Measurement of (vapor + liquid) equilibrium for the systems {methanol + dimethyl carbonate} and {methanol + dimethyl carbonate + tetramethylammonium bicarbonate} at p = (34.43, 67.74) kPa
- 作者：Changsheng Yang ; tjuyangchsh@yahoo.com.cn ; Hao Zeng ; Xia Yin ; Shengyong Ma ; Feizhong Sun ; Yafei Li ; Jiao Li
- 关键词：Methanol ; Dimethyl carbonate ; Tetramethylammonium bicarbonate ; Low pressure ; Activity coefficient models
- 刊名：Journal of Chemical Thermodynamics
- 出版年：2012
- 期刊代码：123_00219614
- 类别：ch
- 出版时间：October, 2012
- 卷：53
- 期：Complete
- 页码：158-166
- 文件大小：527 K
摘要
Isobaric (vapor + liquid) equilibrium (VLE) data for the binary system (methanol + dimethyl carbonate) and the ternary system (methanol + dimethyl carbonate + tetramethylammonium bicarbonate) have been measured at p = (34.43, 67.74) kPa using a modified Rose-Williams still. The experimental data for the binary system were well correlated by Wilson, NRTL, and UNIQUAC activity-coefficient models at the two reduced pressures. All the experimental results of the binary system passed the thermodynamic consistency test by the area test of Redlich-Kister and the point test of Van Ness et al. The experimental results of ternary system show that the salt tetramethylammonium bicarbonate has a salting-in effect on methanol. And this effect enhances when the salt concentration increases.