scholarly journals The Addition of N-Butanol in Ethanol-Isooctane Mixture to Reduce Vapor Pressure of Oxygenated-Gasoline Blend

2017 ◽  
Vol 17 (3) ◽  
pp. 500 ◽  
Author(s):  
Rendra Panca Anugraha ◽  
Zul Akbar Andi Picunang ◽  
Annas Wiguno ◽  
Rizky Tetrisyanda ◽  
Kuswandi Kuswandi ◽  
...  
Keyword(s):  
Experimental Data ◽  
Ternary System ◽  
Vapor Pressure ◽  
Binary Systems ◽  
Experimental Results ◽  
Ideal Solution ◽  
Positive Deviation ◽  
Relative Deviation ◽  
Wilson Model ◽  
Binary Parameter

In this work, vapor pressure of binary systems for isooctane + ethanol, isooctane + n-butanol and ethanol + n-butanol and ternary system for isooctane + ethanol + n-butanol were measured in the temperature range from 313.15 to 318.15 K using the inclined ebulliometer. The experimental results showed that the existence of n-butanol in isooctane decreases the vapor pressure of mixture, while increasing n-butanol fraction in ternary isooctane-ethanol-n-butanol mixture decreased vapor pressure of mixture. Experimental data for binary systems studied were correlated with Wilson, NRTL and UNIQUAC models with average relative deviation (ARD) of 3.5%. The optimized binary parameter pairs obtained in this work were used to estimate the ternary system. The Wilson model gave the best performance for estimation of ternary system with ARD of 5.4%. All systems studied showed non-ideal solution with positive deviation from Raoult’s law.

Influence of Nano-Refrigeration-Oil on Saturated Vapor Pressure of R22

2011 ◽  
Vol 694 ◽  
pp. 309-314 ◽  
Author(s):  
Jiang Feng Lou ◽  
Rui Xiang Wang ◽  
Min Zhang
Keyword(s):  
Experimental Data ◽  
Vapor Pressure ◽  
Mass Fraction ◽  
Saturated Vapor Pressure ◽  
Saturated Vapor ◽  
Experimental Results ◽  
Vapor Pressures ◽  
Temperature Range ◽  
Mass Fractions

The saturated vapor pressures of R22 uniformly mixed with refrigeration oil and nano- refrigeration-oil were measured experimentally at a temperature range from 263 to 333K and mass fractions from 1 to 5%. The experimental results showed that the saturated vapor pressure of R22/KT56 mixture was lower than that of pure R22; the pressure deviation between them increased with a raising mass fraction of refrigeration oil and temperature. After adding nano-NiFe2O4 and nano-fullerene into KT56, the pressure deviation increased at the same mass fraction and temperature. A saturated vapor pressure correlation for R22 and refrigeration oil/nano-refrigeration-oil mixture was proposed, and the calculated values agreed with the experimental data within the deviation of ± 0.77%.

Correlation and Prediction of Vapor-Liquid Equilibrium for the Propylene Oxide-Ethanol-Water Ternary System

2011 ◽  
Vol 396-398 ◽  
pp. 973-976
Author(s):  
Cheng Xue Wang ◽  
Rui Xia Jiang
Keyword(s):  
Experimental Data ◽  
Ternary System ◽  
Propylene Oxide ◽  
Binary Systems ◽  
Molar Fraction ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Vle Data ◽  
Consistency Verification ◽  
Vapor Liquid

The vapor-liquid equilibrium (VLE) data for the binary systems ethanol-water (1), propylene oxide (PO)-ethanol (2), PO-water (3) and the ternary system PO-ethanol-water (4) were determined at 101.3kPa. The binary VLE data measured passed the thermodynamic consistency verification. The experimental VLE data of the binary systems were correlated with the nonrandom two-liquid (NRTL) models. The results show that the values of molar fraction of the ternary system (4) in vapor phase from the binary NRTL parameters agree well with the experimental data.

Thermodynamic Analysis of the Fe-Mn-P Ternary Phase Diagram by Combining the First-Principles and CALPHAD Methods

2007 ◽  
Vol 561-565 ◽  
pp. 1899-1902 ◽  
Author(s):  
T. Tokunaga ◽  
N. Hanaya ◽  
Hiroshi Ohtani ◽  
Mitsuhiro Hasebe
Keyword(s):  
Experimental Data ◽  
Phase Diagram ◽  
Ternary System ◽  
Thermodynamic Analysis ◽  
First Principles ◽  
Binary Systems ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
First Principles Calculations ◽  
The Enthalpy Of Formation

A thermodynamic analysis of the Fe-Mn-P ternary system has been carried out using the CALPHAD method. Among the three binary systems relevant to this ternary phase diagram, the thermodynamic parameters of the Mn-P binary system were evaluated in this study. The enthalpy of formation of the binary phosphides obtained from our first-principles calculations was utilized in the present analysis to compensate for the lack of available experimental data. The thermodynamic descriptions of the Fe-Mn and Fe-P binary systems were taken from previous studies. The phase equilibria in the Fe-Mn-P ternary system were analysed based on the experimental data on the phase boundaries. The calculated phase diagrams are in agreement with the experimental results.

scholarly journals Calculation of the thermodynamic properties of liquid Ag-In-Sb alloys

2006 ◽  
Vol 71 (3) ◽  
pp. 203-211 ◽  
Author(s):  
Dragana Zivkovic ◽  
Dragan Manasijevic ◽  
Ivan Mihajlovic ◽  
Zivan Zivkovic
Keyword(s):  
Experimental Data ◽  
Liquid Phase ◽  
Thermodynamic Properties ◽  
Ternary System ◽  
Interaction Parameter ◽  
Thermodynamic Data ◽  
Binary Systems ◽  
Ternary Interaction Parameter ◽  
Ternary Interaction ◽  
Mutual Agreement

The results of calculations of the thermodynamic properties of liquid Ag-In-Sb alloys are presented in this paper. The Redlich-Kister-Muggianu model was used for the calculations. Based on known thermodynamic data for constitutive binary systems and available experimental data for the investigated ternary system, the ternary interaction parameter for the liquid phase in the temperature range 1000-1200 K was determined. Comparison between experimental and calculated results showed their good mutual agreement.

