title: Solubility properties and spectral investigation of dilute SO2 in a triethylene glycol + water + La3+ system.
abstract: Isothermal gas-liquid 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 0-130 Pa. When La(3+) was added into TEGWs, GLE data suggested that adding of La(3+) ion markedly increased the solubility of dilute SO2. By fitting of these data, Henry's law constants (HLC) were obtained. For acquiring the important absorption mechanism, UV, FTIR, (1)H 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···O interaction formation by hydroxyl oxygen atoms in the TEG molecule with the sulfur atom in the SO2 molecule was discussed.
authors: College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China.
authors: Qiang
authors: Q
authors: Li
authors: Jianbin
authors: J
authors: Zhang
authors: Lihua
authors: L
authors: Li
authors: Zhiqiang
authors: Z
authors: He
authors: Xiaoxia
authors: X
authors: Yang
authors: Yongfeng
authors: Y
authors: Zhang
authors: Zhenhua
authors: Z
authors: Guo
authors: Qiancheng
authors: Q
authors: Zhang
mesh_terms: D007811:Lanthanum / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D012995:Solubility; D013056:Spectrophotometry, Ultraviolet / Q000295:instrumentation; D013458:Sulfur Dioxide / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D013458:Sulfur Dioxide; C028914:triethylene glycol; D011092:Polyethylene Glycols; D007811:Lanthanum