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Journal articles on the topic 'Redlich-Kister'

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Published: 4 June 2021
Last updated: 12 February 2022

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1

Howald, Reed A. "Redlich-Kister: De facto standard." Journal of Chemical Education 67, no. 7 (July 1990): 629. http://dx.doi.org/10.1021/ed067p629.3.

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2

Kasprzycka-Guttman, Teresa, and Juan H. Vera. "Heats of mixing of binary mixtures of pyridine base with n-alkane." Canadian Journal of Chemistry 66, no. 7 (July 1, 1988): 1625–27. http://dx.doi.org/10.1139/v88-263.

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Heats of mixing of 2,4-lutidine and 2,4,6-collidine with n-alkanes were measured at 293.15 K using an isothermal dilution calorimeter. Experimental results were fitted with a Redlich–Kister polynomial. Experimental data and coefficients for the Redlich–Kister polynomials are reported.
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3

Näfe, Helfried. "Chemical Potential vs. Gibbs Free Energy Relationship by Redlich and Kister and the Redlich-Kister Polynomial." International Journal of Thermodynamics 17, no. 4 (December 4, 2014): 250. http://dx.doi.org/10.5541/ijot.575.

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4

Hillert, Mats. "Partial Gibbs energies from Redlich-Kister polynomials." Thermochimica Acta 129, no. 1 (June 1988): 71–75. http://dx.doi.org/10.1016/0040-6031(88)87198-3.

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5

Wierzba, Bartek, and Marek Danielewski. "Composition Dependent Diffusivities in Multi-Component Systems." Defect and Diffusion Forum 312-315 (April 2011): 127–31. http://dx.doi.org/10.4028/www.scientific.net/ddf.312-315.127.

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The modified Redlich-Kister approximation of the composition dependent intrinsic diffusivities in the multicomponent solid solution is presented. The effective computation method (the inverse problem) combines the Hierarchical Genetic Strategy with real number encoding (HGS-FP) with the modified Redlich-Kister approximation. The Cu–Ni–Fe alloys at 1271 K are analyzed. We show that the measured intrinsic diffusivities, the estimated from available diffusivity data and calculated by inverse method are in agreement. The presented method may become a very effective tool when the diffusion multiple technique is considered.
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6

HARDEY BEAVER, W., and JIM L. TURPIN. "TERNARY EXTRACTION MODELING USING THE REDLICH-KISTER EXPANSION." Chemical Engineering Communications 33, no. 5-6 (March 1985): 277–86. http://dx.doi.org/10.1080/00986448508911175.

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7

Salhi, Hanen, Shaik Babu, Nada Al-Eidan, Nejib H. Mekni, Noura Omar Al-Otaibi, Khadija Y. Alqahtani, Nuhed A. Al-Omair, and Noureddine Ouerfelli. "On the reduced Redlich-Kister excess properties for 1,2-dimethoxyethane with propylene carbonate binary mixtures at temperatures (from 298.15 to 318.15) K." Mediterranean Journal of Chemistry 6, no. 2 (January 5, 2017): 33–41. http://dx.doi.org/10.13171/mjc62/01701061439-salhi.

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Values of excess properties in 1,2-dimethoxyethane + propylene carbonate binary liquid mixtures at different temperatures from experimental density and viscosity values presented in earlier work, were used to test the applicability of the correlative reduced Redlich-Kister functions and the Belda equation, and to reveal eventual specific interaction hidden by the classical treatment of direct excess Redlich-Kister functions. Their correlation ability at different temperatures, and the use of different numbers of parameters, is discussed for the case of limited experimental data. The relative Redlich-Kister functions are important to reduce the effect of temperature and, consequently, to reveal the effects of different types of interactions. Values of limiting excess partial molar volume at infinite dilution deduced from different methods were discussed. Also, the activation parameters and partial molar Gibbs free energy of activation of viscous flow against compositions were investigated. Correlation between the two Arrhenius parameters of viscosity shows the existence of main different behaviors separated by a stabilized structure in a short range of mole fraction in 1,2-dimethoxyethane (0.45 to 0.83). In this context, the correlation Belda equation has also been applied to the present system for thermodynamic properties in order to reveal eventual solute-solvent interaction at high dilution.
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8

Yang, Xuzhao, Hao Song, Jun Wang, and Wenyuan Zou. "Temperature and composition dependence of the density, viscosity and refractive index of binary mixtures of a novel gemini ionic liquid with acetonitrile." RSC Advances 6, no. 35 (2016): 29172–81. http://dx.doi.org/10.1039/c5ra27934h.

