Density and Viscosity for the Ternary Mixtures of 1,3,5-Trimethyladamantane + 1,2,3,4-Tetrahydronaphthalene +n-octanol and Corresponding Binary Systems at T = (293.15 to 343.15) K

The ability of the DISQUAC model for predicting excess enthalpies (HE) of ternary systems on the basis of binary parameters only, i.e., neglecting ternary interactions is analyzed. At this end, DISQUAC results for a set of 95 ternary systems are examined. The solutions studied are formed by only hydrocarbons (or CCl4); or by one polar compound (not alcohols) and two hydrocarbons (or CCl4); or by two polar compounds (not alcohols) and one hydrocarbon (or CCl4); or by one alcohol and two hydrocarbons (or CCl4). Most of the HEs analyzed are endothermic, and valid at 298.15 K and atmospheric pressure. The mean deviation between experimental values and DISQUAC results is 5.5% for the ternary systems and 6.5% for the constituent binaries (181 mixtures). The interaction parameters used are valid for the description of thermodynamic properties of binary systems: vaporliquid equilibria (VLE), liquidliquid (LLE), and solidliquid equilibria (SLE), HE and excess heat capacities at constant pressure (CEP), as well as HE and VLE of ternary solutions. Predictions are, in most of the cases, independent of the mixture compounds, or the number of groups present in the system. Larger deviations underline typical shortcomings of the group contributions methods (e.g., Patterson's effect; branching). Note that results for the ternaries and for the constituent binaries are of the same order. This is not the case for the Dortmund version of UNIFAC. The mean deviations obtained using this model are 10.5% and 14% for the ternary and binary mixtures, respectively. Results from other models (original UNIFAC, Flory's theory, NittaChao, UNIQUAC association model) for a number of systems are also compared to those obtained using DISQUAC.Key words: predictions, HE, ternary systems, binary parameters, geometrical methods, Flory, group contributions.

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THE EQUILIBRIUM DIAGRAMS, HEATS OF MIXING, DIPOLE MOMENTS, DENSITIES, AND BOILING POINTS OF THE SYSTEM ACETONE–CHLOROFORM–BENZENE

Canadian Journal of Chemistry ◽

10.1139/v61-089 ◽

1961 ◽

Vol 39 (4) ◽

pp. 735-744 ◽

Cited By ~ 13

Author(s):

A. N. Campbell ◽

E. M. Kartzmark ◽

H. Friesen

Keyword(s):

Solid State ◽

Boiling Point ◽

Binary Systems ◽

Dipole Moments ◽

Equilibrium Diagram ◽

Ternary Mixtures ◽

Heat Of Mixing ◽

High Concentration ◽

Boiling Points ◽

Heats Of Mixing

The equilibrium diagrams show that a compound, stable in the solid state, is formed in the system chloroform–acetone, but no compound is formed in the binary systems chloroform–benzene and acetone–benzene. The ternary equilibrium diagram, the heats of mixing, and the dipole moments, all show that this compound continues to exist in the presence of benzene, up to a high concentration of benzene. Since a series of ternary mixtures is shown to exist having zero heat of mixing, it was thought that this series of mixtures might behave in a pseudoideal manner, but the determinations of density (molar volume) and boiling point show that this is not so.

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Binary and Ternary Mixtures of Eicosane with Fatty Alcohols and Fatty Acids as Phase Change Material for Building Applications

مجلة جامعة فلسطين التقنية للأبحاث ◽

10.53671/ptukrj.v6i2.63 ◽

2018 ◽

Vol 6 (2) ◽

pp. 16-22

Author(s):

Rabab Jarrar ◽

Reyad Sawafta

Keyword(s):

