Volumetric study of (2-methoxyethanol + tetrahydrofuran + cyclohexane) at T=298.15 K |
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Institution: | 1. Institute of Solid State Physics, Graz University of Technology, Austria;2. Institute of Experimental Physics, Graz University, Austria;3. KP Technology Ltd., Scotland, United Kingdom;4. Institute of Physics, Montanuniversitaet Leoben, Austria |
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Abstract: | The excess molar volumes VmE at T=298.15 have been determined in the whole composition domain for (2-methoxyethanol + tetrahydrofuran + cyclohexane) and for the parent binary mixtures. Data on VmE are also reported for (2-ethoxyethanol + cyclohexane). All binaries showed positive VmE values, small for (methoxyethanol + tetrahydrofuran) and large for the other ones. The ternary VmE surface is always positive and exhibits a smooth trend with a maximum corresponding to the binary (2-methoxyethanol + cyclohexane). The capabilities of various models of either predicting or reproducing the ternary data have been compared. The behaviour of VmE and of the excess apparent molar volume of the components is discussed in both binary and ternary mixtures. The results suggest that hydrogen bonding decreases with alcohol dilution and increases with the tetrahydrofuran content in the ternary solutions. |
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