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9

Kotova, Natalia, Natalia Golovata, and Natalia Usenko. "Modelling thermodynamic properties of binary Cu–Eu and ternary Al–Cu–Eu melts." French-Ukrainian Journal of Chemistry 8, no. 2 (2020): 73–82. http://dx.doi.org/10.17721/fujcv8i2p73-82.

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Model calculations of the whole set of thermodynamic properties of liquid alloys for the binary Cu–Eu and ternary Al–Cu–Eu systems have been performed. Authors used the ideal associated solution model (IAS model) for calculation of the entropies and excess Gibbs energies of mixing for these systems. The binaries were given as the Redlich-Kister polynomials. The thermodynamic properties for the ternary system are described using the Redlich-Kister-Muggianu formalism. A comparison of the surfaces of excess Gibbs energy and entropy of mixing for liquid Al–Cu–Eu alloys at 1350 K demonstrates that the ordering related to the formation of rather strong associates in the Al–Eu system significantly affects the concentration dependence of the excess Gibbs energy of mixing in the liquid phase at this temperature.
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10

Saeed, Usman, Hans Flandorfer, and Herbert Ipser. "Lead-free solders: Enthalpies of mixing of liquid alloys in the Ag–Ni and Ag–Ni–Sn systems." Journal of Materials Research 21, no. 5 (May 1, 2006): 1294–304. http://dx.doi.org/10.1557/jmr.2006.0157.

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Partial and integral enthalpies of mixing of liquid Ag–Ni and Ag–Ni–Sn alloys were determined at different temperatures, i.e., at 1500 °C for binary Ag–Ni alloys and at 1000, 1220, and 1400 °C for ternary Ag–Ni–Sn alloys. Two different Calvet-type micro-calorimeters were used for the measurements employing drop calorimetry techniques. The binary data were evaluated by means of a standard Redlich–Kister polynomial fit whereas ternary data were fitted on the basis of an extended Redlich–Kister–Muggianu model for substitutional solutions. No significant temperature dependence could be detected for the ternary enthalpies of mixing. From the experimental ternary data, it was possible to deduce the liquidus isotherm at 1000 °C as well as the extension of the liquid miscibility gap at 1220 and 1400 °C.
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11

Zhao, W. C., B. Q. Xu, and H. W. Yanga. "Liquid-vapor equilibrium and evaporation rate of Cd-Zn liquid alloy." Journal of Mining and Metallurgy, Section B: Metallurgy, no. 00 (2021): 30. http://dx.doi.org/10.2298/jmmb201229030z.

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In this study, LVE (liquid-vapor equilibrium) data of cadmium-zinc system were determined at pressure of 7.5 Pa. We compare the use of the Redlich-Kister polynomials with the Wilson equation in fitting activities. The LVE for Cd-Zn system in vacuum distillation was modeled using the two models. The results of the two models are reliable, the Redlich-Kister polynomialsis better than the Wilson equation. The LVE phase diagram is reliable for predicting the process of vacuum distillation for Cd-Zn system. Evaporation rates of elements in Cd-Zn alloy were experimental measured and calculated by the Langmuir equation. Experimental data on the evaporation of pure metals Cd and Zn are included. The evaporation coefficients of zinc and cadmium under vacuum conditions were calculated. The deviations were discussed. Comparing calculations with experimental results, it can be found that the trend is consistent. The activation energies of Cd and Zn in the Cd-Zn alloy under experimental conditions were also calculated.
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12

Novák, Josef P., Jaroslav Matouš, and Jiří Pick. "Liquid-liquid equilibrium. Applicability of the Redlich-Kister, NRTL and LEMF equations to heterogeneous systems." Collection of Czechoslovak Chemical Communications 50, no. 3 (1985): 697–703. http://dx.doi.org/10.1135/cccc19850697.

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The limits of applicability of the Redlich-Kister, NRTL and LEMF equations when applied to heterogeneous systems are specified. These limits follow from the requirement of solvability of relations of the equality of activities in coexisting phases on the one hand and of the monotonous dependence of activity coefficients on the other hand.
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13

Grguric, Ivona, Aleksandar Tasic, Bojan Djordjevic, Mirjana Kijevcanin, and Slobodan Serbanovic. "Excess molar volume of the acetonitrile + alcohol systems at 298.15K. Part I: Density measurements for acetonitrile + methanol, + ethanol systems." Journal of the Serbian Chemical Society 67, no. 8-9 (2002): 581–86. http://dx.doi.org/10.2298/jsc0209581g.

