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Title: | Why is the CO2-CS2 non-ideality larger than in CO2-CCl4? A Raman scattering study |
Author: | Besnard, M. Cabaco, M. I. Coutinho, J. A. P. Danten, Y. |
Keywords: | INTERACTION-INDUCED SPECTRA LIQUID CARBON-DISULFIDE COMPLEX-FORMATION CS2 MIXTURES DIOXIDE CO2 SOLVENTS TEMPERATURE CO2-ACETONE |
Issue Date: | 2013 |
Publisher: | ELSEVIER SCIENCE BV |
Abstract: | The dense phases of the CO2-CCl4 (I) and CO2-CS2 (II) mixtures have been studied by Raman spectroscopy. Mixture I is found almost ideal and II strongly non-ideal. At high CS2 concentration in II, the local structure of CS2 is preserved suggesting a nano-segregation of the liquid phase without demixing whereas in CO2 concentrated mixtures a diversity of species are present. Thermodynamical considerations together with spectroscopic results show that a subtle interplay between attractive and repulsive interactions leads to this non-ideal behaviour. The connection of these results with the liquid-liquid demixing reported for CO2-CS2 at lower temperature is discussed. (C) 2013 Elsevier B. V. All rights reserved. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19599 |
DOI: | 10.1016/j.cplett.2013.07.061 |
ISSN: | 0009-2614 |
Publisher Version: | 10.1016/j.cplett.2013.07.061 |
Appears in Collections: | CICECO - Artigos |
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Why is the CO2-CS2 non-ideality larger than in CO2-CCl4 A Raman scattering study_10.1016j.cplett.2013.07.061.pdf | 229.53 kB | Adobe PDF |
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