Solubility and Spectral Studies for SO2 in a Binary System of Triethylene Glycol + Dimethyl Sulfoxide at T = (298.15, 303.15, and 308.15) K and p = 123.15 kPa

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• 作者：Xianshu Qiao ; Tianxiang Zhao ; Bo Guo ; Feng Sha ; Fei Zhang ; Xiaohong Xie ; Jianbin Zhang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2016
• 出版时间：April 14, 2016
• 年：2016
• 卷：61
• 期：4
• 页码：1597-1607
• 全文大小：513K
• 年卷期：0
• ISSN：1520-5134

文摘

In this work, isothermal gas–liquid equilibrium (GLE) data were measured for the mixture SO₂ + N₂ in the system of triethylene glycol (TEG) + dimethyl sulfoxide (DMSO) at T = (298.15, 303.15, and 308.15) K and p = 123.15 kPa. Henry’s law constants (HLCs) were obtained by fitting the linear slope of the GLE data. The results indicated that the solubility of dilute SO₂ in the system of TEG + DMSO increased with the increasing DMSO concentrations, and HLCs decreased with the increasing temperatures. The regeneration experimental results showed that the absorption of SO₂ in the binary system was reversible, and the solvent could be reused without significant loss of absorption capacity. Additionally, FTIR, UV–vis, and ¹H NMR spectral results indicated that intermolecular hydrogen bonding association among TEG, DMSO, and SO₂ molecules was formed.