| 投稿时间：2002-05-17修订日期：2002-08-08 |
| 基金项目: |
|
| Esterifing Synthesis of Ethyl Lactate by Water Separation in Azeotropic Rectification |
|
Tuo Xiongxin, Wei Tengyou
|
| (College of Chemistry and Chemical Engineering, Guangxi University, Daxuelu, Nanning, Guangxi, 530004, China) |
| Abstract: |
| The esterification set with a water separator in azeotropic rectification is developed to enhance the conversion of lactic acid and reduce the time of synthetic reaction of ethyl lactate under the condition of resin catalyst. The favor conditions for reaction are 4 to 1 of alcohol to lactic acid, catalyst accounting for 13% of lactic acid amount, and reaction time kept at 270 min. At the same conditions, the over 88% of the conversion rate of the lactic acid is obtained for the azeotropic rectification, while the 82% for the rectification, and 74% for the normal water separation. |
| Key words: ethyl lactate esterification azeotropic rectification water separator |
