Binary Mixtures of n -Alkylcyclohexanes with Decane: Densities and Speeds of Sound between 288.15 and 333.15 K and Viscosities between 293.15 and 323.15 K at 0.1 MPa
Year: 2024
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Herein are reported the densities, viscosities, and speeds of sound of two-component mixtures of decane with n -alkylcyclohexanes (methyl, ethyl, n -propyl, n -butyl, n -pentyl, n -hexyl, n -heptyl, n -decyl, and n -dodecyl) and their corresponding excess molar volumes ( V m E ), excess speeds of sound ( c E ), excess isentropic compressibilities (Κ s E ), and viscosity deviations (Δη). Monotonic increases in mixture densities, viscosities, and speeds of sound were found as the concentration of the component with the higher property value increased and as the temperature decreased. V m E ’s, c E ’s, K s E ’s, and Δη’s ranged from −0.44 to 0.14 cm·mol –1, −1.4 to 16.7 m·s –1, −19.1 to 2.7 TPa –1, and −0.05 to 0.35 mPa·s, respectively. As the n -alkylcyclohexane size increased, the mixture’s V m E ’s and K s E ’s decreased and their c E ’s increased at 293.15 K. For mole fractions of 0.5, the n -hexylcyclohexane/decane mixture had the smallest Δη of all the mixtures at 293.15 K. The signs of V m E and K s E were the same for each mixture, suggesting that the systems with reduced volumes were less compressible and the systems with enhanced volumes were more compressible than the respective space taken up by the individual components. The V m E ’s, c E ’s, K s E ’s, and Δη’s of the decane mixtures followed trends that are consistent with these n -alkylcyclohexanes mixtures with other linear alkanes.
Authors: Dianne J. Luning Prak, Jim S. Cowart
Institution: United States Naval Academy
Language: English
Subfield: Fluid Flow and Transfer Processes
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Funder: Office of Naval Research
Award: G6341003829
OpenAlex ID: W4401735002