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Received October 4, 2007
Accepted January 27, 2008
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Excess molar enthalpies for the binary and ternary mixtures of ether compounds (di-isopropyl ether, di-butyl ether, propyl vinyl ether) with ethanol and isooctane at 298.15K
School of Applied Chemical Engineering, Sangju National University, Sangju 742-711, Korea 1Department of Chemical Engineering, Chungnam National University, Daejeon 305-764, Korea
sjpark@cnu.ac.kr
Korean Journal of Chemical Engineering, September 2008, 25(5), 1160-1164(5), 10.1007/s11814-008-0191-2
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Abstract
di-isopropyl ether (1)+isooctane (2), ethanol (1)+isooctane (2), di-butyl ether (1)+ethanol (2), di-butyl ether (1)+isooctane (2), propyl vinyl ether (1)+ethanol (2) and propyl vinyl ether (1)+isooctane (2). These data were obtained by using an isothermal flow calorimeter. The experimental binary HE data were well correlated with the Redlich-Kister model, and infinitely dilute partial excess molar enthalpies for each binary were calculated with the fitted Redlich-Kister parameters. Additionally, the isoclines of HE for ternary systems di-isopropyl ether (1)+ethanol (2)+isooctane (3), di-butyl ether (1)+ethanol (2)+isooctane (3) and propyl vinyl ether (1)+ethanol (2)+isooctane (3) at 298.15 K were calculated by using the Radojkovi equation. HE for all the measured systems in this work shows that mixing is endothermic.
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References
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