Formation and characterization of supported microporous membranes prepared by sol-gel modification techniques

R.S.A. de Lange, Rob de Lange, J.H.A. Hekkink, J.H.A. Hekkink, Klaas Keizer, Anthonie Burggraaf, A.J. Burggraaf

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Abstract

The formation is described of supported microporous membranes (by IUPAC definition rpore < 1 nm), prepared by modification of mesoporous γ-alumina membranes with polymeric sols. The mesoporous γ-alumina membranes, with a top-layer thickness in the order of 7–10 μm, and with pore radii of 2–2.5 nm, have a very high surface finish (mean roughness 40 nm). The amorphous microporous top-layer thickness is in the order of 60–100 nm. Gas transport properties are effectively improved as is shown by activated permeation and molecular sieve-like separation factors in the order of 50–200 for H2/CH4. These microporous top-layers can be prepared from a relatively wide range of sol structures; from inorganic oligomers which are too small to result in significant scattering with SAXS, to polymeric structures with fractal dimensions in the range: 1 <df <2.04, and radii of gyration between 0.8 and 4 nm.
Original languageUndefined
Pages (from-to)57-75
Number of pages19
JournalJournal of membrane science
Volume99
Issue number99
DOIs
Publication statusPublished - 1995

Keywords

  • METIS-106446
  • IR-12004

Cite this

de Lange, R. S. A., de Lange, R., Hekkink, J. H. A., Hekkink, J. H. A., Keizer, K., Burggraaf, A., & Burggraaf, A. J. (1995). Formation and characterization of supported microporous membranes prepared by sol-gel modification techniques. Journal of membrane science, 99(99), 57-75. https://doi.org/10.1016/0376-7388(94)00206-E
de Lange, R.S.A. ; de Lange, Rob ; Hekkink, J.H.A. ; Hekkink, J.H.A. ; Keizer, Klaas ; Burggraaf, Anthonie ; Burggraaf, A.J. / Formation and characterization of supported microporous membranes prepared by sol-gel modification techniques. In: Journal of membrane science. 1995 ; Vol. 99, No. 99. pp. 57-75.
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abstract = "The formation is described of supported microporous membranes (by IUPAC definition rpore < 1 nm), prepared by modification of mesoporous γ-alumina membranes with polymeric sols. The mesoporous γ-alumina membranes, with a top-layer thickness in the order of 7–10 μm, and with pore radii of 2–2.5 nm, have a very high surface finish (mean roughness 40 nm). The amorphous microporous top-layer thickness is in the order of 60–100 nm. Gas transport properties are effectively improved as is shown by activated permeation and molecular sieve-like separation factors in the order of 50–200 for H2/CH4. These microporous top-layers can be prepared from a relatively wide range of sol structures; from inorganic oligomers which are too small to result in significant scattering with SAXS, to polymeric structures with fractal dimensions in the range: 1 <df <2.04, and radii of gyration between 0.8 and 4 nm.",
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year = "1995",
doi = "10.1016/0376-7388(94)00206-E",
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de Lange, RSA, de Lange, R, Hekkink, JHA, Hekkink, JHA, Keizer, K, Burggraaf, A & Burggraaf, AJ 1995, 'Formation and characterization of supported microporous membranes prepared by sol-gel modification techniques', Journal of membrane science, vol. 99, no. 99, pp. 57-75. https://doi.org/10.1016/0376-7388(94)00206-E

Formation and characterization of supported microporous membranes prepared by sol-gel modification techniques. / de Lange, R.S.A.; de Lange, Rob; Hekkink, J.H.A.; Hekkink, J.H.A.; Keizer, Klaas; Burggraaf, Anthonie; Burggraaf, A.J.

In: Journal of membrane science, Vol. 99, No. 99, 1995, p. 57-75.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Formation and characterization of supported microporous membranes prepared by sol-gel modification techniques

AU - de Lange, R.S.A.

AU - de Lange, Rob

AU - Hekkink, J.H.A.

AU - Hekkink, J.H.A.

AU - Keizer, Klaas

AU - Burggraaf, Anthonie

AU - Burggraaf, A.J.

PY - 1995

Y1 - 1995

N2 - The formation is described of supported microporous membranes (by IUPAC definition rpore < 1 nm), prepared by modification of mesoporous γ-alumina membranes with polymeric sols. The mesoporous γ-alumina membranes, with a top-layer thickness in the order of 7–10 μm, and with pore radii of 2–2.5 nm, have a very high surface finish (mean roughness 40 nm). The amorphous microporous top-layer thickness is in the order of 60–100 nm. Gas transport properties are effectively improved as is shown by activated permeation and molecular sieve-like separation factors in the order of 50–200 for H2/CH4. These microporous top-layers can be prepared from a relatively wide range of sol structures; from inorganic oligomers which are too small to result in significant scattering with SAXS, to polymeric structures with fractal dimensions in the range: 1 <df <2.04, and radii of gyration between 0.8 and 4 nm.

AB - The formation is described of supported microporous membranes (by IUPAC definition rpore < 1 nm), prepared by modification of mesoporous γ-alumina membranes with polymeric sols. The mesoporous γ-alumina membranes, with a top-layer thickness in the order of 7–10 μm, and with pore radii of 2–2.5 nm, have a very high surface finish (mean roughness 40 nm). The amorphous microporous top-layer thickness is in the order of 60–100 nm. Gas transport properties are effectively improved as is shown by activated permeation and molecular sieve-like separation factors in the order of 50–200 for H2/CH4. These microporous top-layers can be prepared from a relatively wide range of sol structures; from inorganic oligomers which are too small to result in significant scattering with SAXS, to polymeric structures with fractal dimensions in the range: 1 <df <2.04, and radii of gyration between 0.8 and 4 nm.

KW - METIS-106446

KW - IR-12004

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M3 - Article

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SP - 57

EP - 75

JO - Journal of membrane science

JF - Journal of membrane science

SN - 0376-7388

IS - 99

ER -