Cosolvent Effect on the Solubility of Ammonium Benzoate in Supercritical Carbon Dioxide

被引：11

作者：

Li, Bingfei ^{[1
]}

Liu, Kun ^{[1
]}

Zhu, Jing ^{[1
]}

Wang, Yubo ^{[1
]}

Meng, Hong ^{[1
]}

Jin, Junsu ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Beijing Key Lab Membrane Sci & Technol, Beijing 100029, Peoples R China

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2022年 / 67卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ETHANOL; CO2; EXTRACTION; ACID;

D O I：

10.1021/acs.jced.1c00829

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Using a dynamic method, the experimental solubility of ammonium benzoate (ABE) in supercritical carbon dioxide (SCCO2) with a cosolvent of ethanol, acetone, or ethylene glycol was measured at a temperature of 318 K, a cosolvent mole fraction of 0.02, and a pressure range from 11.0 to 21.0 MPa; under the same pressure conditions, the solubility of ABE in SCCO2 with the ethanol cosolvent was further determined at temperatures of 308, 318, and 328 K and cosolvent molar concentrations of 0.01, 0.02, and 0.04. The experimental data were correlated with four semi-empirical models (Gonzalez, Thakur, Sovova, and Tang) commonly used for supercritical systems with a cosolvent, and satisfactory correlated results were obtained with an average absolute relative deviation value of 6.58% by the Tang model. In addition, to provide a theoretical explanation for the experimental phenomena, a new interpretation from a microcosmic point of view was proposed based on gas-phase density functional theory through the Gaussian 09 approach. The molecular interaction calculation results and experimental observation showed a sustainable agreement.

引用

页码：689 / 694

页数：6

共 28 条

[1] Supercritical fluid extraction of seed oils-A short review of current trends [J].