Excess Volumes, Densities, Speeds of Sound, and Viscosities for the Binary Systems of 1-Octanol with Hexadecane and Squalane at (298.15, 303.15 and 308.15) K

Abstract

Excess molar volumes, V E m , excess molar isentropic compressibilities, K E S,m , and deviations of the speeds of sound, u D , from their ideal values u id in an ideal mixture for binary mixtures of 1-octanol, C 8 H 17 OH, with hexadecane, C 16 H 34 , and squalane (2,6,10,15,19,23-hexamethyltetracosane), C 30 H 62 , at T = (298.15, 303.15, and 308.15) K and at atmospheric pressure were derived from experimental density, ρ, and speed-of-sound data, u. Viscosity measurements were also carried out for the same mixtures. The Prigogine-Flory-Patterson (PFP) theory has been applied to analyze V E m of these systems. Furthermore, the apparent molar volumes, V 0 ϕ,i and apparent molar compressibility, K 0 ϕ,i of the components at infinite dilution have been calculated.

Density and speed of sound measurements of hexadecane

“…This simple correlation, with the parameter values A 1 = 2804.158, A 2 = À6.077077, and A 3 = 0.0038984, fits our speed of sound data with an average absolute deviation (AAD) of 0.001% and serves as a baseline against which we can compare our data to those found in the literature [8][9][10][11][12][13][14][15][16][17][18][19]. Figure 3 shows that for data in the same temperature range as ours and at approximately atmospheric pressure, the majority agree with our data within the relative expanded uncertainty of 0.2%.…”

“…h, Our data; s, Aminabhavi [8]; Â, Awwad [9]; , Ball [10]; N, Benson [11]; , Belhouwer [12]. } Bolotnikov [13]; , Dubey [14]; +, Janquera [15]; , Khasanshin [16]; d, Rolling [17]; j, Tardajos [18]; -, Ye [19]. Table 3 Parameters (and their standard deviation, r) of the Rackett correlation (equation (3) (3)) correlated to the present data.…”

Investigation of volumetric fluid properties of (heptane + hexadecane) at reservoir conditions

“…Their optimal recovery from natural deposits depends also on the availability of extensive and accurate knowledge of their thermodynamic properties and, in particular, their phase behavior (Fenghour et al, 2001a). The knowledge of thermophysical properties can assist in understanding the nature, pattern, and extent of molecular interactions/ aggregations in the mixtures of concern (Dubey and Sharma, 2008). Such information can help in further developing the current thermodynamic models, as it is impractical to measure the properties within wide ranges of compositions and operating conditions (Amorim et al, 2007;Haghbakhsh et al, 2013).…”

Evaluation of excess free volume and excess internal pressure of binary liquid mixtures of cyclic ether with 1-alkanols at 303.15K

“…The purity of the solvent was ascertained by comparing the measured density, dynamic viscosities and sound velocity of the pure component at 303.15K with the available literature [17][18][19][20][21][22][23][24][25][26][27][28] as shown in Table 1.…”