Experimental and theoretical study of interactions between a ketone and a series of 2-alkanol using Kirkwood-Buff method

Document Type : Original Article

Authors

1 Department of Applied Chemistry, Faculty of Science, Malayer University, Malayer, 65174, Iran

2 Faculty member of Malayer University

Abstract

In this paper, the interaction between methyl ethyl ketone and some types of alcohols (2-propanol, 2- butanol, 2-pentanol, 2- hexanol and 2-heptanolol) was studied using an empirical method along with Kirkwood-Buff integrals and the of preferential solvation phenomenon. For binary systems including methyl ethyl ketone with 2-alkanol, the parameters Gii, Gjj, Gij, δii, δjj, and δij were calculated at 298.18 K and interpreted based on the structure and type of bond formed in solutions. The results were discussed based on molecular interactions and the effect of carbon chain lengths of alcohol. In general, it can be concluded that the interactions in the mixtures are weaker than the pure state, and with the increase in the length of the alcohol chain, these interactions become weaker because, as the chain length increases, the nonpolar part of the molecule increases. The results obtained from the Kirkwood-Buff integrals were confirmed using experimental values of excess molar volumes.

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References

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Applied Chemistry Today
Volume 15, Issue 55
June 2020
Pages 25-36

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