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Binary system

About: Binary system is a research topic. Over the lifetime, 5788 publications have been published within this topic receiving 97882 citations.


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TL;DR: In this paper, the formation of the breakthrough curves of single and binary vapor systems on the activated carbon bed were studied by using acetone, methylethyketone (MEK), benzene, and toluene.
Abstract: Adsorption dynamics of single and binary vapor systems on the activated carbon bed were studied by using acetone, methylethyketone (MEK), benzene, and toluene. Relationships between the equilibrium adsorption capacity and the characteristics of vapors such as molecular weight, density, boiling point, vapor pressure, molecular diameter, and polarity index were also investigated. From breakthrough experiments, toluene had the strongest affinity with activated carbon in the single and binary vapor systems. The shape of the breakthrough curves of vapor with higher affinity in the binary system was similar to that of the single vapor. On the other hand, the vapor with lower affinity showed a roll-up phenomenon, but the level of roll-up became lower and wider with the increase in fraction in the binary system.

45 citations

Journal ArticleDOI
TL;DR: In this article, the Veytsman statistics for hydrogen bonding (HB) contribution is combined with the nonrandom lattice fluid (NLF) model developed recently by the present authors.

45 citations

Journal ArticleDOI
TL;DR: In this article, a vibrating tube densimeter was used to measure the excess molar volumes of binary liquid mixtures of ionic liquids in order to evaluate the intermolecular interactions and packing effects.
Abstract: Binary excess molar volumes, VmE, have been evaluated from density measurements, using a vibrating tube densimeter over the entire composition range for binary liquid mixtures of ionic liquids 1-ethyl-3-methyl-imidazolium diethyleneglycol monomethylethersulphate [EMIM]+[CH3(OCH2CH2)2OSO3]− or 1-butyl-3-methyl-imidazolium diethyleneglycol monomethylethersulphate [BMIM]+[CH3(OCH2CH2)2OSO3]− or 1-methyl-3-octyl-imidazolium diethyleneglycol monomethylethersulphate [MOIM]+[CH3(OCH2CH2)2OSO3]−+methanol and [EMIM]+[CH3(OCH2CH2)2OSO3]−+water at 29815, 30315 and 31315 K The VmE values were found to be negative for all systems studied The VmE results are explained in terms of intermolecular interactions and packing effects The experimental data were fitted by the Redlich-Kister polynomial

45 citations

Journal ArticleDOI
TL;DR: In this article, the global phase behavior in the binary mixture carbon dioxide + 1-propanol in a wide range of temperatures (293.15 to 426.68) was investigated.
Abstract: Isothermal (P, T, x, y) data have been measured for the binary system carbon dioxide + 1-propanol at temperatures from (293.15 to 353.15) K. The pressure range under investigation was between (0.61 and 12.64) MPa. The new experimental results are discussed and compared with available literature data. Measured vapor−liquid equilibria (VLE) data and literature data for the carbon dioxide + 1-propanol system were modeled with a general cubic equation of state (GEOS) using classical van der Waals (two-parameters conventional mixing rule, 2PCMR) mixing rules. A single set of interaction parameters, representing well the critical pressure maximum (CPM) and the temperature of the upper critical end point (UCEP), was used to calculate the global phase behavior in the binary mixture carbon dioxide + 1-propanol in a wide range of temperatures [(293.15 to 426.68) K]. The VLE data are satisfactorily predicted for engineering purposes.

45 citations

Journal ArticleDOI
TL;DR: In this article, the first principles of both the constituent elements and the compounds in the Al-Ca binary system are used in the CALPHAD (CALculation of PHase Diagrams) approach of thermodynamic modeling.
Abstract: First-principles (FP) energetics of both the constituent elements and the compounds in the Al-Ca binary system are used in the CALPHAD (CALculation of PHase Diagrams) approach of thermodynamic modeling. First-principles calculations are performed using both an all-electron full-potential linearized augmented plane-wave method, as well as an ultrasoft pseudopotential/plane wave method. We perform calculations of T=0 ground state total energies of the pure Al and Ca in fcc, bcc, and hcp structures, and the binary compounds in their observed crystal structures. Al4Ca, Al14Ca13, and Al3Ca8 are modeled in CALPHAD as simple stoichiometric compounds; however, the Laves C15 compound, Al2Ca, is modeled using two sublattices (Al,Ca)2(Al,Ca)1, necessitating first-principles energies of both the stable Al2Ca compound as well as the three nonstable Al2Al, AlCa2, and Ca2Ca compounds. From these total energies, we obtain the formation enthalpies of all the binary compounds that are then used to assist in evaluating the Gibbs energy functions for the individual phases. The entropy contribution in the Gibbs energy function for each individual compound is obtained via the observed equilibria with the liquid phase. We provide a complete thermodynamic description of the Al-Ca binary system, evaluated by this combined CALPHAD-FP approach.

45 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202339
202272
2021103
2020135
2019130
2018140