Fatty Acids ◽

Phase Change ◽

Binary Systems ◽

Phase Change Materials ◽

Capric Acid ◽

Cetyl Alcohol ◽

Fatty Alcohols ◽

Ternary Mixtures ◽

Stable Phase ◽

Binary And Ternary Mixtures

Stable phase change materials (PCMS ) of binary and ternary mixtures of organic compounds were prepared in this work to be installed in buildings for purposes of heat energy storage. Binary mixtures of PCMS as salt hydrates, paraffins were heavily investigated but most of the mixing was within the same group very few articles deal with mixing PCMS from different organic groups or mixing more than two materials. A preparation and a differential scanning calorimetry ( DSC) investigation of binary and ternary mixtures of eicosane with fatty alcohols and fatty acids were performed. The eutectic mixtures of the binary systems were determined to be( 70% eicosane – 30% cetyl alcohol ) , (50% eicosane – 50% lauric acid) and (25% eicosane – 75% capric acid ) with melting temperature and latent heat of ( 33.77 ºC , 237.6 J/g ) , ( 30.63 ºC , 207.7 J/g ) and ( 24.96 ºC , 200.3 J/g ) respectively . The last one is very suitable for building applications. An eutectic mixture of eicosane with myristyl alcohol from previous work was considered as a new material and used to prepare two ternary mixtures( for the first time in literature) with both Cetyl Alcohol and Capric acid . An exciting results of temperatures were obtained : 26.86 ºC for the first ternary mixture and 16.23 ºC for the second one with moderate latent heats of 133.5 J/g and 157.7 J/g. The first one is very suitable for building applications and the second one is suitable for low thermal applications .These results will open the door to try ternary mixtures of common phase change materials to obtain various melting temperatures to suit different applications

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Binary and Ternary Mixtures of Eicosane with Fatty Alcohols and Fatty Acids as Phase Change Material for Building Applications

مجلة جامعة فلسطين التقنية للأبحاث ◽

10.53671/pturj.v6i2.63 ◽

2018 ◽

Vol 6 (2) ◽

pp. 16-22

Author(s):

Rabab Jarrar ◽

Reyad Sawafta

Keyword(s):

Fatty Acids ◽

Phase Change ◽

Binary Systems ◽

Phase Change Materials ◽

Capric Acid ◽

Cetyl Alcohol ◽

Fatty Alcohols ◽

Ternary Mixtures ◽

Stable Phase ◽

Binary And Ternary Mixtures

Stable phase change materials (PCMS ) of binary and ternary mixtures of organic compounds were prepared in this work to be installed in buildings for purposes of heat energy storage. Binary mixtures of PCMS as salt hydrates, paraffins were heavily investigated but most of the mixing was within the same group very few articles deal with mixing PCMS from different organic groups or mixing more than two materials. A preparation and a differential scanning calorimetry ( DSC) investigation of binary and ternary mixtures of eicosane with fatty alcohols and fatty acids were performed. The eutectic mixtures of the binary systems were determined to be( 70% eicosane – 30% cetyl alcohol ) , (50% eicosane – 50% lauric acid) and (25% eicosane – 75% capric acid ) with melting temperature and latent heat of ( 33.77 ºC , 237.6 J/g ) , ( 30.63 ºC , 207.7 J/g ) and ( 24.96 ºC , 200.3 J/g ) respectively . The last one is very suitable for building applications. An eutectic mixture of eicosane with myristyl alcohol from previous work was considered as a new material and used to prepare two ternary mixtures( for the first time in literature) with both Cetyl Alcohol and Capric acid . An exciting results of temperatures were obtained : 26.86 ºC for the first ternary mixture and 16.23 ºC for the second one with moderate latent heats of 133.5 J/g and 157.7 J/g. The first one is very suitable for building applications and the second one is suitable for low thermal applications .These results will open the door to try ternary mixtures of common phase change materials to obtain various melting temperatures to suit different applications

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Study of density and viscosity for ternary mixtures biodiesel+diesel fuel + bioalcohols

Analele Universitatii Ovidius Constanta - Seria Chimie ◽

10.2478/v10310-012-0009-2 ◽

2012 ◽

Vol 23 (1) ◽

pp. 58-62 ◽

Cited By ~ 2

Author(s):

Irina Nita ◽

Sibel Geacai

Keyword(s):

Diesel Fuel ◽

Internal Combustion Engines ◽

Binary Systems ◽

Butyl Alcohol ◽

Ternary Mixtures ◽

Transport Sector ◽

Combustion Engines ◽

Market Demand ◽

Ternary Blends ◽

Near Future

AbstractThe increase of the environment pollution, together with the instable price of crude oil led in the last years to a renewed focus on biofuels. As the demand in the transport sector is continuously increasing, and taking into account the benefits of biofuels, it is expected that the market demand for biofuels to be increased in the near future. In this context, it will be interesting to investigate if new types of biofuels could be used as mixtures with other fuels for internal combustion engines. The aim of this paper is the study of density and viscosity variation with composition and temperature for ternary mixtures biodiesel + diesel fuel + bioalcohol. Experimental densities and viscosities data for ternary blends diesel fuel+biodiesel +isopropyl alcohol/1-butyl alcohol are presented, and some empirical models proposed to predict these properties for binary systems diesel fuel+biodiesel are evaluated for the proposed ternary blends.