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The excess molar volume VE of the binary liquid systems acetonitrile methanol and acetonitrile + ethanol has been evaluated from density measurements at 298.15K and at atmospheric pressure over the entire composition range. A vibrating tube densimeter, type Anton Paar DMA 55, was applied for these measurements. The Redlich?Kister equation was used to fit the experimental VE data.
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14

Cea, Pilar, Carlos Lafuente, Hector Artigas, Felix M. Royo, and Jose S. Urieta. "Excess volumes and excess viscosities of binary mixtures of 2-chloro-2-methylpropane with isomeric butanols at 298.15 K." Canadian Journal of Chemistry 72, no. 9 (September 1, 1994): 1921–25. http://dx.doi.org/10.1139/v94-244.

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Excess volumes VE, excess viscosities ηE, and excess free energies of activation of flow G*E of binary mixtures of 2-chloro-2-methylpropane with isomeric butanols have been calculated from experimental measurements of density and viscosity at 298.15 K. The results are correlated by means of a Redlich–Kister type equation and explained in terms of molecular interactions.
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15

Hasan. "Approximation of Iteration Number for Gauss-Seidel Using Redlich-Kister Polynomial." American Journal of Applied Sciences 7, no. 7 (July 1, 2010): 969–75. http://dx.doi.org/10.3844/ajassp.2010.969.975.

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16

M. Wilson, Grant. "From Redlich-Kister to local composition models, group solutions, and electrolytes." Fluid Phase Equilibria 24, no. 1-2 (January 1985): 77–85. http://dx.doi.org/10.1016/0378-3812(85)87038-2.

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17

Hensen, Karl, and Michael Dräbing. "Thermodynamische Betrachtungen von Schmelzdiagrammen einiger Systeme aus Methylchlorsilanen und Lutidinen." Zeitschrift für Naturforschung A 45, no. 9-10 (October 1, 1990): 1158–64. http://dx.doi.org/10.1515/zna-1990-9-1013.

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Abstract A thermodynamic interpretation of the liquidus curves of some methyltrichloro-respectively dimethyldichlorosilane/lutidine-systems is given. Based on certain approximations it was possible to fit thermodynamic functions to the experimental results to obtain the excess datas of binary systems. A comparison between the models of Redlich-Kister, Wilson and the NRTL-formalism for the free excess enthalpy of binary mixtures is given.
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18

Sovová, Miroslava, and Tomáš Boublík. "Vapour-liquid equilibrium in the water(1)-morpholine(2) system at the pressures of 50 and 75 kPa." Collection of Czechoslovak Chemical Communications 51, no. 9 (1986): 1899–902. http://dx.doi.org/10.1135/cccc19861899.

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Vapour-liquid equilibrium in the water(1)-morpholine(2) system was determined experimentally at the pressures of 50 and 75 kPa. The data were correlated by the Redlich-Kister equation. The dependence od the excess Gibbs free energy on temperature was expressed by a linear dependence of the first parameter of the two-parameter equation on the reciprocal absolute temperature.
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19

Zagula-Yavorska, Maryana, Jolanta Romanowska, Sławomir Kotowski, and Jan Sieniawski. "Numerical Prediction of the Thermodynamic Properties of Ternary Al-Ni-Pd Alloys." High Temperature Materials and Processes 35, no. 1 (January 1, 2016): 37–45. http://dx.doi.org/10.1515/htmp-2014-0112.

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AbstractThermodynamic properties of ternary Al-Ni-Pd system, such as exGAlNPd, µAl(AlNiPd),µNi(AlNiPd) and µPd(AlNiPd) at 1,373 K, were predicted on the basis of thermodynamic properties of binary systems included in the investigated ternary system. The idea of predicting exGAlNiPd values was regarded as calculation of values of the exG function inside a certain area (a Gibbs triangle) unless all boundary conditions, that is values of exG on all legs of the triangle are known (exGAlNi, exGAlPd, exGNiPd). This approach is contrary to finding a function value outside a certain area, if the function value inside this area is known. exG and LAl,Ni,Pd ternary interaction parameters in the Muggianu extension of the Redlich–Kister formalism were calculated numerically using the Excel program and Solver. The accepted values of the third component xx differed from 0.01 to 0.1 mole fraction. Values of LAlNiPd parameters in the Redlich–Kister formula are different for different xx values, but values of thermodynamic functions: exGAlNiPd, µAl(AlNiPd), µNi(AlNiPd) and µPd(AlNiPd) do not differ significantly for different xx values. The choice of xx value does not influence the accuracy of calculations.
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20

Koneti, Anil Kumar, and Srinivasu Chintalapati. "Speeds of Sound and Excess Molar Volume for Binary Mixture of 1,4-Dioxane with 1-Heptanol at Five Temperatures." Advances in Chemistry 2014 (November 5, 2014): 1–7. http://dx.doi.org/10.1155/2014/343012.

