Interfacial tension between (CO 2 + N 2 ) gas and tetrabutylammonium bromide aqueous solution

Akiba, Hotaka; Ohmura, Ryo

doi:10.1016/j.jct.2016.01.014

Cited by 10 publications

(5 citation statements)

References 23 publications

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“…Gas hydrates have been considered for applications such as cold storage, gas storage and transportation, desalination, and carbon dioxide capture. − Carbon dioxide hydrate can be used to store cold storage as the latent heat of carbon dioxide hydrate is about 500 kJ/kg. The latent heat of carbon dioxide hydrate is much higher, compared to ice.…”

Section: Introductionmentioning

confidence: 99%

Hydrate Dissociation Equilibrium Conditions for Carbon Dioxide + Tetrahydrofuran

et al. 2017

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Hydrate equilibrium conditions (vapor + hydrate + liquid water + liquid tetrahydrofuran, THF) formed from carbon dioxide in aqueous solutions of THF is determined using a stepwise heating method under isochoric conditions in this work. THF is reported to form an SII hydrate. Hydrate phase equilibrium conditions are measured under the conditions of the THF mass concentration range of 0.0726−0.2503 and pressure range of 0.10−1.87 MPa. The experimental results present that the equilibrium pressures of the experimental systems of carbon dioxide + THF + H 2 O are obviously lower than that of the carbon dioxide + H 2 O system under test conditions. Furthermore, the experimental results also indicate that the carbon dioxide hydrate formation pressure decreased more apparently with more additives of THF.

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Section: Introductionmentioning

confidence: 99%

Hydrate Dissociation Equilibrium Conditions for Carbon Dioxide + Tetrahydrofuran

et al. 2017

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“…However, the pressure gradient of the surface tension mainly depends on the chemical species of the gas phase. 13 Sarlak et al also reported the similar results for CO2+TBAB(aq) system with or without the presence of surfactant. 16 Molecular dynamics (MD) simulations contribute to understanding the microscopic mechanism of action of tetrabutylammonium aqueous solutions at the gas/water surface and its effect on the surface tension.…”

mentioning

confidence: 53%

“…[9][10][11] The tetrabutylammonium halides are classified as electrolytes and the surface tension of their aqueous phases, especially TBAB solutions, in the presence of gas phases were studied by some researchers. [12][13][14][15] The surface activity of TBAX solutions is markedly dependent on the nature of their counterions, just as with other electrolytes in aqueous solutions. 14 Nashed et al concluded that tetrabutylammonium hydroxide (TBAOH) can reduce the gas/liquid surface tension and enlarge the gas/liquid contact area.…”

Section: Introductionmentioning

confidence: 99%

“…15 The surface tension between gas (CO2 and N2) and TBAB aqueous solution was specifically measured by Akiba and Ohmura. 12,13 They found that the values of the surface tension of the CO2-TBAB(aq) solutions were smaller than the air-TBAB(aq) solutions and CO2water system with similar gas pressure and TBAB concentration. The surface tension decreased with increasing CO2 pressure and mass fraction of TBAB in the aqueous solution indicating that more TBA + ions are adsorbed at the interface.…”

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confidence: 99%

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Molecular dynamics simulations of interfacial structure, dynamics, and interfacial tension of tetrabutylammonium bromide aqueous solution in the presence of methane and carbon dioxide

Naeiji

Woo

Ohmura

et al. 2022

The Journal of Chemical Physics

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The interfacial behavior of tetrabutylammonium bromide (TBAB) aqueous solutions in the absence of gas and presence of methane and carbon dioxide gases are studied by molecular dynamics simulations. The aqueous TBAB phase, at concentrations similar to the solid semiclathrate hydrate (1:38 mole ratio), has a smaller interfacial tension and an increase in the gas molecules adsorbed at the interface compared to the pure water. Both of these factors may contribute to facilitating the uptake of the gases into the solid phase during the process of semiclathrate hydrate formation. At similar gas pressures, CO2 is adsorbed preferentially compared to CH4, giving it a higher surface density due to the stronger intermolecular interactions of CO2 molecules of the solution at the interface. The increase in relative adsorption of CH4 at the solution surface compared to the pure water surface is due to the hydrophobic interactions between the n-alkyl chains of the TBA+ cation and the methane gas.

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“…Since the main component of ionic semiclathrate hydrate is water, there are advantages in terms of safety and environmental protection in industrial application. Thermophysical properties of a variety of ionic semiclathrate hydrates have been reported for industrial application, such as thermal energy storage [3][4][5][6] and carbon dioxide separation [7][8][9][10]. Thermal energy storage is a technology storing surplus power and waste heat as thermal energy.…”

Section: Introductionmentioning

confidence: 99%

Measurements of the Dissociation Heats of Tetrabutylammonium Acetate and Tetrabutylammonium Hydroxide Ionic Semiclathrate Hydrates

et al. 2023

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Ionic semiclathrate hydrates mainly consist of water typically together with tetrabutylammonium and tetrabutylphosphonium salts. Since ionic semiclathrate hydrates have the large dissociation heat under ambient pressure and temperature conditions, various ionic semiclathrate hydrates have been studied as safety and eco-friendly phase change materials. In this study, tetrabutylammonium acetate hydrates and tetrabutylammonium hydroxide hydrates were proposed as thermal energy storage media for air conditioning and cooling lithium-ion batteries. The dissociation heat, which was a signi cant thermophysical property to design thermal energy storage systems, were measured at various mass fractions. The largest dissociation heats of tetrabutylammonium acetate hydrates and tetrabutylammonium hydroxide hydrates were 212.9 ± 0.9 kJ/kg and 200.4 ± 2.2 kJ/kg. As a result of the comparison of the dissociation heats of tetrabutylammonium acetate hydrates and tetrabutylammonium hydroxide hydrates with those of other ionic semiclathrate hydrates, it was found that tetrabutylammonium acetate hydrates and tetrabutylammonium hydroxide hydrates had the promising thermophysical properties as thermal energy storage media for air conditioning and cooling lithium-ion batteries respectively.

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Interfacial tension between (CO 2 + N 2 ) gas and tetrabutylammonium bromide aqueous solution

Cited by 10 publications

References 23 publications

Hydrate Dissociation Equilibrium Conditions for Carbon Dioxide + Tetrahydrofuran

Hydrate Dissociation Equilibrium Conditions for Carbon Dioxide + Tetrahydrofuran

Molecular dynamics simulations of interfacial structure, dynamics, and interfacial tension of tetrabutylammonium bromide aqueous solution in the presence of methane and carbon dioxide

Measurements of the Dissociation Heats of Tetrabutylammonium Acetate and Tetrabutylammonium Hydroxide Ionic Semiclathrate Hydrates

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