The Effect of Wettability on Confinement-Induced Phase Behavior and Storage of Alkane in Nanoporous Media
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View abstract on PubMed
Summary
This summary is machine-generated.This study examined how surface wettability affects n-butane adsorption in nanoporous materials. While wettability influenced initial adsorption, its impact on phase transitions and hysteresis was minimal, offering insights for gas storage applications.
Area Of Science
- Materials Science
- Physical Chemistry
- Nanotechnology
Background
- Understanding fluid behavior in nanoporous materials is crucial for applications like gas storage and carbon capture.
- The role of surface wettability in confined fluid phase transitions requires further investigation.
Purpose Of The Study
- To investigate the effect of hydrophilic and hydrophobic nanoporous materials on the adsorption and desorption isotherms of n-butane.
- To analyze the influence of surface chemistry on confined phase transitions and hysteresis.
Main Methods
- Synthesized hydrophilic (MCM-41 silica) and hydrophobic (HMDS-treated MCM-41) nanoporous materials.
- Measured n-butane adsorption/desorption isotherms using a gravimetric apparatus at various temperatures.
- Applied Kelvin's equation to evaluate capillary evaporation pressures.
Main Results
- N-butane adsorption was higher on hydrophilic MCM-41 compared to hydrophobic counterparts.
- Wettability showed a minor effect on capillary condensation/evaporation pressures and was not significant for phase transitions.
- Hysteresis in phase transitions was independent of surface wettability.
Conclusions
- Surface wettability has a limited impact on n-butane phase transitions within nanopores.
- Experimental data on confined fluids are essential for developing accurate theoretical and modeling tools for industrial applications.
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