Influence of temperature on thermodynamic properties of substituted aromatic compounds

• Published in: Physics and chemistry of liquids Vol. 48; no. 2; pp. 257 - 271
• Main Authors: Gonzalez-Olmos, R., Iglesias, M., Santos, B.M.R.P, Mattedi, S., Goenaga, J.M., Resa, J.M.
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis Group 01-04-2010; Taylor & Francis Ltd
• Subjects: density; equation of state; free length theory; Theory; Thermodynamics; ultrasonic velocity
• ISSN: 0031-9104; 1029-0451
• DOI: 10.1080/00319100902839145

This work presents experimental liquid densities and ultrasonic velocities for a collection of substituted aromatic compounds (isobutylbenzene, 1,3,5-trimethylbenzene, butylbenzene, isopropylbenzene, p-xylene, m-xylene and o-xylene) at the range of temperature 278.15-323.15 K and atmospheric pressure of a collection of halogenated and aromatic hydrocarbons. Fitting equations were applied to data in order to correlate for later computer-based design. The estimation of the studied properties was made by the application of different theoretical procedures. An equation of state based on the generalised Van der Waals theory which combines the Staverman-Guggenheim combinatorial term of lattice statistics with an attractive lattice gas expression and the free length theory (FLT) showed a good response at the studied conditions.