Thermodynamic Study of Nucleation Effects on Vapor-Liquid Transitions Occurring in Porous Substrates.
- Resource Type
- Article
- Authors
- Ponce, Mariana; Domínguez, Armando; Esparza, J.; Kornhauser, Isaac; Rojas, Fernando
- Source
- Topics in Catalysis. Mar2011, Vol. 54 Issue 1-4, p114-120. 7p. 6 Diagrams.
- Subject
- *THERMODYNAMICS
*NUCLEATION
*VAPOR-liquid equilibrium
*POROUS materials
*SUBSTRATES (Materials science)
*DESORPTION
*PHASE transitions
- Language
- ISSN
- 1022-5528
The Kelvin equation can approximately describe the conditions required for the occurrence of capillary condensation-evaporation phenomena. Nonetheless, nucleation phenomena imply noteworthy deviations from the Kelvin prediction. Nucleation occurs in porous media during liquid-vapor transitions and this phenomenon certainly influences the appearances of adsorption-desorption isotherms. Nucleation plays indeed a capital role during capillary condensation whilst is mostly absent during capillary evaporation. [ABSTRACT FROM AUTHOR]