Permeation and separation of a carbon dioxide/nitrogen mixture in a methyltriethoxysilane templating silica/α-alumina composite membrane

Jong Ho Moon, Yong Jin Park, Min Bae Kim, Sang Hoon Hyun, Chang-Ha Lee

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The experimental and theoretical study of gas permeation and separation characteristics of an MTES (methyltriethoxysilane) templating nano-porous silica/α-alumina composite membrane was conducted using a carbon dioxide/nitrogen binary system. The adsorption equilibriums of carbon dioxide and nitrogen on the MTES templating silica layer were measured using a gravimetric method. The surface diffusion was a dominant transport mechanism on the MTES templating silica layer rather than micro-pore diffusion. On the other hand, the surface diffusion effect of nitrogen was much smaller than that of carbon dioxide. In the separation of the carbon dioxide/nitrogen mixture on the composite membrane, the strong adsorbate on the MTES templating silica layer permeated through the membrane more rapidly than the weak adsorbate due to the surface diffusion and/or the pore-blocking phenomenon. The permeation and separation of multi-component permeation were well predicted by the combined GMS (generalized Maxwell-Stefan) and DGM (dusty gas model) model. The separation characteristics of the composite membrane were tested under various experiment conditions such as feed pressure, temperature, stage cut and sweeping gas flow rate.

Original languageEnglish
Pages (from-to)195-205
Number of pages11
JournalJournal of Membrane Science
Volume250
Issue number1-2
DOIs
Publication statusPublished - 2005 Mar 15

Fingerprint

Aluminum Oxide
Composite membranes
Carbon Dioxide
Permeation
Silicon Dioxide
Surface diffusion
carbon dioxide
Carbon dioxide
Nitrogen
Alumina
aluminum oxides
surface diffusion
Silica
silicon dioxide
membranes
nitrogen
composite materials
Membranes
Gases
Adsorbates

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

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title = "Permeation and separation of a carbon dioxide/nitrogen mixture in a methyltriethoxysilane templating silica/α-alumina composite membrane",
abstract = "The experimental and theoretical study of gas permeation and separation characteristics of an MTES (methyltriethoxysilane) templating nano-porous silica/α-alumina composite membrane was conducted using a carbon dioxide/nitrogen binary system. The adsorption equilibriums of carbon dioxide and nitrogen on the MTES templating silica layer were measured using a gravimetric method. The surface diffusion was a dominant transport mechanism on the MTES templating silica layer rather than micro-pore diffusion. On the other hand, the surface diffusion effect of nitrogen was much smaller than that of carbon dioxide. In the separation of the carbon dioxide/nitrogen mixture on the composite membrane, the strong adsorbate on the MTES templating silica layer permeated through the membrane more rapidly than the weak adsorbate due to the surface diffusion and/or the pore-blocking phenomenon. The permeation and separation of multi-component permeation were well predicted by the combined GMS (generalized Maxwell-Stefan) and DGM (dusty gas model) model. The separation characteristics of the composite membrane were tested under various experiment conditions such as feed pressure, temperature, stage cut and sweeping gas flow rate.",
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Permeation and separation of a carbon dioxide/nitrogen mixture in a methyltriethoxysilane templating silica/α-alumina composite membrane. / Moon, Jong Ho; Park, Yong Jin; Kim, Min Bae; Hyun, Sang Hoon; Lee, Chang-Ha.

In: Journal of Membrane Science, Vol. 250, No. 1-2, 15.03.2005, p. 195-205.

Research output: Contribution to journalArticle

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