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Speed of sound and density data for dilute liquid solutions of cyclic ether 1,4-dioxane with 1-heptanol was obtained using the Anton-Paar DSA 5000 at five temperatures T = (298.15, 303.15, 308.15, 313.15, and 318.15) K at atmospheric pressure. The excess parameters were calculated from experimental data and fitted with a Redlich-Kister polynomial function and concluded the presence of weak molecular interactions.
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21

Kubíček, Vladimír, Josef P. Novák, and Jaroslav Matouš. "Liquid-Liquid Equilibrium in the Water-Methyl tert-Butyl Ether-Nitromethane-Ethylene Glycol System." Collection of Czechoslovak Chemical Communications 58, no. 5 (1993): 983–95. http://dx.doi.org/10.1135/cccc19930983.

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The liquid-liquid equilibrium was measured at 20 °C in the title quaternary system and in the three nitromethane-containing ternary subsystems. The data were compared with those predicted by a superposition of the Wilson and Redlich-Kister equations including the ternary parameters. The agreement between the observed and calculated data is very good both for the quaternary system and for the three ternary systems.
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22

Malijevská, Ivona, and Anatol Malijevský. "On Temperature Dependence of Excess Gibbs Energy." Collection of Czechoslovak Chemical Communications 64, no. 7 (1999): 1093–99. http://dx.doi.org/10.1135/cccc19991093.

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Temperature dependence of GE is discussed for three widely used equations linear and nonlinear in parameters. It is shown that the Wilson equation predicts always positive excess heat capacity regardless of values of its parameters. Several temperature modifications of the Redlich-Kister, Wilson and NRTL equations are discussed with respect to the sign of the excess Gibbs energy, excess enthalpy and excess heat capacity.
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23

Gascón, Ignacio, Santiago Martín, Beatriz Giner, Marta Haro, and Carlos Lafuente. "Experimental values and ERAS model calculations for excess molar volumes and enthalpies of the ternary system 2-butanol + 1,3-dioxolane + cyclohexane." Canadian Journal of Chemistry 81, no. 5 (May 1, 2003): 357–63. http://dx.doi.org/10.1139/v03-068.

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Densities and heats of mixing for the ternary system 2-butanol + 1,3-dioxolane + cyclohexane have been measured at 298.15 and 313.15 K. Excess molar volumes and excess molar enthalpies have been calculated from experimental data and fitted by the Redlich–Kister equation. The ERAS model has been used to calculate excess molar properties of the ternary mixture from parameters obtained from the constituent binary mixtures.Key words: excess properties, ERAS model.
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24

Wisniak, Jaime. "Simple graphical method for calculating the constants of the Redlich-Kister equation." Industrial & Engineering Chemistry Research 32, no. 1 (January 1993): 240. http://dx.doi.org/10.1021/ie00013a033.

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25

Jung, Jae Gyeong, and Young Chan Bae. "Liquid–liquid equilibria of polymer solutions: Applicability of extended Redlich–Kister expansion." European Polymer Journal 46, no. 2 (February 2010): 238–45. http://dx.doi.org/10.1016/j.eurpolymj.2009.10.026.

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26

Ghazoyan, Heghine H. "VOLUMETRIC PROPERTIES OF ACRYLONITRILE+ETHANOL MIXTURE OVER TEMPERATURE RANGE FROM (293.15 TO 323.15) K AT AMBIENT PRESSURE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 2 (February 8, 2020): 32–37. http://dx.doi.org/10.6060/ivkkt.20206302.6068.

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Densities of binary mixture of acrylonitrile in ethanol have been measured over the full range of compositions at temperatures from 293.15K to 323.15 K at the ambient pressure (87.9 kPa). The volumetric properties such as excess molar volumes, apparent molar volumes, partial molar volumes, excess partial molar volumes, standard partial molar volumes for binary mixture were calculated. Excess molar volumes were described by the Redlich–Kister polynomial equation. The Redlich–Kister coefficients and the standard deviations were calculated as well. The excess molar volumes exhibit mainly negative deviations from the ideal behavior over the whole range of composition for acrylonitrile+ethanol binary mixtures at low temperatures and become less negative with increasing temperature from 293.15 to 323.15 K. The results are interpreted on the basis of strong interaction between group of acrylonitrile and OH group of ethanol by hydrogen bonding. However, the sigmoid shape of plots of excess molar volumes versus molar fraction of ethanol from positive to negative values indicates to the varying interactions depending upon the composition of binary mixtures. Moreover, it is also attributed to the self-associating effect of ethanol therefore the self-associates of acrylonitrile by dipole-dipole interactions and the self-associates of ethanol by hydrogen bonding between same molecules at low concentrations predominate too.
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27

Gierlotka, W., K. Fitzner, and M. Sukiennik. "Thermodynamic properties of the liquid Hg-Tl alloys determined from vapour pressure measurements." Journal of Mining and Metallurgy, Section B: Metallurgy 38, no. 3-4 (2002): 237–47. http://dx.doi.org/10.2298/jmmb0204237g.