Exzeßenthalpien und Solvatationsverhalten der Systeme LiBr/Methanol, ZnBr2/Methanol und LiBr/ZnBr2/Methanol

1982 ◽  
Vol 37 (3) ◽  
pp. 224-231
Author(s):  
M. Christahl ◽  
J. Thönnissen
Keyword(s):  
Experimental Data ◽  
Ternary System ◽  
Coordination Number ◽  
Binary Systems ◽  
Excess Enthalpy ◽  
Enthalpies Of Solution ◽  
Solvation Number ◽  
Enthalpies Of Mixing ◽  
Mathematical Approximation

Abstract For the binary systems Li Br/methanol and Zn Br 2/methanol as well as for the ternary system Li Br/Zn Br 2/methanol the integral enthalpies of mixing are experimentally determined. The mixing of Li Br and methanol is more exothermic than in the case of Zn Br 2. The excess enthalpy is largest for the ternary system. From the mathematical approximation of experimental data the differential enthalpies of solution and of dilution are obtained. In the discussion it is concluded that in diluted solutions the salts are surrounded by a strongly coordinated inner solvation sphere (coordination number N = 4) and a less coordinated outer solvation sphere (N = 6) resulting in a total solvation number of N = 10.

Saturated vapour pressures of the ternary system urea-ammonium nitrate-water

1983 ◽  
Vol 48 (8) ◽  
pp. 2130-2140
Author(s):  
Jiřina Hejtmánková ◽  
Lidmila Bartovská ◽  
Marie Šišková ◽  
Lubomír Jäger
Keyword(s):  
Experimental Data ◽  
Ternary System ◽  
Ammonium Nitrate ◽  
Binary Systems ◽  
Isopiestic Method ◽  
Saturated Vapour ◽  
Liquid Solutions ◽  
Urea Ammonium Nitrate ◽  
Standard Solutions

Saturated vapour pressures of the ternary liquid solutions of urea and ammonium nitrate in water were investigated by the isopiestic method at 15, 25 and 35 °C. The measurements were carried out within the concentrations that are measurable by means of the NaCl standard solutions (i.e. up to the NaCl molality 6 mol/kg). The experimental data are correlated in terms of isotonic solutions of the urea-water and ammonium nitrate-water binary systems.

scholarly journals Thermodynamic calculations in ternary titanium-aluminium-manganese system

2008 ◽  
Vol 73 (4) ◽  
pp. 499-506 ◽  
Author(s):  
Ana Kostov ◽  
Dragana Zivkovic
Keyword(s):  
Experimental Data ◽  
Thermodynamic Properties ◽  
Ternary System ◽  
Thermodynamic Analysis ◽  
Experimental Results ◽  
Thermodynamic Calculations ◽  
Thermodynamic Optimization ◽  
Gibbs Energies ◽  
Different Temperatures ◽  
Titanium Aluminium

Thermodynamic calculations in the ternary Ti-Al-Mn system are shown in this paper. The thermodynamic calculations were performed using the FactSage thermochemical software and database, with the aim of determining thermodynamic properties, such as activities, coefficient of activities, partial and integral values of the enthalpies and Gibbs energies of mixing and excess energies at two different temperatures: 2000 and 2100 K. Bearing in mind that no experimental data for the Ti-Al-Mn ternary system have been obtained or reported. The obtained results represent a good base for further thermodynamic analysis and may be useful as a comparison with some future critical experimental results and thermodynamic optimization of this system.

scholarly journals Vapor Pressure of Saturated Aqueous Solutions of Potassium Sulfate from 310 K to 345 K

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Matias O. Maggiolo ◽  
Francisco J. Passamonti ◽  
Abel C. Chialvo
Keyword(s):  
Experimental Data ◽  
Vapor Pressure ◽  
Aqueous Solutions ◽  
Water Activity ◽  
Experimental Evaluation ◽  
Experimental Results ◽  
Potassium Sulfate ◽  
Temperature Range ◽  
Analytical Expressions

The experimental evaluation of the vapor pressure of saturated aqueous solutions of potassium sulfate was carried out in the range of temperatures 310 K≤T≤345 K. The experimental data were used to determine the corresponding values of the water activity in such solutions. The analytical expressions as a function of temperature of both, vapor pressure and water activity, were obtained from the correlation of the experimental results. The vapor pressure expression was also extrapolated to a different temperature range in order to make a comparison with the results obtained by other authors.

Physico-chemical properties of the ternary system urea-ammonium nitrate-water. Density

1983 ◽  
Vol 48 (4) ◽  
pp. 1097-1103
Author(s):  
Ludmila Bartovská ◽  
Jiřina Hejtmánková ◽  
Marie Šišková ◽  
Lubomír Jäger
Keyword(s):  
Experimental Data ◽  
Ternary System ◽  
Ammonium Nitrate ◽  
Binary Systems ◽  
Chemical Properties ◽  
Water Density ◽  
Physico Chemical ◽  
Temperature Dependences ◽  
Urea Ammonium Nitrate

Density of the ternary system urea-ammonium nitrate-water was measured in the range of overall concentrations 0-75 mass % at temperatures of 0, 20, 30 and 40 °C. The experimental data are compared with the values calculated from the relation obtained by combining the temperature dependences of densities of the binary systems urea-water and ammonium nitrate-water.

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.

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