TY  - JOUR
AU  - Safarov, Javid
AU  - Bussemer, Christoffer
AU  - Aliyev, Abilgani
AU  - Ivaniš, Gorica
AU  - Kijevčanin, Mirjana
AU  - Radović, Ivona
AU  - Hassel, Egon
AU  - Abdulagatov, Ilmutdin
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4491
AB  - Densities of ionic liquid (IL) 1-octyl-3-methylimidazolium hexafluorophosphate [OMIM][PF6] at high temperatures and high pressures were measured. The measurements were made along 10 isotherms over a temperature range T = 278.15 to 413.15 K, at pressures up to 140 MPa by means of an Anton Paar DMA HPM vibration tube densimeter (VTD). The combined expanded relative uncertainties of the density, pressure and temperature measurements at the 95 % confidence level with a coverage factor of k = 2 are estimated to be 0.03 to 0.08 % (depending on temperature and pressure ranges), 0.1 %, and 0.015 K, respectively. We have critically assessed all of the reported high-pressure densities for [OMIM][PF6], together with the presented results, in order to carefully select primary data for development of a reference wide-ranging equation of state. Values of rho-T isobars curvatures, (partial derivative(2)rho/partial derivative T-2)(n), were estimated using the present high-pressure.-T measurements and they were pretty low (0.78x10(-7) to 1.50.x10(-7) m(3) kg(-1) K-1), indicating that the heat capacity of [OMIM][PF6] very weakly depends on pressure, since (partial derivative C-P/partial derivative P)(T) approximate to approximate to (partial derivative(2)rho/partial derivative T-2)(n). Density data were fitted to the modified Tammann-Tait equation and the multiparametric polynomial-type equation of state (EOS) for the IL was developed using the measured high-pressure and high-temperature (p, rho, T) data. This EOS, together with our previous measured heat capacity data at atmospheric pressure, was used to calculate high-pressure and high-temperature derived thermodynamic properties, such as isothermal compressibility,
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - High-temperature and high-pressure (p, rho, T) measurements and derived thermodynamic properties of 1-octyl-3-methylimidazolium hexafluorophosphate
EP  - 250
IS  - 2
SP  - 237
VL  - 85
DO  - 10.2298/JSC190528076S
ER  - 

@article{
author = "Safarov, Javid and Bussemer, Christoffer and Aliyev, Abilgani and Ivaniš, Gorica and Kijevčanin, Mirjana and Radović, Ivona and Hassel, Egon and Abdulagatov, Ilmutdin",
year = "2020",
abstract = "Densities of ionic liquid (IL) 1-octyl-3-methylimidazolium hexafluorophosphate [OMIM][PF6] at high temperatures and high pressures were measured. The measurements were made along 10 isotherms over a temperature range T = 278.15 to 413.15 K, at pressures up to 140 MPa by means of an Anton Paar DMA HPM vibration tube densimeter (VTD). The combined expanded relative uncertainties of the density, pressure and temperature measurements at the 95 % confidence level with a coverage factor of k = 2 are estimated to be 0.03 to 0.08 % (depending on temperature and pressure ranges), 0.1 %, and 0.015 K, respectively. We have critically assessed all of the reported high-pressure densities for [OMIM][PF6], together with the presented results, in order to carefully select primary data for development of a reference wide-ranging equation of state. Values of rho-T isobars curvatures, (partial derivative(2)rho/partial derivative T-2)(n), were estimated using the present high-pressure.-T measurements and they were pretty low (0.78x10(-7) to 1.50.x10(-7) m(3) kg(-1) K-1), indicating that the heat capacity of [OMIM][PF6] very weakly depends on pressure, since (partial derivative C-P/partial derivative P)(T) approximate to approximate to (partial derivative(2)rho/partial derivative T-2)(n). Density data were fitted to the modified Tammann-Tait equation and the multiparametric polynomial-type equation of state (EOS) for the IL was developed using the measured high-pressure and high-temperature (p, rho, T) data. This EOS, together with our previous measured heat capacity data at atmospheric pressure, was used to calculate high-pressure and high-temperature derived thermodynamic properties, such as isothermal compressibility,",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "High-temperature and high-pressure (p, rho, T) measurements and derived thermodynamic properties of 1-octyl-3-methylimidazolium hexafluorophosphate",
pages = "250-237",
number = "2",
volume = "85",
doi = "10.2298/JSC190528076S"
}

Safarov, J., Bussemer, C., Aliyev, A., Ivaniš, G., Kijevčanin, M., Radović, I., Hassel, E.,& Abdulagatov, I.. (2020). High-temperature and high-pressure (p, rho, T) measurements and derived thermodynamic properties of 1-octyl-3-methylimidazolium hexafluorophosphate. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 85(2), 237-250.
https://doi.org/10.2298/JSC190528076S

Safarov J, Bussemer C, Aliyev A, Ivaniš G, Kijevčanin M, Radović I, Hassel E, Abdulagatov I. High-temperature and high-pressure (p, rho, T) measurements and derived thermodynamic properties of 1-octyl-3-methylimidazolium hexafluorophosphate. in Journal of the Serbian Chemical Society. 2020;85(2):237-250.
doi:10.2298/JSC190528076S .

Safarov, Javid, Bussemer, Christoffer, Aliyev, Abilgani, Ivaniš, Gorica, Kijevčanin, Mirjana, Radović, Ivona, Hassel, Egon, Abdulagatov, Ilmutdin, "High-temperature and high-pressure (p, rho, T) measurements and derived thermodynamic properties of 1-octyl-3-methylimidazolium hexafluorophosphate" in Journal of the Serbian Chemical Society, 85, no. 2 (2020):237-250,
https://doi.org/10.2298/JSC190528076S . .