期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 41, 期 9, 页码 973-979出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2008.11.012
关键词
Density; Viscosity; Diethylenetriamine (DETA); Excess property; Redlich-Kister
资金
- Indonesia Ministry of National Education
Densities and viscosities of aqueous DETA solutions were measured for the entire concentration range and for the temperature range between (293.15 and 363.15) K. The excess molar volume was determined from the experimental density data whereas the excess Gibbs free energy and the excess entropy of flow were determined from the experimental viscosity data by implementing the theory of rate processes of Eyring. A Redlich-Kister equation was applied to correlate the excess properties such as: the excess molar volume and the excess Gibbs free energy of flow as functions of the DETA mole fraction and temperature. The results showed that the model agree very well with the experimental data. In comparison with AEEA and DEA, the excess properties of DETA are higher than these amines. (C) 2009 Published by Elsevier Ltd.
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