Densities, viscosities, and refractive indices of the binary systems (PEG200+1,2-propanediol, +1,3-propanediol) and (PEG400+1,2-propanediol, +1,3-propanediol) at (288.15 to 333.15)K and atmospheric pressure: Measurements and modeling

2013 ◽  
Vol 57 ◽  
pp. 510-529 ◽  
Author(s):  
Divna M. Bajić ◽  
Gorica R. Ivaniš ◽  
Zoran P. Visak ◽  
Emila M. Živković ◽  
Slobodan P. Šerbanović ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Binary Systems ◽  
Refractive Indices ◽  
Pressure Measurements

scholarly journals The Study of Excess Refractive Indices of Benzene+Ethanol and Hexane+Ethanol Binary Systems

2020 ◽  
Vol 5 (1) ◽  
pp. 19-23
Author(s):  
Dilbar Bozorova ◽  
Shukur Gofurov ◽  
Kokhkharov A. M. ◽  
Oksana B. Ismailova
Keyword(s):  
Electrical Conductivity ◽  
Mole Fraction ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Weak Interactions ◽  
Cluster Formation ◽  
Molecular Complexes ◽  
Refractive Indices ◽  
Binary Solutions ◽  
Wide Range

In many technological processes, ethanol solvents and their mixtures are actively used to prepare nanostructured matrices, substrates and devices. A change in the concentration of one of the components leads to a change in the structure as a whole, affecting a number of quantities, such as the electrical conductivity of solutions, the diffusion coefficient, and the thermodynamics of processes, which is important to take into account when selecting optimal systems that use new nanomaterials with predetermined properties and characteristics for targeted preparation. The most informative method in the study of structural processes associated with the cluster formation of molecules is the method of refractometry. In this work, the refractive indices measured for binary system benzene+ethanol and hexane+ethanol at the 298.15K and the atmospheric pressure are reported. The refractive indices were measured over a wide range of benzene, hexane and ethanol concentrations (0÷1.0 mole fractions). It has been shown that hetero-molecular complexes in binary solutions are formed through π•••HO bonding at concentration of ~0.4 a mole fraction of benzene and through H-bonding at concentration of ~0.5 mole fraction of hexane. Relatively weak interactions are determined at concentration of ~0.2 and ~0.7 mole fraction of benzene.

scholarly journals Viscosities and refractive indices of binary systems acetone+1-propanol, acetone+1,2-propanediol and acetone+1,3-propanediol

2014 ◽  
Vol 20 (3) ◽  
pp. 441-455 ◽  
Author(s):  
Emila Zivkovic ◽  
Mirjana Kijevcanin ◽  
Ivona Radovic ◽  
Slobodan Serbanovic
Keyword(s):  
Experimental Data ◽  
Refractive Index ◽  
Binary Mixtures ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Refractive Indices ◽  
Mixing Rules ◽  
Viscosity Deviations ◽  
Kister Equation

Viscosities and refractive indices of three binary systems, acetone+1-propanol, acetone+1,2-propanediol and acetone+1,3-propanediol, were measured at eight temperatures (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, 318.15, 323.15)K and at atmospheric pressure. From these data viscosity deviations and deviations in refractive index were calculated and fitted to the Redlich-Kister equation. The viscosity modelling was done by two types of models: predictive UNIFAC-VISCO and ASOG VISCO and correlative Teja-Rice and McAlister equations. The refractive indices of binary mixtures were predicted by various mixing rules and compared with experimental data.

Liquid-liquid equilibrium in binary glycols-toluene and glycols-xylene systems

1982 ◽  
Vol 47 (6) ◽  
pp. 1686-1694 ◽  
Author(s):  
Lumír Mandík ◽  
František Lešek
Keyword(s):  
Atmospheric Pressure ◽  
Binary Systems ◽  
Liquid Equilibrium ◽  
Benzene Toluene

Liquid-liquid equilibria were determined in the following binary systems: 1,2-ethandiol/toluene, 1,2-ethandiol/xylene, 1,2-propandiol/toluene, 1,2-propandiol/xylene, 1,4-butandiol/toluene, 1,4-butandiol/xylene, 1,3-butandiol/toluene, 1,3-butandiol/xylene, 1,3-butandiol/p-xylene, 2,2'-dioxydiethanol/toluene, 2,2'-dioxydiethanol/xylene. The solubility of 2,2-dimethyl-1,3-propandiol in benzene, toluene and xylene was also measured. Critical solubility temperatures at atmospheric pressure were determined for systems containing 1,2-propandiol and 1,3-butandiol.

scholarly journals Nanogap Pirani Sensor Operating in Constant Temperature Mode for Near Atmospheric Pressure Measurements

Proceedings ◽  
2017 ◽  
Vol 1 (4) ◽  
pp. 377
Author(s):  
Cécile Ghouila-Houri ◽  
Ralph Sindjui ◽  
Mohammed Moutaouekkil ◽  
Omar Elmazria ◽  
Quentin Gallas ◽  
...  
Keyword(s):  
Constant Temperature ◽  
Atmospheric Pressure ◽  
Pressure Measurements ◽  
Temperature Mode
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