Liquid鈥揕iquid Extraction Systems of Benzoic Acid in Water and Heptane, Methylbenzene, or Trichloroethylene as Cosolvent

详细信息    查看全文

• 作者：F. Visscher ; W. A. Gaakeer ; P. Granados Mendoza ; M. H. J. M. de Croon ; J. van der Schaaf ; J. C. Schouten
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2011
• 出版时间：September 8, 2011
• 年：2011
• 卷：56
• 期：9
• 页码：3630-3636
• 全文大小：825K
• 年卷期：v.56,no.9(September 8, 2011)
• ISSN：1520-5134

文摘

Equilibrium data at (293 卤 2) K are presented for benzoic acid in water and three different organic phases (heptane, methylbenzene, and trichloroethylene). The monomeric partition constant, K_P^MON, and the dimerization constant, K_D, for the organic phase were determined at 293 K. For the heptane/water benzoic acid system, K_P^MON equals (0.209 卤 0.049) m³_AQ路m^鈥?_ORG, and K_D equals (1.33 卤 0.68) m³路mol^鈥?. For the methylbenzene/water benzoic acid system, K_P^MON equals (1.17 卤 0.92) m³_AQ路m^鈥?_ORG, and K_D equals (0.39 卤 0.64) m³路mol^鈥?. For the trichloroethylene/water benzoic acid system, K_P^MON equals (0.808 卤 0.295) m³_AQ路m^鈥?_ORG, and K_D equals (1.18 卤 0.89) m³路mol^鈥?. Equilibrium constants were obtained from UV鈥搗is spectroscopy and conductivity experiments. The equilibrium data of these extraction systems can be used to quantify liquid鈥搇iquid mass transfer rates with extraction systems that require low flammability risk (trichloroethylene), low costs (methylbenzene), or setups constructed from polymethyl methacrylate (heptane).