scholarly journals Two-phase equilibrium in binary and ternary systems II. The system methane-ethylene III. The system methane-ethane-ethylene

1940 ◽  
Vol 176 (964) ◽  
pp. 140-152 ◽  
Keyword(s):  
Phase Equilibrium ◽  
Ternary System ◽  
Binary Systems ◽  
Ternary Systems ◽  
Two Phase ◽  
Composition Diagram ◽  
Wide Range ◽  
Binary And Ternary Systems

The liquid-vapour equilibrium of the system methane-ethylene has been determined at 0, -42 , -78, -88 and -104° C over a wide range of pressures and the results are shown on a pressure-composition-temperature diagram and by a series of pressure-composition curves. The liquid-vapour equilibrium of the ternary system methane-ethane-ethylene has been determined at -104, -78 and 0° C. Values for the two binary systems methane-ethane and methane-ethylene and for the ternary system methane-ethane-ethylene are shown on a composite pressure-composition diagram.

scholarly journals Two-phase equilibrium in binary and ternary systems - IV. The thermodynamic properties of propane

1940 ◽  
Vol 176 (965) ◽  
pp. 280-294 ◽  
Keyword(s):  
Phase Equilibrium ◽  
Thermodynamic Properties ◽  
Low Temperatures ◽  
Ternary Systems ◽  
Two Phase ◽  
Thermal Data ◽  
Binary And Ternary Systems

Existing physical and thermal data relative to propane have been summarized and correlated, and some new experimental determinations of pressure-volume-temperature relationships for the liquid at low temperatures have been carried out to make good deficiencies in the literature. On the basis of the information thus obtained the entropy and enthalpy of propane have been calculated for conditions of temperature between — 80 and 200° C, and at pressures of from 0.1 to 200 atm. The results are tabulated and also presented graphically on a temperature base.

Two-phase equilibrium in binary and ternary systems - V. Carbon dioxide-ethylene - VI. Carbon dioxide-propylene

1951 ◽  
Vol 209 (1096) ◽  
pp. 1-14 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Phase Equilibrium ◽  
Ternary Systems ◽  
Two Phase ◽  
Plait Point ◽  
Composition Data ◽  
Binary And Ternary Systems ◽  
Critical Constants

The pressure-temperature-composition data for liquid-vapour equilibrium in the systems carbon dioxide-ethylene and carbon dioxide-propylene are given; the former system is shown to form a series of azeotropes. The plait-point curves and critical constants for the two series of mixtures have been determined.

scholarly journals Two-phase equilibrium in binary and ternary systems. I. The system methane-ethane

1939 ◽  
Vol 171 (944) ◽  
pp. 121-136 ◽  
Keyword(s):  
Phase Equilibrium ◽  
Ternary Systems ◽  
Vapour Phase ◽  
Perfect Gas ◽  
Equilibrium Conditions ◽  
Two Phase ◽  
Direct Experiment ◽  
Special Circumstances ◽  
Low Pressures ◽  
Binary And Ternary Systems

The conditions of pressure, temperature and composition under which liquid and vapour mixtures are in equilibrium must generally be determined by direct experiment. The thermodynamical relationships connecting them are applicable only when an accurate equation of state is known for the mixture in both phases, or when special circumstances permit the equations to be simplified, such as when the vapour phase may be considered as a perfect gas, or when the laws of perfect solutions may be expected to hold. At sufficiently low pressures and temperatures some such simplification may frequently be made, but at higher pressures and temperatures, more especially near or above the critical point of one of the components, the data needed to calculate the equilibrium conditions are usually unknown and difficult to ascertain. This can be made clear by deriving, as shortly as possible, the principal thermodynamical relationships for a two-phase binary system.

Two-phase equilibrium in binary and ternary systems VIII. The integral flash latent heat at constant pressure of the system ethylene-carbon dioxide

1951 ◽  
Vol 209 (1097) ◽  
pp. 143-157 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Phase Equilibrium ◽  
Binary Mixture ◽  
Latent Heat ◽  
Constant Pressure ◽  
Ternary Systems ◽  
Experimental Results ◽  
Two Phase ◽  
Margules Equation ◽  
Binary And Ternary Systems

A method of determining the integral flash latent heat of a binary mixture at constant pressure is described and results are given for the system ethylene-carbon dioxide. The experimental results are compared with those calculated from the Duhem-Margules equation.

scholarly journals Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2396 ◽  
Author(s):  
Jinfa Liao ◽  
Hang Wang ◽  
Tzu-Yu Chen
Keyword(s):  
Ternary System ◽  
Binary Systems ◽  
Ternary Phase ◽  
Ternary Systems ◽  
Rich Region ◽  
Space Group ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Backscattered Electron ◽  
Electron Imaging

The phase equilibrium of the Ni–Al–La ternary system in a nickel-rich region was observed at 800 °C and 1000 °C using scanning electron microscopy backscattered electron imaging, energy dispersive X-ray spectrometry and X-ray diffractometry. The solubility of Al in the Ni5La phase was remeasured at 800 °C and 1000 °C. Herein, we report a new ternary phase, termed Ni2AlLa, confirmed at 800 °C. Its X-ray diffraction (XRD) pattern was indexed and space group determined using Total Pattern Solution (TOPAS), and the suitable lattice parameters were fitted using the Pawley method and selected-area electron diffraction. Ni2AlLa crystallizes in the trigonal system with a space group R3 (no. 146), a = 4.1985 Å and c = 13.6626 Å. A self-consistent set of thermodynamic parameters for the Al–La and Ni–La binary systems and the Ni–Al–La ternary system includes a Ni2AlLa ternary phase, which was optimized using the CALPHAD method. The calculated thermodynamic and phase-equilibria data for the binary and ternary systems are consistent with the literature and measured data.

