Solubility comparison and partial molar volumes of 1,2-hexanediol before and after end-group modification by methyl oxalyl chloride and ethyl oxalyl monochloride in supercritical CO2

被引：5

作者：

Zhao, Lu

Yang, Hai-Jian ^{[1
]}

Cai, Zhuofu

机构：

[1] S Cent Univ Nationalities, State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Wuhan 430074, Hubei Province, Peoples R China

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2013年 / 57卷

基金：

中国国家自然科学基金;

关键词：

Supercritical CO2; Solubility; Partial molar volumes; Bartle and Chrastil models; DIGLYCOLIC ACID-ESTERS; METAL-IONS EXTRACTION; CARBON-DIOXIDE; SOLIDS; HYDROCARBONS; DERIVATIVES; LIQUIDS;

D O I：

10.1016/j.jct.2012.08.020

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Bis(methoxy oxalic)-1,2-haxenediester and bis(ethoxy oxalic)-1,2-haxenediester were synthesized by modifying the end groups of 1,2-hexanediol with methyl oxalyl chloride and ethyl oxalyl monochloride. The solubilities of all three compounds in supercritical carbon dioxide were determined at different conditions of pressures (8.8 to 18.8) MPa and temperatures (313, 333, and 353) K. Then, the solubility data were correlated with the Bartle model and the Chrastil model. The average absolute relative deviation (AARD) for the Bartle model was in the range of (3.89 to 25.46)% which is within a good approximation. The Chrastil model also showed satisfactory agreement and the AARD was in the range of (3.70 to 16.92)%. Furthermore, the partial molar volumes of those compounds were estimated following the theory developed by Kumar and Johnston. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：46 / 53

页数：8