A Comparative Study of Adsorption and Diffusion of Vapor Alcohols and Alcohols From Aqueous Solutions in Silicalite

Jerry Lin, Y. H. Ma

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The adsorption isotherms and intracrystalline diffusivities of vapor alcohols and alcohols from aqueous solutions in silicalite were experimentally determined. The adsorption isotherms for the alcohols in liquid phase are well predicted from the vapor phase isotherm data using the analogy theory. The intracrystalline diffusivities in liquid phase exhibit the same trend as those in the vapor phase at near saturation loading. The estimated difference of heats of immersion between alcohols and water in silicalite varies from 6.3 to 7.3 KJ/mol. The activation energy for liquid intracrystalline diffusion in silicalite ranges from 5.7 to 21 KJ/mol and increases with decreasing intracrystalline diffusivity.

Original languageEnglish (US)
Pages (from-to)877-886
Number of pages10
JournalStudies in Surface Science and Catalysis
Volume49
Issue numberC
DOIs
StatePublished - 1989
Externally publishedYes

Fingerprint

alcohols
Alcohols
Vapors
vapors
aqueous solutions
diffusivity
Adsorption
isotherms
adsorption
Adsorption isotherms
liquid phases
Diffusion in liquids
vapor phases
Liquids
submerging
Isotherms
Activation energy
activation energy
saturation
trends

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Catalysis
  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

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abstract = "The adsorption isotherms and intracrystalline diffusivities of vapor alcohols and alcohols from aqueous solutions in silicalite were experimentally determined. The adsorption isotherms for the alcohols in liquid phase are well predicted from the vapor phase isotherm data using the analogy theory. The intracrystalline diffusivities in liquid phase exhibit the same trend as those in the vapor phase at near saturation loading. The estimated difference of heats of immersion between alcohols and water in silicalite varies from 6.3 to 7.3 KJ/mol. The activation energy for liquid intracrystalline diffusion in silicalite ranges from 5.7 to 21 KJ/mol and increases with decreasing intracrystalline diffusivity.",
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AB - The adsorption isotherms and intracrystalline diffusivities of vapor alcohols and alcohols from aqueous solutions in silicalite were experimentally determined. The adsorption isotherms for the alcohols in liquid phase are well predicted from the vapor phase isotherm data using the analogy theory. The intracrystalline diffusivities in liquid phase exhibit the same trend as those in the vapor phase at near saturation loading. The estimated difference of heats of immersion between alcohols and water in silicalite varies from 6.3 to 7.3 KJ/mol. The activation energy for liquid intracrystalline diffusion in silicalite ranges from 5.7 to 21 KJ/mol and increases with decreasing intracrystalline diffusivity.

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