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Issue 60, 2016, Issue in Progress
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Effect of alkyl and halide moieties on the absorption and stratification of SO2 in tetrabutylammonium halide aqueous solutions

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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

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Publication details

The article was received on 03 Mar 2016, accepted on 25 May 2016 and first published on 26 May 2016


Article type: Paper
DOI: 10.1039/C6RA05677F
Citation: RSC Adv., 2016,6, 55401-55405
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    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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