SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (2): 400-404.DOI: 10.1016/j.cjche.2018.06.011

• Chemical Engineering Thermodynamics • 上一篇    下一篇

Solubility of the silver nitrate in supercritical carbon dioxide with ethanol and ethylene glycol as double cosolvents: Experimental determination and correlation

Hongrui Ren, Jibin Song, Qinqin Xu, Jianzhong Yin   

  1. State Key Laboratory of Fine Chemical, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2018-03-01 修回日期:2018-05-25 出版日期:2019-02-28 发布日期:2019-03-18
  • 通讯作者: Jianzhong Yin
  • 基金资助:

    Supported by the National Natural Science Foundation of China (U1662130, 21506027), China Postdoctoral Science Foundation (2017T100175, 2015M571307) and the Fundamental Research Funds for the Central Universities (DUT17JC34)

Solubility of the silver nitrate in supercritical carbon dioxide with ethanol and ethylene glycol as double cosolvents: Experimental determination and correlation

Hongrui Ren, Jibin Song, Qinqin Xu, Jianzhong Yin   

  1. State Key Laboratory of Fine Chemical, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China
  • Received:2018-03-01 Revised:2018-05-25 Online:2019-02-28 Published:2019-03-18
  • Contact: Jianzhong Yin
  • Supported by:

    Supported by the National Natural Science Foundation of China (U1662130, 21506027), China Postdoctoral Science Foundation (2017T100175, 2015M571307) and the Fundamental Research Funds for the Central Universities (DUT17JC34)

摘要: Solubility of the silver nitrate in the supercritical carbon dioxide containing ethanol and ethylene glycol as double cosolvents was measured under certain pressure and temperature range (10-25 MPa, 323.15-333.15 K). The impact of the pressure and temperature on the solubility was also investigated. Based on the experiment data, a correlation model concerning solid's solubility in supercritical fluids was established by combining the solubility parameter with the thermodynamic equation when a binary interaction parameter and a mixed solvent solubility parameter were defined. Experiments show the solubility of AgNO3 increases with the pressure at a certain temperature. However, the influence of temperature is related to a pressure defined as the turnover pressure (12.3 MPa). When the pressure is higher (or lower) than this turnover pressure, silver nitrate's solubility shows increasing (or decreasing) trend as the temperature rises. Satisfactory accuracy of our presented model was revealed by comparing experimental data with calculated results.

关键词: Supercritical carbon dioxide, Silver nitrate, Solubility parameter, Correlation model

Abstract: Solubility of the silver nitrate in the supercritical carbon dioxide containing ethanol and ethylene glycol as double cosolvents was measured under certain pressure and temperature range (10-25 MPa, 323.15-333.15 K). The impact of the pressure and temperature on the solubility was also investigated. Based on the experiment data, a correlation model concerning solid's solubility in supercritical fluids was established by combining the solubility parameter with the thermodynamic equation when a binary interaction parameter and a mixed solvent solubility parameter were defined. Experiments show the solubility of AgNO3 increases with the pressure at a certain temperature. However, the influence of temperature is related to a pressure defined as the turnover pressure (12.3 MPa). When the pressure is higher (or lower) than this turnover pressure, silver nitrate's solubility shows increasing (or decreasing) trend as the temperature rises. Satisfactory accuracy of our presented model was revealed by comparing experimental data with calculated results.

Key words: Supercritical carbon dioxide, Silver nitrate, Solubility parameter, Correlation model