Critical States of Ternary Mixtures and Equations of State

1971 ◽  
Vol 10 (4) ◽  
pp. 588-592 ◽  
Author(s):  
Robert R. Spear ◽  
Robert L. Robinson ◽  
Kwang-Chu Chao
Keyword(s):  
Equations Of State ◽  
Ternary Mixtures ◽  
Critical States

Properties of Refrigerants from Cubic Equations of State

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Viorel Feroiu ◽  
Dan Geana ◽  
Catinca Secuianu
Keyword(s):  
Experimental Data ◽  
Vapor Pressure ◽  
Equations Of State ◽  
Ternary Mixtures ◽  
Volumetric Properties ◽  
Mixing Rules ◽  
Saturation Curve ◽  
Equilibrium Thermodynamic ◽  
Liquid Equilibrium ◽  
Binary And Ternary Mixtures

Vapour � liquid equilibrium, thermodynamic and volumetric properties were predicted for three pure hydrofluorocarbons: difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2 � tetrafluoroethane (R134a) as well as for binary and ternary mixtures of these refrigerants. Three cubic equations of state GEOS3C, SRK (Soave � Redlich � Kwong) and PR (Peng � Robinson) were used. A wide comparison with literature experimental data was made. For the refrigerant mixtures, classical van der Waals mixing rules without interaction parameters were used. The GEOS3C equation, with three parameters estimated by matching several points on the saturation curve (vapor pressure and corresponding liquid volumes), compares favorably to other equations in literature, being simple enough for applications.

Critical States of Mixtures and Equations of State

1969 ◽  
Vol 8 (1) ◽  
pp. 2-8 ◽  
Author(s):  
R. R. Spear ◽  
R. L. Robinson ◽  
K. C. Chao
Keyword(s):  
Equations Of State ◽  
Critical States

scholarly journals Change of refractive indices in ternary mixtures containing chlorobenzene + n-hexane + (n-heptane or n-octane) at 298.15 K

2004 ◽  
Vol 69 (6) ◽  
pp. 461-475 ◽  
Author(s):  
A. Touriño ◽  
M. Hervello ◽  
V. Moreno ◽  
G. Marino ◽  
M. Iglesias
Keyword(s):  
Atmospheric Pressure ◽  
Composition Dependence ◽  
Equations Of State ◽  
Ternary Mixtures ◽  
Fluid Mixing ◽  
Refractive Indices ◽  
Polynomial Equations ◽  
Composition Diagram ◽  
Derived Properties ◽  
Semi Empirical

The refractive indices of ternary mixtures of chlorobenzene + n-hexane (n-heptane or n-octane) have been measured at 298.15 K and at atmospheric pressure over the whole composition diagram. Parameters of polynomial equations which represent the composition dependence of physical and derived properties are gathered. The experimental refractive indices and the ternary derived properties are compared with the data obtained using several predictive semi-empirical models. The use of the Soave?Redlich?Kwong (SRK) and the Peng?Robinson (PR) cubic equations of state with the Van der Waals one-fluid mixing rule, which incorporate different combining rules to predict refractive indices on mixing, are tested against the measured results, good agrement being obtained.

scholarly journals Modelling of volumetric properties of binary and ternary mixtures by CEOS, CEOS/Ge and empirical models

2007 ◽  
Vol 72 (12) ◽  
pp. 1437-1463 ◽  
Author(s):  
Bojan Djordjevic ◽  
Slobodan Serbanovic ◽  
Ivona Radovic ◽  
Aleksandar Tasic ◽  
Mirjana Kijevcanin
Keyword(s):  
Molar Volume ◽  
Excess Molar Volume ◽  
Equations Of State ◽  
Ternary Systems ◽  
Empirical Models ◽  
Ternary Mixtures ◽  
Excess Properties ◽  
Volumetric Properties ◽  
Excess Molar Enthalpy ◽  
Binary And Ternary Mixtures

