<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Thermophysical properties of 1-butyl-3-methylimidazolium dicyanamide [BMIM][DCA] {(<italic>p</italic>, ρ, <italic>T</italic>) data at <italic>T</italic> = (283.15 to 393.15) K, pressures up to <italic>p</italic> =100 MPa, and viscosity at <italic>T</italic> = (283.15 to 373.15) K and <italic>p</italic> = 0.101 MPa} are reported with an estimated experimental relative combined standard uncertainty of Δρ/ρ = ±(0.01 to 0.08) % in density and Δη/η = ±0.35 % in dynamic viscosity. The measurements were carried out with a recently constructed Anton-Paar DMA HPM vibration-tube densimeter and a fully automated SVM 3000 Anton-Paar rotational Stabinger viscometer. The vibration-tube densimeter was calibrated using double-distilled water, methanol, toluene and aqueous NaCl solutions.</p><p>An empiric equation of state for fitting of the (<italic>p</italic>, ρ, <italic>T</italic>) data of [BMIM][DCA] has been developed as a function of pressure and temperature. This equation was used for the calculation of thermomechanical properties of the IL, such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient and internal pressure. Viscosity measurements were fitted to the polynomial equation.</p></abstract>

Thermophysical properties of 1-butyl-3-methylimidazolium dicyanamide [BMIM][DCA] {(p, ρ, T) data at T = (283.15 to 393.15) K, pressures up to p =100 MPa, and viscosity at T = (283.15 to 373.15) K and p = 0.101 MPa} are reported with an estimated experimental relative combined standard uncertainty of Δρ/ρ = ±(0.01 to 0.08) % in density and Δη/η = ±0.35 % in dynamic viscosity. The measurements were carried out with a recently constructed Anton-Paar DMA HPM vibration-tube densimeter and a fully automated SVM 3000 Anton-Paar rotational Stabinger viscometer. The vibration-tube densimeter was calibrated using double-distilled water, methanol, toluene and aqueous NaCl solutions.An empiric equation of state for fitting of the (p, ρ, T) data of [BMIM][DCA] has been developed as a function of pressure and temperature. This equation was used for the calculation of thermomechanical properties of the IL, such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient and internal pressure. Viscosity measurements were fitted to the polynomial equation.

Thermal properties of 1-butyl-3-methylimidazolium dicyanamide at high pressures and temperatures

Institute of Technical Thermodynamics, University of Rostock, Albert-Einstein-Str. 2, D-18059 Rostock, Germany

Department of Heat and Refrigeration Techniques, Azerbaijan Technical University, H. Javid Avn. 25, AZ1073 Baku, Azerbaijan

Lehrstuhl fúr Technische Thermodynamik, Universitát Rostock, Albert-Einstein-Str.2, D-18059, Rostock, Germany

Acta Chimica Slovaca

Thermophysical properties of 1-butyl-3-methylimidazolium dicyanamide [BMIM][DCA] {(p, ρ, T) data at T = (283.15 to 393.15) K, pressures up to p =100 MPa, and...

Thermal properties of 1-butyl-3-methylimidazolium dicyanamide at high pressures and temperatures

Published Online: May 14, 2012

Page range: 86 - 94

DOI: https://doi.org/10.2478/v10188-012-0014-2

Keywords
Density, viscosity, vibration tube densimeter, equation of state, isothermal compressibility

This content is open access.

Thermal properties of 1-butyl-3-methylimidazolium dicyanamide at high pressures and temperatures

Published Online: May 14, 2012

Page range: 86 - 94

DOI: https://doi.org/10.2478/v10188-012-0014-2

KeywordsDensity, viscosity, vibration tube densimeter, equation of state, isothermal compressibility

This content is open access.

Keywords
Density, viscosity, vibration tube densimeter, equation of state, isothermal compressibility