Density and Viscosity Measurements of 1-Dodecanol and 1,12-Dodecanediol at Temperatures of up to 573.15 K and Pressures of up to 10 MPa

Abstract

The density and viscosity of liquid 1-dodecanol and 1,12dodecanediol were reported, which were obtained simultaneously by using a vibrating-wire viscometer. The measurements were determined at temperatures from 298.15 to 573.15 K for 1-dodecanol and 373.15 to 573.15 K for 1,12dodecanediol and at pressures from 0.1 to 10 MPa. The combined expanded uncertainties (k = 2) of the reported data for density and viscosity were estimated to be 0.26% and 2.1%, respectively. The density and viscosity data obtained in this work were correlated with the Tait-type equation and Andrade−Tait equation, respectively. The average absolute percentage deviation of the density data from the correlations were 0.08% for 1-dodecanol and 0.06% for 1,12-dodecanediol, and the average absolute percentage deviation of the viscosity data from the correlations were 0.64% for 1-dodecanol and 0.67% for 1,12-dodecanediol. The correlations were also used to compare the present results with the available literature data. An acceptable agreement between the present results and the literature data was observed. Finally, the derived properties of isobaric expansibility and isothermal compressibility were derived based on the Tait-type equation of this work.

A Geometric Approach for the Calculation of the Nonrandomness Factor Using Computational Chemistry

“…In this work, a combination of the DFT hybrid functional B3LYP , with the basis set 6-311++G was used. The molecules were considered to be in a cavity within a liquid solvent composed of molecules of their own, and solvation was described according to the Polarizable Continuum Model (PCM). − This model is used to simulate the solute cavity via a set of overlapping spheres and requires the knowledge of dielectric constants, refractive indices, densities, and molar masses for each chemical species, which can be seen in Table S2, − in the Supporting Information. In addition, after the geometry optimization, a population analysis of the electrons was performed using the Natural Bond Orbital (NBO) function to determine orbital electronic densities and the consequent electrical charge distribution.…”

Measurements and Predictive Models for the Viscosity of Coal-Based Kerosene at Temperatures up to 673 K and Pressures up to 40 MPa

“…Some high-temperature and high-pressure (HTHP) viscosity measurement methods have been validated, such as vibrating-wire, , rolling ball, dynamic light scattering, and capillary method. , By comparing these methods, the capillary method is found to be used most frequently. Viscosity measurements in HTHP conditions are considerably difficult and few data points are available.…”

“…5 The temperature near the wall of the regenerative cooling channel can exceed 700 K, and the pressure at the fuel pump outlet can be as high as 100 MPa. 6 Some high-temperature and high-pressure (HTHP) viscosity measurement methods have been validated, such as vibrating-wire, 7,8 rolling ball, 9 dynamic light scattering, 10 and capillary method. 11,12 By comparing these methods, the capillary method is found to be used most frequently.…”