Although many cubic equations of state coupled with van der Waals-one fluid mixing rules including temperature dependent interaction parameters are sufficient for representing phase equilibria and excess properties (excess molar enthalpy HE, excess molar volume VE, etc.), difficulties appear in the correlation and prediction of thermodynamic properties of complex mixtures at various temperature and pressure ranges. Great progress has been made by a new approach based on CEOS/GE models. This paper reviews the last six-year of progress achieved in modelling of the volumetric properties for complex binary and ternary systems of non-electrolytes by the CEOS and CEOS/GE approaches. In addition, the vdW1 and TCBT models were used to estimate the excess molar volume VE of ternary systems methanol + chloroform + benzene and 1-propanol + chloroform + benzene, as well as the corresponding binaries methanol + chloroform, chloroform + benzene, 1-propanol + chloroform and 1-propanol + benzene at 288.15-313.15 K and atmospheric pressure. Also, prediction of VE for both ternaries by empirical models (Radojkovic, Kohler, Jackob-Fitzner, Colinet, Tsao-Smith, Toop, Scatchard, Rastogi) was performed.

scholarly journals Kelvin’s Dissymmetric Models and Consistency Conditions of Multicomponent Gas-Liquid Equilibrium and Capillary Condensation

2016 ◽  
Vol 2016 ◽  
pp. 1-21
Author(s):  
Mikhail Panfilov ◽  
Alexandre Koldoba
Keyword(s):  
Mathematical Theory ◽  
Equations Of State ◽  
Capillary Condensation ◽  
Ternary Mixtures ◽  
Chemical Components ◽  
Liquid Equilibrium ◽  
Suggested Approach ◽  
New Approach ◽  
Binary And Ternary Mixtures ◽  
Multicomponent Gas

To describe phase equilibrium of mixtures, we develop a nonclassical approach based on using different equations of state for gas and liquid. We show that not all the types of EOS are admissible but only those which verify some specific conditions of consistency. We developed the mathematical theory of this new approach for pure cores and for mixtures, in presence and absence of capillary forces, which leads to explicit analytical relationships for phase concentrations of chemical components. Several examples of comparison with experimental data for binary and ternary mixtures illustrate the feasibility of the suggested approach.

TPT2 and SAFTD equations of state for mixtures of hard chain copolymers

2000 ◽  
Vol 98 (24) ◽  
pp. 2045-2052
Author(s):  
Keshawa P. Shukla, Walter G. Chapman
Keyword(s):  
Equations Of State

Energy saving technology for sintering of black bricks from high-siliceous clay

MRS Advances ◽  
2020 ◽  
Vol 5 (61) ◽  
pp. 3123-3131
Author(s):  
Mario Flores Nicolas ◽  
Marina Vlasova ◽  
Pedro Antonio Márquez Aguilar ◽  
Mykola Kakazey ◽  
Marcos Mauricio Chávez Cano ◽  
...  
Keyword(s):  
Low Temperature ◽  
Oxygen Deficiency ◽  
Glass Ceramics ◽  
Total Content ◽  
Ceramic Materials ◽  
Ternary Mixtures ◽  
High Porosity ◽  
Reducing Conditions ◽  
Binary And Ternary Mixtures ◽  
Dark Color

AbstractThe low-temperature synthesis of bricks prepared from high-siliceous clays by the method of plastic molding of blanks was used. For the preparation of brick blanks, binary and ternary mixtures of high-siliceous clays, black sand, and bottle glass cullet were used. Gray-black low-porosity and high-porosity ceramics was obtained by sintering under conditions of oxygen deficiency. It has been established that to initiate plastic in mixtures containing high-siliceous clay, it is necessary to add montmorillonite/bentonite additives, carry out low-temperature sintering, and introduce low-melting glass additives with a melting point ranging from 750 to 800 °C. The performed investigations have shown that the sintering of mixtures with a total content of iron oxide of about 5 wt% under reducing conditions at Tsint. = 800°C for 8 h leads to the formation of glass ceramics consisting of quartz, feldspars, and a phase. The main sources of the appearance of a dark color is the formation of [Fe3+O4]4- and [Fe3+O6]9- anions in the composition of the glass phase and feldspars. By changing the contents of clay, sand, and glass in sintering, it is possible to obtain two types of ceramic materials: (a) in the form of building bricks and (b) in the form of porous fillers.

Sign in / Sign up

Export Citation Format

Share Document