Solubility Properties and Spectral Investigation of Dilute SO2in a Triethylene Glycol + Water + La3+ System

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• 作者：Qiang Li ; Jianbin Zhang ; Lihua Li ; Zhiqiang He ; Xiaoxia Yang ; Yongfeng Zhang ; Zhenhua Guo ; Qiancheng Zhang
• 刊名：The Journal of Physical Chemistry B
• 出版年：2013
• 出版时间：May 9, 2013
• 年：2013
• 卷：117
• 期：18
• 页码：5633-5646
• 全文大小：565K
• 年卷期：v.117,no.18(May 9, 2013)
• ISSN：1520-5207

文摘

Isothermal gas鈥搇iquid equilibrium (GLE) data were determined for dilute SO₂ in a triethylene glycol (TEG) + water (W) system (TEGW) at 298.15 K and 123.15 kPa, in which SO₂ partial pressures were calculated in the range 0鈥?30 Pa. When La³⁺ was added into TEGWs, GLE data suggested that adding of La³⁺ ion markedly increased the solubility of dilute SO₂. By fitting of these data, Henry鈥檚 law constants (HLC) were obtained. For acquiring the important absorption mechanism, UV, FTIR, ¹H NMR, and fluorescence spectra in absorption processes of SO₂ were investigated. On the basis of these spectral results, the possibility of intermolecular hydrogen bond formation by hydroxyl oxygen atoms in the TEG molecule with hydrogen atoms in the H₂O molecule and S路路路O interaction formation by hydroxyl oxygen atoms in the TEG molecule with the sulfur atom in the SO₂ molecule was discussed.