A global fundamental equation of state for normal hexane in the critical region

被引：4

作者：

Abbaci, Azzedine ^{[1
]}

Rizi, Aicha ^{[1
]}

Abdulagatov, Ilmutdin M. ^{[2
]}

机构：

[1] Univ Badji Mokhtar, Dept Chim, Fac Sci, Lab Synthese & Biocatalyse Organ,Unite Thermodyna, Sidi Amar 23000, Annaba, Algeria

[2] Russian Acad Sci, Inst Phys, Dagestan Sci Ctr, Makhachkala 367005, Dagestan, Russia

来源：

THERMOCHIMICA ACTA | 2013年 / 567卷

关键词：

Critical region; Equation of state; Hexane; Specific heat; Caloric; THERMODYNAMIC PROPERTIES; CROSSOVER FUNCTIONS; N-HEXANE; FLUIDS; NONPOLAR; BEHAVIOR;

D O I：

10.1016/j.tca.2013.01.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In our previous work [S. Azzouz, A. Rizi, A. Acidi, A. Abbaci, St. Cerc. St. CICBIA 11 (2) (2010) 235-241], we developed an interim thermodynamic property formulation for the supercritical n-hexane which incorporates non-analytic scaling laws in the critical region and reproduces the thermodynamic properties of n-hexane far away from the critical region. However, it appears that this equation of state gives unphysical values for critical amplitudes such as that of the compressibility above the critical point. In this work, we present a modification of this equation of state based on the pressure data of Grigoriev et al. group and those of Abdulagatov, the isochoric specific heat data of Amirkhanov et al. as well as the isobaric specific heat of Gerasimov et al. Comparison with different sets of thermodynamic-property data available is given. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：65 / 72

页数：8

共 26 条

[1] Thermodynamic properties of ethane in the critical region
Abbaci, A
[J]. JOURNAL OF MOLECULAR LIQUIDS, 2005, 118 (1-3) : 31 - 36
[2] Abbaci A, 2004, INT J THERMOPHYS, V25, P739, DOI 10.1023/B:IJOT0000034235.06616.97
[3] Abbaci A., 1991, THESIS U MARYLAND CO, p[52, 3121]
[4] Abdulagatov I. M., 1999, THERMODYNAMIC PROPER
[5] PVTx measurements and crossover equation of state of pure n-hexane and dilute aqueous n-hexane solutions in the critical and supercritical regions
Abdulagatov, IM
Bazaev, AR
Magee, JW
Kiselev, SB
Ely, JF
[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (06) : 1967 - 1984
[6] Amirkhanov Kh. I., 1981, ISOCHORIC HEAT CAPAC
[7] Azzouz S., 2010, ST CERC ST CICBIA, V11
[8] BERVILLIER C, 1980, PHYS REV B, V21, P5427, DOI 10.1103/PhysRevB.21.5427
[9] Experimental study of the one-, two-, and three-phase isochoric heat capacities of n-hexane plus water mixtures near the lower critical line. Part II. Krichevskii parameter and thermodynamic and structural properties
Bezgomonova, Elena I.
Abdulagatov, Ilmutdin M.
Stepanov, Gennadii V.
[J]. JOURNAL OF MOLECULAR LIQUIDS, 2012, 175 : 12 - 23
[10] GLOBAL THERMODYNAMIC BEHAVIOR OF FLUIDS IN THE CRITICAL REGION
CHEN, ZY
ABBACI, A
TANG, S
SENGERS, JV
[J]. PHYSICAL REVIEW A, 1990, 42 (08): : 4470 - 4484

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