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Solubilities of L-Proline in Subcritical HFC-134a and Supercritical CO2 Fluid
LIU Ling,LI Zhen,LIU Zhong-Wen,LIU Zhao-Tie * #
Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University)
*Correspondence author
#Submitted by
Subject:
Funding: 教育部博士点基金,陕西省自然科学基金(No.20070718003,2007B07)
Opened online: 2 February 2009
Accepted by: none
Citation: LIU Ling,LI Zhen,LIU Zhong-Wen.Solubilities of L-Proline in Subcritical HFC-134a and Supercritical CO2 Fluid[OL]. [ 2 February 2009] http://en.paper.edu.cn/en_releasepaper/content/28355
 
 
A static method coupled with gravimetric analysis was used to measure the solubility of L-proline in subcritical 1,1,1,2-tetrafluoroethane (HFC-134a) and supercritical CO2(scCO2). The solubility of L-proline is much higher in HFC-134a fluid than in scCO2. The solubilities of L-proline in HFC-134a and scCO2 are affected by temperature and pressure. The solubilities increase with increasing temperature and pressure for both scCO2 and HFC-134a solvents. The densities of scCO2 and subcritical HFC-134a were calculated using the Peng-Robinson (P-R) equation. Experimentally determined density data were used to assess the accuracy of the P-R equation.
Keywords:Solubility; L-proline; HFC-134a; supercritical CO2
 
 
 

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