Experimental measurement and modeling of solubility of LiBr and LiNO3 in methanol, ethanol, 1-propanol, 2-propanol and 1-butanol

• DOI: 10.1016/j.fluid.2011.03.017
• Publication Date: 2011-05-25T21:01:32Z
• Authors: Mi-Yi Li; Li-Sheng Wang; Kun-Peng Wang; Bo Jiang; Jürgen Gmehling
• Keywords: 01 natural sciences; 0104 chemical sciences

Abstract The solubility of lithium bromide and lithium nitrate in solvents methanol, ethanol, 1-propanol, 2-propanol and 1-butanol were measured in the range between 298.15 and 338.15 K using an analytical gravimetric method. An empirical equation was used to fit the experimental solubilities and the Pitzer model with inclusion of Archer's ionic strength was used for the calculation of osmotic coefficients. The experimental data of system pressures (p) for the correlation of LiBr + ethanol, LiBr + 2-propanol at T (298.15–333.15 K) and LiNO3 + ethanol at T (298.15–323.15 K) were obtained from published literatures. Moreover, the parameters of the Pitzer model were re-correlated and were used to predict mean ion activity coefficients. A procedure was also presented to predict the solubility products of salts in pure organic solvent.