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The partial vapour pressure of mercury over liquid Hg-Tl liquid solutions were determined in the temperature range from 450 to 700 K by direct vapour pressure measurements carried out with the quartz gauge. From the measured ln pHg vs. T relationships activities of mercury were determined. Using Redlich-Kister formulas logarithms of the activity coefficients were described with the following equations: From which all thermodynamic functions in the solutions can be derived.
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28

Zivkovic, Dragana, Dragan Manasijevic, Ivan Mihajlovic, and Zivan Zivkovic. "Calculation of the thermodynamic properties of liquid Ag-In-Sb alloys." Journal of the Serbian Chemical Society 71, no. 3 (2006): 203–11. http://dx.doi.org/10.2298/jsc0603203z.

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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.
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29

Kumar, Harsh. "Non-ideal behaviour of binary liquid mixtures and different approaches to calculate ideal expansibility." Collection of Czechoslovak Chemical Communications 75, no. 2 (2010): 187–200. http://dx.doi.org/10.1135/cccc2009503.

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Densities for binary mixtures of cyclopentane with 1-propanol, 1-pentanol, and 1-heptanol over the whole composition range have been measured at temperature 318.15 K. From these densities, excess molar volumes were calculated. All the experimental excess molar volumes were fitted to Redlich–Kister equation and were analyzed with the help of Prigogine–Flory–Patterson theory. Also isobaric expansibilities and their excess counterparts were calculated. Further different approaches were analysed for calculating ideal expansibilities.
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30

Anil Kumar, K., and Ch Srinivasu. "Excess Parameter Studies on Tetrahydropyran with 1-Hexanol at T = 298.15 to 318.15 K Using Anton Paar." International Letters of Chemistry, Physics and Astronomy 36 (July 2014): 114–24. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.36.114.

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Sound velocity, densities of binary mixture of Tetrahydropyran (THP) with 1-hexanol has been measured over the entire range of composition at T = 298.15 to 318.15 K. The excess parameters viz., excess sound velocity, deviations in isentropic compressibility, excess molar volume, excess free length and excess acoustic impedance are deduced from experimental values and discussed intermolecular interactions present in the mixture. At the end all the parameters have been fitted to Redlich-Kister equation and their coefficients are obtained.
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31

Corradini, F., G. Franchini, L. Marcheselli, L. Tassi, and G. Tosi. "Densities and Excess Molar Volumes of 2-Methoxyethanol/Water Binary Mixtures." Australian Journal of Chemistry 45, no. 7 (1992): 1109. http://dx.doi.org/10.1071/ch9921109.

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Densities (ρ) are reported for the 2-methoxyethanol (component l)/water (component 2) solvent system, over the full composition range (0 ≤ X1 ≤ 1) at temperatures (t) from -10 to +80�C. The experimental data have been fitted by three empirical relations that represent the functions ρ = ρ(t), ρ = ρ(X1), ρ = p(t,X1), and the excess volume values by a Redlich-Kister equation. The 1:2 2-methoxyethanol/water adduct appears to be stable throughout the temperature range.
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32

Jelic, Jelena, Aleksandar Tasic, Bojan Djordjevic, and Slobodan Serbanovic. "Use of the SSF equations in the Kojima-Moon-Ochi thermodynamic consistency test of isothermal vapour-liquid equilibrium data." Journal of the Serbian Chemical Society 65, no. 12 (2000): 877–89. http://dx.doi.org/10.2298/jsc0012877j.

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The Kojima-Moon-Ochi (KMO) thermodynamic consistency test of vapour-liquid equilibrium (VLE) measurements for 32 isothermal data sets of binary systems of various complexity was applied using two fitting equations: the Redlich-Kister equation and the Sum of Symmetrical Functions. It was shown that the enhanced reliability of the fitting of the experimental data can change the conclusions drawn on their thermodynamic consistency in those cases of VLE data sets that are estimated to be near the border of consistency.
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33

Gayathri, A., T. Venugopal, and K. Venkatramanan. "Redlich-Kister Coefficients on the Analysis of Physico-Chemical Characteristics of Functional Polymers." Materials Today: Proceedings 17 (2019): 2083–87. http://dx.doi.org/10.1016/j.matpr.2019.06.257.

