Densities, viscosities and excess properties of bis-2,4,4-trimethylpentylphosphinic acid (Cyanex 272)+diluent binary mixtures at 298.15 K and atmospheric pressure

2007 ◽  
Vol 135 (1-3) ◽  
pp. 179-187 ◽  
Author(s):  
R.K. Biswas ◽  
H.P. Singha
Keyword(s):  
Binary Mixtures ◽  
Atmospheric Pressure ◽  
Excess Properties ◽  
Cyanex 272

Comparative study of the thermodynamic behaviour of the binary mixtures dimethyl carbonate + (benzene, n-heptane, cyclohexane, or toluene)

2002 ◽  
Vol 80 (4) ◽  
pp. 370-378 ◽  
Author(s):  
José M Pardo ◽  
Diego González-Salgado ◽  
Clara A Tovar ◽  
Claudio A Cerdeiriña ◽  
Enrique Carballo ◽  
...  
Keyword(s):  
Binary Mixtures ◽  
Atmospheric Pressure ◽  
Dimethyl Carbonate ◽  
Heat Capacities ◽  
Excess Properties ◽  
Speeds Of Sound ◽  
Thermodynamic Behaviour ◽  
Thermal Expansivities ◽  
Isentropic And Isothermal Compressibilities ◽  
Excess Quantities

Isobaric molar heat capacities at 288.15, 298.15, and 308.15 K and densities and speeds of sound at 288.15, 293.15, 298.15, and 308.15 K were determined for the dimethyl carbonate + benzene system over the whole composition range and at atmospheric pressure. In addition, speeds of sound at the same temperatures for the dimethyl carbonate + n-heptane system are reported. These experimental data were used to obtain molar volumes, isobaric thermal expansivities, isentropic and isothermal compressibilities, and isochoric molar heat capacities. Excess quantities of the above-mentioned properties were calculated using the Benson and Kiyohara criterion. The thermodynamic behaviour of the dimethyl carbonate + (n-heptane, cyclohexane, benzene, or toluene) systems is comparatively analyzed.Key words: binary mixtures, excess properties, dimethyl carbonate, benzene, hydrocarbon.

scholarly journals Thermophysical properties of binary mixtures of N,N-dimethylformamide with three cyclic ethers

2013 ◽  
Vol 78 (9) ◽  
pp. 1443-1460 ◽  
Author(s):  
Biswajit Sinha ◽  
Rajendra Pradhan ◽  
Sanjoy Saha ◽  
Dhiraj Brahman ◽  
Abhijit Sarkar
Keyword(s):  
Ambient Temperature ◽  
Binary Mixtures ◽  
Atmospheric Pressure ◽  
Excess Molar Volumes ◽  
Partial Molar Volumes ◽  
Excess Properties ◽  
Pfp Theory ◽  
Liquid Component ◽  
Molar Volumes ◽  
Excess Partial Molar Volumes

Densities and viscosities of the binary mixtures consisting of tetrahydrofuran (THF), 1,3-dioxolane (1,3-DO) and 1,4-dioxane (1,4-DO) with N,N-dimethylformamide (DMF) over the entire range of composition were measured at temperatures 298.15, 308.15 and 318.15 K and at atmospheric pressure. Ultrasonic speeds of sound of these binary mixtures were measured at ambient temperature and atmospheric pressure (T = 298.15 K and P = 1.01?105 Pa). The various experimental data were utilized to derive excess molar volumes (VmE), excess viscosities (?E), and excess isentropic compressibilities (?sE). Using the excess molar volumes (VmE), excess partial molar volumes (and ) and excess partial molar volumes at infinite dilution (and ) of each liquid component in the mixtures were derived and discussed. Excess molar volumes (VmE) as a function of composition at ambient temperature and atmospheric pressure were used further to test the applicability of the Prigogine-Flory-Patterson (PFP) theory to the experimental binaries. The excess properties were found to be either negative or positive depending on the nature of molecular interactions and structural effects of liquid mixtures. Em,1V Em,2VE0,m,1VE0,m,2V.

Study on physicochemical and excess properties of [HEMIM][Ala] with DMSO/H2O binary mixtures

2021 ◽  
pp. 117491
Author(s):  
Yue Zhao ◽  
Chun Guo ◽  
Yuao Li ◽  
Jian Wang ◽  
Jing Tong
Keyword(s):  
Binary Mixtures ◽  
Excess Properties

scholarly journals A Comparison Study on Molecular Interaction of an Acidic Organophosphoric Extractant with Substituted Aromatic Hydrocarbon (p-xylene/toluene) at 303.15K

2020 ◽  
Vol 11 (3) ◽  
pp. 10052-10058
Keyword(s):  
Binary Mixtures ◽  
Ultrasonic Velocity ◽  
Aromatic Hydrocarbons ◽  
Molecular Interaction ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Isentropic Compressibility ◽  
Extraction Process ◽  
Comparison Study ◽  
Intermolecular Free Length

In the present study, the excess molar volume (VE) and the deviations in intermolecular free length (ΔLf), isentropic compressibility (Δβs), acoustic impedance (ΔZ), and ultrasonic velocity (ΔU) were calculated using the experimentally measured values of density (ρ) and ultrasonic velocity (U) of binary mixtures of an acidic organophosphoric extractant (DEHPA) with two substituted aromatic hydrocarbons, i.e., p-xylene and toluene at 303.15K and atmospheric pressure, 0.1MPa over the entire composition range of DEHPA. The results of both binary mixtures have been presented graphically and compared in terms of molecular interaction between unlike molecules of the mixtures, which outcome may be applied in the solvent extraction process.

Sign in / Sign up

Export Citation Format

Share Document