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Experimental Data of Fluid Phase Equilibria- Correlation and Prediction Models: A Review

Processes ◽

10.3390/pr7050277 ◽

2019 ◽

Vol 7 (5) ◽

pp. 277 ◽

Cited By ~ 8

Author(s):

Urszula Domańska

Keyword(s):

Phase Equilibria ◽

Binary Systems ◽

Prediction Models ◽

Research Work ◽

Ternary Mixtures ◽

Excess Gibbs Free Energy ◽

Future Research ◽

Published Data ◽

Gas Liquid Chromatography ◽

Excess Molar Enthalpy

The examples of phase equilibria in binary systems, solid/liquid (SLE), liquid/liquid (LLE), vapor/liquid (VLE), as well as liquid/liquid equilibria in ternary systems mainly containing ionic liquids (ILs), or the infragrance materials, or pharmaceuticals with molecular organic solvents, such as an alcohol, or water, or hydrocarbons, are presented. The most popular correlation methods of the experimental phase equilibrium data are presented, related to the excess Gibbs free energy models such as Wilson, universal-quasichemical, UNIQUAC and non-random two-liquid model, NRTL as well as several popular theories for the modeling of the phase equilibria and excess molar enthalpy, HE in binary or ternary mixtures are presented: the group contribution method (Mod. UNIFAC) and modified UNIFAC model for pharmaceuticals and lattice theory based on non-random hydrogen bonding (NRHB). The SLE, LLE, or VLE and HE of these systems may be described by the Perturbed-Chain Polar Statistical Associating Fluid Theory (PC-SAFT), or a Conductor-like Screening Model for Real Solvents (COSMO-RS). The examples of the application of ILs as extractants for the separation of aromatic hydrocarbons from alkanes, sulfur compounds from alkanes, alkenes from alkanes, ethylbenzene from styrene, butan-1-ol from water phase, or 2-phenylethanol (PEA) from water are discussed on the basis of previously published data. The first information about the selectivity of extrahent for separation can be obtained from the measurements of the limiting activity coefficient measurements by the gas–liquid chromatography technique. This review outlines the main research work carried out over the last few years on direct measurements of phase equilibria, or HE and limiting activity coefficients, the possibility of thermodynamic modeling with emphasis on recent research achievements and potential for future research.

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Thermodynamics of organic mixtures containing amines. IV. Systems with aniline

Canadian Journal of Chemistry ◽

10.1139/v05-190 ◽

2005 ◽

Vol 83 (10) ◽

pp. 1812-1825 ◽

Cited By ~ 38

Author(s):

Juan Antonio González ◽

Ismael Mozo ◽

Isaías García de la Fuente ◽

José Carlos Cobos

Keyword(s):

Binary Systems ◽

Ternary Systems ◽

Ternary Mixtures ◽

Excess Enthalpies ◽

Dipolar Interactions ◽

Organic Mixtures ◽

Molar Excess ◽

Binary And Ternary Mixtures ◽

Benzene Toluene ◽

Vapor Liquid Equilibria

Binary mixtures of aniline with benzene, toluene, alkane, alkanol, or N,N-dialkylamide have been investigated in the framework of the DISQUAC model. The reported interaction parameters change regularly with the molecular structure of the mixture components. The model consistently describes a set of thermodynamic properties including liquidliquid equilibria, vaporliquid equilibria, and molar excess enthalpies. The two latter properties for ternary systems are well-represented by DISQUAC using binary parameters only (i.e., neglecting ternary interactions). A comparison of DISQUAC results and those obtained from the UNIFAC (Dortmund version) and ERAS models is also shown. The experimental molar excess enthalpies for binary and ternary mixtures are better described by DISQUAC than by UNIFAC. ERAS fails when representing molar excess enthalpies of those binary systems including methanol or ethanol. This may be due to the existence of strong dipolar interactions among aniline molecules as well as to effects related to the equation of state term, evaluated comparing molar excess enthalpies, and molar excess internal energies at constant volume. The study of the aniline systems in terms of the concentrationconcentration structure factor also underlines the importance of dipolar interactions in solutions with alkanes or alcohols, which may be due to the high polarizability of the aniline molecule.Key words: thermodynamics, mixtures, aniline, dipolar interactions, structural effects.

