A novel precursor for the sol-gel and CVD methods to prepare alumina permselective membranes

Ju H. Kim, Guang J. Choi, Joong K. Lee, Sang Jun Sim, Young D. Kim, Young S. Cho

Research output: Contribution to journalArticle

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Abstract

A novel metalorganic compound, AI(OPri)2(etac), was synthesized and used for the preparation of alumina permselective membranes. Membranes were produced by forming permselective thin layers on porous alumina support tubes, either by dip-coating of alumina sol, by the chemical vapour deposition (CVD) technique, or by a combination of the two. In CVD processing, a commercial precursor, AI(OPri)3 was also studied and compared with our novel precursor. Characterization of alumina-producing materials was performed by scanning electron microscopy. X-ray diffraction, transmission electron microscopy, Fourier transform-infrared spectroscopy, thermogravimetric analysis/differential thermal analysis and 1H-nuclear magnetic resonance. The gas separation performance of alumina permselective membranes was measured by permeation experiment using hydrogen and nitrogen gases. For each membrane, gas permeation rates and H2/N2 selectivity were determined. There was a significant difference in the mechanism of CVD deposition between the two compounds. The maximum H2/N2 selectivity among our results was attained by combining sol dip-coating techniques with CVD of our novel precursor, AI(OPri)2(etac).

Original languageEnglish
Pages (from-to)1253-1262
Number of pages10
JournalJournal of Materials Science
Volume33
Issue number5
Publication statusPublished - 1998 Dec 1

Fingerprint

Permselective membranes
Aluminum Oxide
Sol-gels
Chemical vapor deposition
Alumina
Gases
Polymethyl Methacrylate
Sols
Permeation
Membranes
Coating techniques
Organometallics
Differential thermal analysis
Fourier transform infrared spectroscopy
Thermogravimetric analysis
Hydrogen
Nitrogen
Nuclear magnetic resonance
Transmission electron microscopy
X ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Kim, J. H., Choi, G. J., Lee, J. K., Sim, S. J., Kim, Y. D., & Cho, Y. S. (1998). A novel precursor for the sol-gel and CVD methods to prepare alumina permselective membranes. Journal of Materials Science, 33(5), 1253-1262.

A novel precursor for the sol-gel and CVD methods to prepare alumina permselective membranes. / Kim, Ju H.; Choi, Guang J.; Lee, Joong K.; Sim, Sang Jun; Kim, Young D.; Cho, Young S.

In: Journal of Materials Science, Vol. 33, No. 5, 01.12.1998, p. 1253-1262.

Research output: Contribution to journalArticle

Kim, JH, Choi, GJ, Lee, JK, Sim, SJ, Kim, YD & Cho, YS 1998, 'A novel precursor for the sol-gel and CVD methods to prepare alumina permselective membranes', Journal of Materials Science, vol. 33, no. 5, pp. 1253-1262.
Kim, Ju H. ; Choi, Guang J. ; Lee, Joong K. ; Sim, Sang Jun ; Kim, Young D. ; Cho, Young S. / A novel precursor for the sol-gel and CVD methods to prepare alumina permselective membranes. In: Journal of Materials Science. 1998 ; Vol. 33, No. 5. pp. 1253-1262.
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