Density, Viscosity, Surface Tension, and Refractive Index for Binary Mixtures of 1,3-Dimethyladamantane with Four C₁₀ Alkanes

Abstract

For a comprehensive understanding of the properties of 1,3-dimethyladamantane (1,3-DMA) as a new potential candidate of high energy-density hydrocarbon fuels, densities, viscosities, surface tensions, and refractive indices for binary mixtures of 1,3-DMA with each of four C 10 alkanes, n-decane, butylcyclohexane, decalin, and exo-tetrahydrodicyclopentadiene (JP-10), are determined over the whole composition range at different temperatures ranging from (293.15 to 363.15) K and atmospheric pressure (0.1 MPa). The excess molar volume (V m E ), the viscosity deviation (Δη), the surface tension deviation (Δγ), and the refractive index deviation (Δn D ) for these binary systems are calculated. All of the V m E values are negative over the whole composition range for these systems, and they show slight changes against the temperature. The Δη values for the systems except 1,3-DMA + JP-10 are negative, and the absolute values decrease obviously with rising temperature. The Δγ gives clearly negative values for the system of 1,3-DMA + n-decane and shows small values near zero for the other systems. Negligible values of Δn D indicate that the refractive indices show nearly linear additions from those of two components for the binary mixtures. The results could provide important reference information for the development and performance of new high energy-density hydrocarbon fuels.

Application of a General Computer Algorithm Based on the Group-Additivity Method for the Calculation of Two Molecular Descriptors at Both Ends of Dilution: Liquid Viscosity and Activity Coefficient in Water at Infinite Dilution

“…In the present study the viscosity coefficients have been transformed into their decimal logarithm and entered into the group-additivity calculation as log(η). The main sources of experimental viscosity data have been the collective papers of Suzuki et al [5,7] and Katritzky et al [6], supplemented by more recently published experimental results for alkanes [11,12,13,14], haloalkanes [15,16], alkanols [17,18,19,20], alkylamines [21,22,23,24], aminoalcohols [25,26,27], ethers [28,29], aminoethers [30], acetals [31], ketones [32], esters [33,34,35,36,37,38,39,40,41,42,43], hydroxyesters [44,45], carbonate esters [46], and amides [47,48,49,50,51,52]. Beyond these, experimental data have been added for compounds with atom groups that have not yet been represented in the parameters table: phosphoric acid esters [53,54,55], phosphoric acid amides [56], siloxanes [57] and in particular ionic liquids [32,58,59,60,61,62,…”

Density, Viscosity, Speed of Sound, Bulk Modulus, Surface Tension, and Flash Point of Selected Ternary Mixtures of n-Butylcyclohexane + a Linear Alkane (n-Hexadcane or n-Dodecane) + an Aromatic Compound (Toluene, n-Butylbenzene, or n-Hexylbenzene)

“…Equation for best of density of butylcyclohexane is ρ/kg·m 3 = 1127.02 – [1.46341 × T /K] + [1.17912 × 10 –3 × ( T /K) 2 ]. k Reference . l Reference . m Reference . n Reference . Equation for best of density of toluene is ρ/kg·m 3 = 1.18621 × 10 3 – [1.47573 × T /K] + 2.08566 × 10 –3 × ( T /K) 2 – 2.61945 × 10 –6 ( T /K) 3 . o Reference . p Reference . q Reference . r Reference . s Reference . t Reference . u Reference . v Reference . w References and for error. x Reference . y Reference . z Reference . …”

“… a Reference . b Reference . c Reference . d Reference . e Reference . f Reference . g Reference . h Reference . i Reference . j Reference . k Reference . l Reference . m Reference . n Reference . o Reference . p Reference . q Reference . r Reference . s Reference . t Reference . u Reference . v Reference . w Reference . x Reference . y Reference . z Literature values for viscosity of hexylbenzene were converted from mm 2 ·s –1 in ref using density values in the current work. aa Reference . ab Standard uncertainties u are u ( T ) = 0.01 K, expanded uncertainties U c are U c (η) = 0.01 mPa·s. The average pressure P for these measurements was 0.102 MPa with an expanded uncertainty U c ( P ) = 0.002 MPa (level of confidence = 0.95, k = 2). …”

Density and Viscosity of Ternary Mixture of Cyclopentanol + exo-Tetrahydrodicyclopentadiene + 1,3-Dimethyladamantane

“… a Standard uncertainties u ( T ) = 0.01 K, u ( p ) = 0.20 kPa, u r (ρ) = 0.0003, and u r (η) = 0.01. b Ref . c Ref . d Ref . e Ref . f Ref . g Ref . h Ref . i Ref . j Ref . …”