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34

Ohshima, H., A. Tanaka, and T. Sukegawa. "Calculation of the GaAlSb phase diagram using the Redlich-Kister expression." physica status solidi (a) 87, no. 2 (February 16, 1985): K131—K134. http://dx.doi.org/10.1002/pssa.2210870245.

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35

Abe, Taichi, Keiichi Ogawa, and Kiyoshi Hashimoto. "Analysis of miscibility gaps based on the Redlich–Kister polynomial for binary solutions." Calphad 38 (September 2012): 161–67. http://dx.doi.org/10.1016/j.calphad.2012.06.006.

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36

Budeanu, Maria Magdalena, and Vasile Dumitrescu. "Excess Properties for the Binary System Diethylene Glycol Dibutyl Ether � Ethanol." Revista de Chimie 71, no. 5 (May 29, 2020): 17–23. http://dx.doi.org/10.37358/rc.20.5.8108.

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This paper reports propertiesdata at 20, 25 and 30 0C and 1 atmosphere pressure for diethylene glycol dibutyl ether - ethanol system depending on concentration. The experimental values of density and viscosities of pure components and mixtures were correlated with temperature. The excess properties were determined from experimental data of densities and viscosities. These excess values were correlated to Hwang and Redlich-Kister equations. The value of excess molar volume for equimolar solution was compared with the values calculated from the Flory and Prigogine-Flory-Patterson theories.
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37

Novák, Josef P., Jaroslav Matouš, Květuše Říčná, and Vladimír Kubíček. "Liquid-liquid equilibrium in the water-ethanol-toluene system. Correlation of equilibrium data." Collection of Czechoslovak Chemical Communications 54, no. 3 (1989): 586–601. http://dx.doi.org/10.1135/cccc19890586.

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Liquid-liquid equilibrium data in the water-ethanol-toluene system were correlated by the superposition of the Wilson and Redlich-Kister equations with a ternary term. The correlation of both homogeneous binary systems was taken from the literature. The ternary liquid-liquid equilibrium data were at all temperatures satisfactorily described on using only three ternary parameters determined from the equilibrium data at 50 °C. The parameters obtained by the correlation yield also a good estimate of boiling point and composition of homogeneous azeotropic mixture.
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38

Chýlková, Kamila, and Ivona Malijevská. "Pycnometric determination of densities and excess volumes of binary mixtures containing at least one associating component." Collection of Czechoslovak Chemical Communications 55, no. 10 (1990): 2395–403. http://dx.doi.org/10.1135/cccc19902395.

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Densities at 20 °C and molar excess volumes calculated from them are reported in the work for the mixtures of the substances: propionic acid-n-heptane, propionic acid-benzene, trifluoroacetic acid-benzene, propionic acid-cyclohexane, acetic acid-cyclohexane, acetic acid-trifluoroacetic acid, acetic acid-propionic acid, and propionic acid-trifluoroacetic acid. For the last system mentioned, a strange dependence of excess volume on composition was found which is noted for three local extremes. The dependences of excess volume on composition are correlated by the Redlich-Kister polynomial.
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39

Dragoescu, Dana, Alexandru Barhala, Mariana Teodorescu, and Daniela Chiscan. "Isothermal vapour-liquid equilibria in cyclohexanone + dichloroalkane binary mixtures at temperatures from 298.15 to 318.15K." Journal of the Serbian Chemical Society 76, no. 2 (2011): 305–15. http://dx.doi.org/10.2298/jsc090127020d.

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The vapour pressures of binary mixtures of cyclohexanone + dichloroalkane (1,3-dichloropropane and 1,4-dichlorobutane) were measured at temperatures between 298.15 K and 318.15 K. The vapour pressures vs. liquid phase composition data were used to calculate the activity coefficients of the two components and the excess molar Gibbs energies GE for the mixtures, using the Barker method and the Redlich-Kister, Wilson, NRTL and UNIQUAC equations, taking into account the vapour phase imperfection in terms of the 2nd virial coefficient. No significant difference between the GE values obtained with these equations was observed.
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40

Kotova, Natalia, Michael Ivanov, and Natalia Usenko. "Thermochemical properties of liquid alloys along xCu/xSb= 0.2/08 section of the ternary Cu-Sb-Ce system." French-Ukrainian Journal of Chemistry 5, no. 2 (2017): 24–29. http://dx.doi.org/10.17721/fujcv5i2p24-29.