Phase equilibrium of PVAc + CO2 binary systems and PVAc + CO2 + ethanol ternary systems

2018 ◽  
Vol 458 ◽  
pp. 264-271 ◽  
Author(s):  
Teng Zhu ◽  
Houjian Gong ◽  
Mingzhe Dong ◽  
Zehao Yang ◽  
Chunqing Guo ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Binary Systems ◽  
Ternary Systems

scholarly journals Physicochemical Properties of Melts Used for the Electrodeposition of Niobium

2007 ◽  
Vol 62 (9) ◽  
pp. 540-544 ◽  
Author(s):  
Blanka Kubikova ◽  
Vladimir Danek ◽  
Marcelle Gaune-Escard
Keyword(s):  
Surface Tension ◽  
Phase Equilibrium ◽  
Ternary System ◽  
Physicochemical Properties ◽  
Binary Systems ◽  
Limited Solubility

Formation of oxyfluoroniobium compounds in the binary systems KF-Nb2O5 and K2NbF7-Nb2O5 and in the ternary system KF-K2NbF7-Nb2O5 has been expected. Therefore the phase equilibrium and surface tension of the above systems have been determined. The three systems have only been investigated up to 20 mol% Nb2O5 because of its limited solubility. The obtained results have confirmed the formation of oxyfluoroniobium compounds.

scholarly journals Measuring Vapor and Liquid Concentrations for Binary and Ternary Systems in a Microbubble Distillation Unit via Gas Sensors

Chemosensors ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 31
Author(s):  
Nada Abdulrazzaq ◽  
Baseem Al-Sabbagh ◽  
Julia Rees ◽  
William Zimmerman
Keyword(s):  
Binary System ◽  
Ternary System ◽  
Gas Sensors ◽  
Polynomial Regression ◽  
Ternary Systems ◽  
Cost Effective ◽  
Liquid Composition ◽  
Distillation Unit ◽  
Binary And Ternary Systems ◽  
Two Parameter

A cost effective, fast, and accurate technique was needed to measure the vapor composition of a binary system (ethanol-water) and also that of a liquid composition in a ternary system (acetic acid-acetol–water) in a microbubble distillation unit. Cheap TGS-series gas sensors were used for this purpose with both calibrations and measurements carried out in a specially designed chamber. A single parameter polynomial regression was fitted to the binary system, and a two parameter polynomial with an interaction term was fitted to the ternary system. The correlation coefficient, R-squared, was found to be greater than 0.99 for both systems, thus validating the implementation of this novel sensor.

scholarly journals New Features of Entall Database: Comparison of Experimental and Model Formation Enthalpies/ Nowe Funkcje Bazy Danych Entall: Porównanie Doświadczalnych I Modelowych Entalpii Tworzenia

2014 ◽  
Vol 59 (4) ◽  
pp. 1337-1343 ◽  
Author(s):  
A. Debski ◽  
R. Debski ◽  
W. Gasior
Keyword(s):  
Binary Systems ◽  
Direct Synthesis ◽  
Ternary Systems ◽  
Intermetallic Phases ◽  
Enthalpies Of Formation ◽  
Formation Enthalpies ◽  
Structural Tests ◽  
Database Comparison ◽  
Model Formation ◽  
Binary And Ternary Systems

Abstract This paper presents a new version of the Entall database of the thermodynamic properties of metals and their alloys. The changes are related to the thermodynamic data of new binary and ternary systems as well as the integration of the database with an application for the modeling of the formation enthalpies of intermetallic phases with the use of the Miedema model. Using this tool, calculations of the enthalpies of formation of 38 intermetallic phases from 12 binary systems were performed and a comparative analysis conducted. The results of the analysis clearly showed a weak correlation between the model and experimental data. To improve this correlation, an intermediate method of proportional change was proposed, on the basis of the measurement of the enthalpy of formation for one of the phases. The values for the other phases obtained from this indirect method should not deviate much from the experimental ones provided that before the measurements (dissolving or pulping) or after them (direct synthesis), the phase being examined should undergo structural tests, in order to confirm its dominating amount in the samples.

Quantification of supplementary cementitious content in blended Portland cement using an iterative Rietveld–PONKCS technique

2017 ◽  
Vol 50 (2) ◽  
pp. 498-507 ◽  
Author(s):  
Yuri P. Stetsko ◽  
Natallia Shanahan ◽  
Harvey Deford ◽  
A. Zayed
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Binary Systems ◽  
Accurate Determination ◽  
Ternary Systems ◽  
Cementitious Materials ◽  
Iterative Refinement ◽  
Supplementary Cementitious Materials ◽  
Amorphous Content ◽  
Wide Range

An iterative Rietveld–PONKCS (partial or no known crystal structure) technique has been developed for precise and accurate determination of the weight percentages of predominantly amorphous supplementary cementitious materials (SCMs) contained in Portland cement–SCM blends. This technique involves the iterative refinement of the SCM amorphous phase (SCMAP) content, with the separation of the refinement of the SCMAP shape parameters from background refinement. The technique also includes an internal and external standard refinement of both the calibration SCM and the cement–SCM blend. This approach enables the separation of the contributions of the SCMs and the cement to the amorphous content of the cement–SCM blend. The technique has been successfully applied to binary systems of cement–slag and cement–fly ash, and ternary blends of cement–fly ash–slag, over a wide range of cement replacement levels. In the ternary systems, the proposed technique was successfully able to separate the individual amorphous contributions of slag and fly ash to the total amorphous content of the system. The approach was also implemented on a pair of commercially available binary blended cements containing 30% slag and 30% fly ash, respectively.

Sign in / Sign up

Export Citation Format

Share Document