Simple Universal Kelvin Equation Valid in Critical Point Vicinity and its Application to Carbon Dioxide Capillary Condensation in Mesoporous Silica

Abstract:

A new simple universal form of the Kelvin equation that can be used even near the gas-liquid phase transition critical point is shown. The correction of the chemical potential, pressure, and density outside the porous medium is presented and taken into account for the CO₂ meniscus curvature radius calculation at capillary condensation in mesoporous silica MCM-41, known [1] for its wide range of applications.

• Periodical: Solid State Phenomena (Volume 265)
• Pages: 392-397
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.265.392
• Online since: September 2017
• Authors: Anton A. Valeev*, Elena V. Morozova
• Keywords: Capillary Condensation, Critical Point, Kelvin Equation, Nanostructured Materials, Phase Transition

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