Spinodal Curve for the System Water + 1-Pentanol + 1-Propanol at 25 °C

详细信息    查看全文

• 作者：Radu P. Lungu (1)
  Roberto Sartorio (2)
  
• 关键词：Wheeler ; Widom model ; Local fitting ; Binodal and spinodal curve ; Plait point
• 刊名：Journal of Solution Chemistry
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：43
• 期：1
• 页码：109-125
• 全文大小：492 KB
• 作者单位：Radu P. Lungu (1)
  Roberto Sartorio (2)
  
  1. Department of Physics, University of Bucharest, M?gurele, 050107, Bucharest, Romania
  2. Department of Chemistry, Federico II University of Studies from Naples, 80126, Naples, Italy
  
• ISSN：1572-8927

文摘

The liquid–liquid equilibrium data at 25?°C of the system water--pentanol--propanol, that present a I type solubility gap, have been used to calculate the spinodal curve of this system through the use of the Wheeler–Widom model. As in the case of the water–chloroform–acetic acid system, analyzed with the same model in the past, a local fitting method has been necessary. A procedure based on the experimental position of the plait point was used to obtain the single spinodal points. The relative positions of binodal and spinodal curves indicate the presence of a large metastable area in the alcoholic-rich region.