Journal
JOURNAL OF CHEMICAL THERMODYNAMICS
Volume 43, Issue 10, Pages 1475-1479Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2011.04.021
Keywords
Semi-clathrates; Flue gas; Carbon dioxide; Phase equilibria
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Ernest-Solvay Stiftung, Germany
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The three-phase (vapour + liquid + solid) equilibrium conditions for semi-clathrates formed from three mixtures of (CO2 + N-2), in aqueous solutions of tetra-butyl ammonium bromide (TBAB), were measured in an isochoric reactor. The experiments were conducted at temperatures between (281 and 290) K, at pressures between (1.9 and 5.9) MPa and in aqueous TBAB solutions of M-TBAB = (0.05, 0.10, and 0.20). The experimental results obtained in this study were compared with previously obtained results for gas hydrates, formed from the same three mixtures of (CO2 + N-2) and it was observed that semi-clathrates formed at a substantially lower pressure than did gas hydrates. (C) 2011 Elsevier Ltd. All rights reserved.
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