Issue 60, 2016, Issue in Progress

Effect of alkyl and halide moieties on the absorption and stratification of SO2 in tetrabutylammonium halide aqueous solutions

Abstract

Stratification occurs after a reaction between SO2 and tetraalkylammonium halide aqueous solution. To explore the interactions between SO2 and tetraalkylammonium halide, the effects of temperature, concentration, length of alkyl chain, and halide anion on the solubility of SO2 in tetraalkylammonium halide aqueous solutions were investigated. To determine the mechanism of absorption of SO2 by aqueous tetrabutylammonium bromide solution, the composition and concentrations of each component in the upper and lower liquid phase were measured from 283.15 K to 303.15 K. The solubility of SO2 in aqueous tetraalkylammonium halide solutions increased with a corresponding increase in the alkyl chain length and a decrease in temperature. When SO2 was added into the solution by bubbling, SO2 molecules diffused into the clathrate compound of tetrabutylammonium bromide⋯nH2O (TBAB⋯nH2O) hydrate and formed a more stable clathrate inclusion complex.

Graphical abstract: Effect of alkyl and halide moieties on the absorption and stratification of SO2 in tetrabutylammonium halide aqueous solutions

Article information

Article type
Paper
Submitted
03 Mar 2016
Accepted
25 May 2016
First published
26 May 2016

RSC Adv., 2016,6, 55401-55405

Effect of alkyl and halide moieties on the absorption and stratification of SO2 in tetrabutylammonium halide aqueous solutions

E. Duan, P. Zhang, K. Yang, W. Liang, M. Yu, S. Wang and J. Niu, RSC Adv., 2016, 6, 55401 DOI: 10.1039/C6RA05677F

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