On a simple nonisothermal adsorption experiment with organic vapors and an inertial microbalance to study the surface properties of hybrid (organic/inorganic) porous materials

Gustavo Larsen, Hugo S. Silva, Rosa Venturini De Silva

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A nonisothermal adsorption experiment using a controlled flow of cyclopentane in the 333-313 K range is used to simultaneously estimate the specific surface area and micropore volume of a hybrid (organic/inorganic) alcogel. For reference, the method is also applied to an all-inorganic material with a more rigid structure, namely, a high surface area SiO2- Al2O3. The proposed data analysis provides guidelines to determine whether adsorption data on a certain adsorbate/adsorbent system can be modeled effectively as a convolution of BET (meso- and macropore) and Dubinin- Radushkevitch (DR, micropore) contributions.

Original languageEnglish (US)
Pages (from-to)205-208
Number of pages4
JournalJournal of Colloid and Interface Science
Volume224
Issue number1
DOIs
StatePublished - Apr 1 2000

Fingerprint

Surface properties
Porous materials
Vapors
Rigid structures
Cyclopentanes
Adsorption
Adsorbates
Convolution
Specific surface area
Adsorbents
Experiments

Keywords

  • BET
  • Cyclopentane adsorption
  • Dubinin- Radushkevitch
  • Inertial microbalance
  • Nonisothermal

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

Cite this

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AU - Silva, Hugo S.

AU - De Silva, Rosa Venturini

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N2 - A nonisothermal adsorption experiment using a controlled flow of cyclopentane in the 333-313 K range is used to simultaneously estimate the specific surface area and micropore volume of a hybrid (organic/inorganic) alcogel. For reference, the method is also applied to an all-inorganic material with a more rigid structure, namely, a high surface area SiO2- Al2O3. The proposed data analysis provides guidelines to determine whether adsorption data on a certain adsorbate/adsorbent system can be modeled effectively as a convolution of BET (meso- and macropore) and Dubinin- Radushkevitch (DR, micropore) contributions.

AB - A nonisothermal adsorption experiment using a controlled flow of cyclopentane in the 333-313 K range is used to simultaneously estimate the specific surface area and micropore volume of a hybrid (organic/inorganic) alcogel. For reference, the method is also applied to an all-inorganic material with a more rigid structure, namely, a high surface area SiO2- Al2O3. The proposed data analysis provides guidelines to determine whether adsorption data on a certain adsorbate/adsorbent system can be modeled effectively as a convolution of BET (meso- and macropore) and Dubinin- Radushkevitch (DR, micropore) contributions.

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