Capillary constant and surface tension of methane–nitrogen solutions: 1. Experiment

Байдаков, В. Г.; Khotienkova, Maria N.; Андбаева, В. Н.; Kaverin, A. M.

doi:10.1016/j.fluid.2010.11.013

Cited by 27 publications

(21 citation statements)

References 5 publications

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“…Solubility of nitrogen increases as the mole fraction of methane in the mixture increases while the surface tension decreases upon increasing mole fraction of methane. Our values of surface tension are agree well with the experimental values [33][34][35][36].…”

Section: Surface Tensionsupporting

confidence: 90%

Solubility of Nitrogen in Methane, Ethane, and Mixtures of Methane and Ethane at Titan-Like Conditions: A Molecular Dynamics Study

Kumar

Chevrier

2020

ACS Earth Space Chem.

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We have studied the temperature dependence of the solubility of nitrogen in methane, ethane, and mixtures of methane and ethane using vapor-liquid equilibrium simulations of binary and ternary mixtures of nitrogen, methane and ethane for a range of temperatures between 90K and 110K at a pressure of 1.5 atm, thermodynamic conditions that may exist on the Saturn's giant moon, Titan. We find that -(i) the solubility of nitrogen in both methane and ethane decreases with increasing temperature; (ii) the solubility of nitrogen in methane is much larger compared to that in ethane at low temperatures, (iii) solubility of nitrogen in a ternary mixture of methane, ethane, and nitrogen increases upon increasing mole-fraction of methane. Our results are in quantitative agreement with the recent experimental measurement of the solubility of nitrogen in methane, ethane, and a mixture of methane and ethane. Furthermore, we find a strong temperature-dependent surface adsorption of nitrogen at the nitrogen-hydrocarbon interface, previously unknown. We have also investigated surface tension of the gas-liquid interface and find that it decreases upon decreasing temperature. Moreover, we find that the interfacial layer of adsorbed nitrogen and ethane show a preferential orientational ordering at the interface.

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Section: Surface Tensionsupporting

confidence: 90%

Solubility of Nitrogen in Methane, Ethane, and Mixtures of Methane and Ethane at Titan-Like Conditions: A Molecular Dynamics Study

Kumar

Chevrier

2020

ACS Earth Space Chem.

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“…4. Owing to a great difference in the values of 1 and 2 for an ethane-nitrogen system one can observe much greater deviations from the additivity law than, for instance, for a methane-nitrogen system [2]. The experimental isotherm of surface tension of an ethane-nitrogen solution passes considerably lower than the theoretical curve of an ideal solution (see Fig.…”

Section: Concentration Dependence Of Surface Tensionmentioning

confidence: 90%

“…In this analysis, we studied cases where one of the components is ethane or nitrogen. In particular, we studied the systems: (O 2 -N 2 ) [1], (CH 4 -N 2 ) [2], (C 2 H 6 -He) [3], (N 2 -He) [4].…”

Section: Introductionmentioning

confidence: 99%

Surface tension of an ethane–nitrogen solution. 1: Experiment and thermodynamic analysis of the results

Байдаков

Kaverin

Khotienkova

et al. 2012

Fluid Phase Equilibria

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“…The bulk STs of four binary mixtures of the CO 2 – n C 4 , N 2 –C 1 , N 2 –O 2 , C 1 –C 2 , and one ternary mixture of the N 2 –O 2 –Ar are calculated from the new correlation at different temperatures and feed ratios, which are compared with the experimental results in Figure and Tables S2–S5 in the Supporting Information. In Figure , the measured and calculated bulk STs of the CO 2 – n C 4 mixture at three temperatures of T = 319.3, 344.3, and 377.6 K and different feed CO 2 mole fractions are shown.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, O 2 , Ar, CO 2 , N 2 , and alkanes of C 1 –C 10 are used, whose critical temperature, pressure, and volume, Lennard‐Jones potential parameters, and modified van der Waals equation of state (EOS) constants are summarized in Table . The STs of the 15 pure components of the O 2 , Ar, CO 2 , N 2 , C 1 –C 10 , four binary mixtures of the CO 2 – n C 4 , N 2 –C 1 , N 2 –O 2 , C 1 –C 2 , and one ternary mixture of the N 2 –O 2 –Ar at different temperatures in bulk phase were experimentally measured in the previous studies and referred in this study. Moreover, the measured STs of the pure components of the C 1 , C 2 , C 3 , nC 4 , and C 8 at different temperatures and r p = 1.5 nm are also summarized .…”

Section: Methodsmentioning

confidence: 99%

Semi‐analytical nanoscale‐extended surface tension correlation

2019

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Surface tensions (STs) are of critical importance to numerous natural phenomena and practical applications while most existing ST correlations are in the empirical formulations and limited to the bulk phase. In this study, a new semi-analytical correlation based on the perturbation theory from the statistical thermodynamics is initially developed to calculate the STs of the various components in bulk and nanoconfined pores. The newly developed ST correlation is validated to be accurate and generalized in bulk and nanoconfined pores in comparison with the experimentally measured results at a wide range of temperatures. Furthermore, three important patterns with respect to the STs are determined: first, the STs are found to be reduced with the temperature increase but increase when the components become heavier in both bulk and nanoconfined pores; second, the STs of the mixtures tend to be more sensitive to the feed ratios at higher temperatures; last but not least, the nanoscale STs of the pure components are slightly lower than the bulk results at the same conditions.

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Capillary constant and surface tension of methane–nitrogen solutions: 1. Experiment

Cited by 27 publications

References 5 publications

Solubility of Nitrogen in Methane, Ethane, and Mixtures of Methane and Ethane at Titan-Like Conditions: A Molecular Dynamics Study

Solubility of Nitrogen in Methane, Ethane, and Mixtures of Methane and Ethane at Titan-Like Conditions: A Molecular Dynamics Study

Surface tension of an ethane–nitrogen solution. 1: Experiment and thermodynamic analysis of the results

Semi‐analytical nanoscale‐extended surface tension correlation

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