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The enthalpies of mixing of liquid alloys of the ternary Cu–Sb–Ce system were studied by high-temperature calorimetry along the cross-section = 0.2/0.8. The composition dependence of these values were modelled using four "geometric" models and also the analytical method of Redlich–Kister–Muggianu. A comparison of the experimental data for the cross section = 0.2/0.8 and simulated values of the enthalpies of mixing showed that the most suitable for describing the properties of liquid alloys of ternary Cu–Sb–Ce system is the Toop model.
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41

Cao, Zhan Min, Kun Peng Wang, Guang Wei Du, and Zhi Yu Qiao. "Thermodynamic Evaluation and Assessment of the Ti-U Binary System." Applied Mechanics and Materials 187 (June 2012): 272–77. http://dx.doi.org/10.4028/www.scientific.net/amm.187.272.

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The thermodynamic description of the Ti-U binary system is obtained by the CALPHAD method using Thermo-Calc software and based on the estimated thermodynamic properties using ion-bonding model and Miedema model as well as the experimental phase diagram information. The liquid, αU, βU, δTi, and γ phases are assumed to be substitutional solutions with Redlich-Kister formula for the expressions of their excess Gibbs energy. The intermetallic compound TiU2 is treated as a stoichiometric compound. The calculated phase equlibria are in good agreement with the estimated and available experimental phase diagram data.
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42

Ovečková, Jana, Elena Graczová, and Július Surový. "Influence of nonideality of a ternary solvent on its extraction characteristics." Collection of Czechoslovak Chemical Communications 55, no. 6 (1990): 1465–71. http://dx.doi.org/10.1135/cccc19901465.

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Limiting selectivities and capacities for various compositions of the mixed solvent ethylene glycol (EG)-diethylene glycol (DEG)-N-methylpyrrolidone (NMP) with respect to toluene have been calculated from limiting activity coefficients of toluene and heptane. The calculations were made for both the ideal and real behaviour of the mixed solvent. The limiting activity coefficients of the model hydrocarbons toluene and heptane in the mixed solvent were calculated from experimentally determined binary coefficients of the Redlich-Kister equation, Wilson's equation as modified by Novak and co-workers, and the NRTL equation.
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43

Graczová, Elena, Július Surový, and Soňa Bafrncová. "Ternary Corrections in the Liquid-Liquid Equilibria Computation for Three-Component Systems Containing Components of Mixed Solvent N-Methylpyrrolidone-Ethylene Glycol." Collection of Czechoslovak Chemical Communications 57, no. 1 (1992): 7–15. http://dx.doi.org/10.1135/cccc19920007.

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Presented are the liquid-liquid (L-L) equilibrium data for three-component heterogeneous systems toluene-N-methylpyrrolidone-ethylene glycol, heptane-N-methylpyrrolidone-ethylene glycol and heptane-toluene-ethylene glycol at 50 °C. Equations for the excess Gibbs energy (NRTL. Novák modification of Wilson equation and Redlich-Kister 4th order expansion) extended by ternary universal contribution were employed for correlating the L-L equilibrium data. The binary equation parameters were independently evaluated from the binary equilibrium data. The presented ternary data served for evaluation of parameters of the universal ternary contribution.
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44

Kovács, Éva, and Jan Linek. "Densities and Excess Volumes in Binary Mixtures of Heptane with 1-Chloropropane, 1-Chlorobutane, 1-Chloropentane, or 1-Chlorohexane at 298.15 K." Collection of Czechoslovak Chemical Communications 64, no. 3 (1999): 495–501. http://dx.doi.org/10.1135/cccc19990495.

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Densities and excess molar volumes, VE, of heptane-1-chloropropane, heptane- 1-chlorobutane, heptane-1-chloropentane, and heptane-1-chlorohexane systems are reported at 298.15 K and atmospheric pressure over the whole composition range. Value of VE was found to be slightly negative at lower mole fractions and slightly positive at higher mole fractions in case of the heptane-1-chlorohexane system. For all the other systems, VE was positive. The VE results were correlated using the fourth-order Redlich-Kister equation, the maximum likelihood procedure being applied for evaluating the adjustable parameters.
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45

Dumitrescu, Vasile, and Octav Pântea. "Viscosities of binary mixtures of toluene with butan-1-ol and 2-methylpropan-2-ol." Journal of the Serbian Chemical Society 70, no. 11 (2005): 1313–23. http://dx.doi.org/10.2298/jsc0511313d.