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The Feasibility of Binary and Ternary Hydrate Mixtures of CH4, CO2 and C3H8 for Metals Removal

10.21203/rs.3.rs-962392/v1 ◽

2021 ◽

Author(s):

Hani Abulkhair ◽

Abdulmohsen Alsaiari ◽

Iqbal Ahmad ◽

Sirisha Nallakukkala ◽

Bhajan Lal ◽

...

Keyword(s):

Driving Force ◽

Binary Systems ◽

Hydrate Formation ◽

Ternary Systems ◽

High Water ◽

Ternary Mixtures ◽

Water Recovery ◽

Gas Composition ◽

Metals Removal ◽

Binary And Ternary Mixtures

Abstract The selection of suitable hydrate formers and their respective gas composition for high hydrate formation driving force is critical to achieve high water recovery and metals removal efficiency in the hydrate-based desalination process. This study presents a feasibility analysis on the possible driving force and subcooling temperatures for the binary and ternary mixtures of methane, carbon dioxide, and propane for hydrates-based desalination process. The driving force and subcooling of the gas systems was evaluated by predicting their hydrate formation phase boundary conditions in 2 wt.% NaCl systems at pressures ranges from 2.0 - 4.0 MPa and temperatures of 1 – 4°C using Modified Peng-Robinson Equation of State in the PVTSim software package. The results suggested that the driving force of CH4-C3H8 and CO2+C3H8 binary systems are similar to their ternary. Thus, the use of binary systems is preferable and simpler than the ternary systems. For binary gas composition CO2+C3H8 (70:30) exhibited a higher subcooling temperature of 8.07 ºC and driving force of 1.49 MPa in presence of 2wt% salt. In case of ternary system (CH4-C3H8-CO2) composition of (10:80:10) provided a good subcooling temperature of 12.86 ºC for hydrate formation. The results favour CO2-C3H8 as preferred hydrate formers for hydrate- based desalination. This is attributed due to the formation of sII structure and as it constitutes 136 water molecules which signifies a huge potential of producing more quantity of treated water.

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Some Results of the Spectroscopic Study of Four Close Binary Systems of Early Spectral Types

International Astronomical Union Colloquium ◽

10.1017/s025292110002755x ◽

1965 ◽

Vol 5 ◽

pp. 120-130

Author(s):

T. S. Galkina

Keyword(s):

Spectroscopic Study ◽

Spectral Type ◽

Spectroscopic Investigation ◽

Binary Systems ◽

Quantitative Information ◽

Close Binary ◽

Physical Parameters ◽

Absorption And Emission ◽

Close Binary Systems ◽

Quantitative Estimates

It is necessary to have quantitative estimates of the intensity of lines (both absorption and emission) to obtain the physical parameters of the atmosphere of components.Some years ago at the Crimean observatory we began the spectroscopic investigation of close binary systems of the early spectral type with components WR, Of, O, B to try and obtain more quantitative information from the study of the spectra of the components.

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Quasi-Periodic Oscillations in Dwarf Novae

International Astronomical Union Colloquium ◽

10.1017/s0252921100073310 ◽

1979 ◽

Vol 46 ◽

pp. 77-88

Author(s):

Edward L. Robinson

Keyword(s):

Binary Systems ◽

Outer Edge ◽

Light Curves ◽

Close Binary ◽

Bright Spot ◽

Dwarf Novae ◽

Periodic Oscillations ◽

High Frequencies ◽

Short Period ◽

Typical Time

Three distinct kinds of rapid variations have been detected in the light curves of dwarf novae: rapid flickering, short period coherent oscillations, and quasi-periodic oscillations. The rapid flickering is seen in the light curves of most, if not all, dwarf novae, and is especially apparent during minimum light between eruptions. The flickering has a typical time scale of a few minutes or less and a typical amplitude of about .1 mag. The flickering is completely random and unpredictable; the power spectrum of flickering shows only a slow decrease from low to high frequencies. The observations of U Gem by Warner and Nather (1971) showed conclusively that most of the flickering is produced by variations in the luminosity of the bright spot near the outer edge of the accretion disk around the white dwarf in these close binary systems.

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