Solubility properties and spectral investigation of dilute SO2 in a triethylene glycol + water + La3+ system.

TitleSolubility properties and spectral investigation of dilute SO2 in a triethylene glycol + water + La3+ system.
Publication TypeJournal Article
Year of Publication2013
AuthorsLi Q, Zhang J, Li L, He Z, Yang X, Zhang Y, Guo Z, Zhang Q
JournalThe journal of physical chemistry. B
Volume117
Issue18
Pagination5633-46
Date Published2013 May 9
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.

DOI10.1002/asia.201301040
Alternate JournalJ Phys Chem B