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The viscosities of binary liquid mixtures of toluene with butan-1-ol and 2-methylpropan-2-ol have been determined at 298.15, 303.15, 308.15, 313.15 and 318.15 K over the whole concentration range. The Hind, Grunberg-Nissan, Wijk, Auslander and McAllister models were used to calculate the viscosity coefficients and these were compared with the experimental data for the mixtures. Excess viscosities were also calculated and fitted to the Redlich-Kister equation. Various thermodynamic properties of viscous flow activation were determined and their variations with composition are discussed.
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46

Zivkovic, Emila, Mirjana Kijevcanin, Ivona Radovic, and Slobodan Serbanovic. "Viscosities and refractive indices of binary systems acetone+1-propanol, acetone+1,2-propanediol and acetone+1,3-propanediol." Chemical Industry and Chemical Engineering Quarterly 20, no. 3 (2014): 441–55. http://dx.doi.org/10.2298/ciceq130305026z.

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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.
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47

Řehák, Karel, Jaroslav Matouš, Josef P. Novák, and Andreas Heintz. "Phase Equilibria in 4-Methylpentan-2-one-Water and 4-Methylpentan-2-one-4-Methylpentan-2-ol Systems and Their Thermodynamic Description." Collection of Czechoslovak Chemical Communications 65, no. 9 (2000): 1471–86. http://dx.doi.org/10.1135/cccc20001471.

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Liquid-liquid equilibrium and excess enthalpies at 25, 40 and 60 °C were measured for the 4-methylpentan-2-one-water system. Vapour-liquid equilibrium at 115 °C and 99.96 kPa, and excess enthalpies at 25, 40 and 60 °C were determined for the 4-methylpentan-2-one- 4-methylpentan-2-ol system. The data obtained were correlated together with those given in literature using the superposition of the Wilson and Redlich-Kister equation. The correlation procedure utilised also the data on excess enthalpy measured in a heterogeneous region.
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48

Kumar, Maninder, and V. K. Rattan. "Thermo Physical Properties for Binary Mixture of Dimethylsulfoxide and Isopropylbenzene at Various Temperatures." Journal of Thermodynamics 2013 (April 29, 2013): 1–7. http://dx.doi.org/10.1155/2013/353841.

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Density, refractive index, speed of sound, and viscosity have been measured of binary mixture dimethylsulfoxide (DMSO) + isopropylbenzene (CUMENE) over the whole composition range at 298.15, 303.15, 308.15, and 313.15 K and atmospheric pressure. From these experimental measurements the excess molar volume, deviations in viscosity, molar refractivity, speed of sound, and isentropic compressibility have been calculated. These deviations have been correlated by a polynomial Redlich-Kister equation to derive the coefficients and standard error. The viscosities have furthermore been correlated with two or three parameter models, that is, herric correlation and McAllister model, respectively.
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49

Graczová, Elena, and Július Surový. "Ternary Corrections in the Liquid-Liquid Equilibria for Four-Component System Heptane-Toluene-N-Methylpyrrolidone-Ethylene Glycol." Collection of Czechoslovak Chemical Communications 57, no. 1 (1992): 16–25. http://dx.doi.org/10.1135/cccc19920016.

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Prediction for four-component liquid-liquid equilibrium is based on binary a ternary equilibrium data. Three-parameter equations for the excess Gibbs energy (NRTL equation, Redlich-Kister 4th order expansion and Wilson equation in Novák modification) extended by universal ternary contribution were employed for a thermodynamic description of the four-component system. The computation method was applied for a model four-component system heptane-toluene-N-methylpyrrolidone-ethylene glycol, t = 50 °C. The computed equilibrium data were compared with experimental ones measured for the weight ratio of the mixture N-methylpyrrolidone per ethylene glycol 20/80, 40/60 and 60/40.
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50

Domínguez, M., A. Camacho, M. C. López, F. M. Royo, and J. S. Urieta. "Excess molar volumes and excess viscosities of ternary mixtures (2-butanol + 1-chlorobutane + 1-butylamine) and (2-methyl-2-propanol + 1-chlorobutane + 1-butylamine) at 298. 15 K." Canadian Journal of Chemistry 73, no. 6 (June 1, 1995): 896–901. http://dx.doi.org/10.1139/v95-112.

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Excess molar volumes and excess viscosities, at 298.15 K, of the ternary mixtures (2-butanol + 1-chlorobutane + 1-butylamine) and (2-methyl-2-propanol + 1-chlorobutane + 1-butylamine) and of the binary mixtures (2-butanol + 1-butylamine), (2-methyl-2-propanol + 1-butylamine), and (1-chlorobutane + 1-butylamine) have been measured. The ternary excess properties were fitted to the polynomial equation of Cibulka. The experimental results were also compared with those predicted by the empirical equations of Redlich–Kister, Tsao–Smith, Kohler, and Colinet. Keywords: binary and ternary mixtures, excess properties, 2-butanol, 2-methyl-2-propanol, 1-chlorobutane, 1-butylamine.
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