Solubility of Dilute SO2 in the Binary System Poly Ethylene Glycol 300 + Dimethyl Sulfoxide at T = 298.15 K and p = 123.15 kPa and Mixtures鈥?Excess Properties at T = (2

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• 作者：Bo Guo ; Jianbin Zhang ; Qiang Li ; Lihua Li ; Huiyan Ma ; Qiancheng Zhang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2014
• 出版时间：August 14, 2014
• 年：2014
• 卷：59
• 期：8
• 页码：2413-2422
• 全文大小：496K
• ISSN：1520-5134

文摘

Gas鈥搇iquid equilibrium (GLE) data were determined for dilute SO₂ in the binary system poly ethylene glycol 300 (PEG) (1) + dimethyl sulfoxide (DMSO) (2) at T = 298.15 K and p = 123.15 kPa, and SO₂ partial pressures were found from (0 to 122) Pa. The GLE compositions were determined with u_r(C_SO2) = 卤 0.6 % for the liquid phase SO₂ concentration and u_r(z_SO2) = 卤 5 % for the gas phase SO₂ volume fraction. The measurement showed that dilute SO₂ solubility in the PEG + DMSO mixtures decreased with the increasing PEG concentration. In the whole composition range, the pure DMSO showed the strongest solubility capability for dilute SO₂ with 0.0756 mol路kg^鈥? and the solubility of SO₂ in PEG was 0.0100 mol路kg^鈥? when the gas phase SO₂ concentration (z_SO2) was set at z_SO2 = 5路10^鈥?. In addition, the paper also reported densities and viscosities for the binary system PEG (1) + DMSO (2) as a function of composition. Based on the experimental density and viscosity data at T = (298.15 to 318.15) K, the excess molar volumes and viscosity deviations were calculated, and the calculated results were fitted to a Redlich鈥揔ister equation to obtain the coefficients and estimate the standard deviations. Based on the kinematic viscosity values, enthalpy of activation for viscous flow and entropy of activation for the viscous flow were also calculated.