Microporous sol-gel modified membranes for hydrogen separation

R.S.A. de Lange; J.H.A. Hekkink; K. Keizer; A.J. Burggraaf

doi:10.4028/www.scientific.net/KEM.61-62.77

Microporous sol-gel modified membranes for hydrogen separation

R.S.A. de Lange^*
, J.H.A. Hekkink
, K. Keizer
, A.J. Burggraaf

^*Corresponding author for this work

Inorganic Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

9 Citations (Scopus)

Abstract

The topolayers of mesoporous ceramic γ-alumina membranes (r_pore = 2.3 nm, 50% porosity) are modified with silica-based, microporous (r_pore < 1 nm) systems using a sol-gel technique. These systems remain microporous up to 600°C with a porosity ≈ 30%. At 700°C the porosity is decreased to 10%, but the material is still microporous. Gas transport through these modified membranes is activated, with an activation energy of ≈ 11 kj/mol for hydrogen. A typical hydrogen permeability is 15*10^-7 mol/m² s.Pa at 100°C. Separation factors for H₂/CH₄ at 150°C of 200 are measured. The separation principle is probably 'molecular sieve'-like. Aging of silica modified membranes occurs in a water-containing atmosphere. In a period less than 1 month the activation energy for hydrogen permeation decreased, but no drastic changes in separation properties are observed. After two months, however, the permeability increased to a level of the nonmodified γ-alumina membranes.

Original language	English
Title of host publication	Inorganic Membranes ICIM2-91
Subtitle of host publication	Proceedings of the 2nd International Conference on Inorganic Membranes - ICIM2-91
Editors	A.J. Burggraaf, J. Charpin, L. Cot
Publisher	Trans Tech Publications Ltd
Pages	77-82
Number of pages	6
ISBN (Print)	0878496254
DOIs	https://doi.org/10.4028/www.scientific.net/KEM.61-62.77
Publication status	Published - 1 Dec 1991
Event	2nd International Conference on Inorganic Membranes, ICIM 1991 - Montpellier, France Duration: 1 Jul 1991 → 4 Jul 1991 Conference number: 2

Publication series

Name	Key Engineering Materials
Publisher	Trans Tech Publications Ltd
Volume	61-62
ISSN (Print)	1013-9826

Conference

Conference	2nd International Conference on Inorganic Membranes, ICIM 1991
Abbreviated title	ICIM
Country/Territory	France
City	Montpellier
Period	1/07/91 → 4/07/91

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10.4028/www.scientific.net/KEM.61-62.77

Cite this

de Lange, R. S. A., Hekkink, J. H. A., Keizer, K., & Burggraaf, A. J. (1991). Microporous sol-gel modified membranes for hydrogen separation. In A. J. Burggraaf, J. Charpin, & L. Cot (Eds.), Inorganic Membranes ICIM2-91: Proceedings of the 2nd International Conference on Inorganic Membranes - ICIM2-91 (pp. 77-82). (Key Engineering Materials; Vol. 61-62). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.61-62.77

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title = "Microporous sol-gel modified membranes for hydrogen separation",

abstract = "The topolayers of mesoporous ceramic γ-alumina membranes (rpore = 2.3 nm, 50\% porosity) are modified with silica-based, microporous (rpore < 1 nm) systems using a sol-gel technique. These systems remain microporous up to 600°C with a porosity ≈ 30\%. At 700°C the porosity is decreased to 10\%, but the material is still microporous. Gas transport through these modified membranes is activated, with an activation energy of ≈ 11 kj/mol for hydrogen. A typical hydrogen permeability is 15*10-7 mol/m2 s.Pa at 100°C. Separation factors for H2/CH4 at 150°C of 200 are measured. The separation principle is probably 'molecular sieve'-like. Aging of silica modified membranes occurs in a water-containing atmosphere. In a period less than 1 month the activation energy for hydrogen permeation decreased, but no drastic changes in separation properties are observed. After two months, however, the permeability increased to a level of the nonmodified γ-alumina membranes.",

author = "\{de Lange\}, R.S.A. and J.H.A. Hekkink and K. Keizer and A.J. Burggraaf",

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de Lange, RSA, Hekkink, JHA, Keizer, K & Burggraaf, AJ 1991, Microporous sol-gel modified membranes for hydrogen separation. in AJ Burggraaf, J Charpin & L Cot (eds), Inorganic Membranes ICIM2-91: Proceedings of the 2nd International Conference on Inorganic Membranes - ICIM2-91. Key Engineering Materials, vol. 61-62, Trans Tech Publications Ltd, pp. 77-82, 2nd International Conference on Inorganic Membranes, ICIM 1991, Montpellier, France, 1/07/91. https://doi.org/10.4028/www.scientific.net/KEM.61-62.77

Microporous sol-gel modified membranes for hydrogen separation. / de Lange, R.S.A.; Hekkink, J.H.A.; Keizer, K. et al.
Inorganic Membranes ICIM2-91: Proceedings of the 2nd International Conference on Inorganic Membranes - ICIM2-91. ed. / A.J. Burggraaf; J. Charpin; L. Cot. Trans Tech Publications Ltd, 1991. p. 77-82 (Key Engineering Materials; Vol. 61-62).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Microporous sol-gel modified membranes for hydrogen separation

AU - de Lange, R.S.A.

AU - Hekkink, J.H.A.

AU - Keizer, K.

AU - Burggraaf, A.J.

N1 - Conference code: 2

PY - 1991/12/1

Y1 - 1991/12/1

N2 - The topolayers of mesoporous ceramic γ-alumina membranes (rpore = 2.3 nm, 50% porosity) are modified with silica-based, microporous (rpore < 1 nm) systems using a sol-gel technique. These systems remain microporous up to 600°C with a porosity ≈ 30%. At 700°C the porosity is decreased to 10%, but the material is still microporous. Gas transport through these modified membranes is activated, with an activation energy of ≈ 11 kj/mol for hydrogen. A typical hydrogen permeability is 15*10-7 mol/m2 s.Pa at 100°C. Separation factors for H2/CH4 at 150°C of 200 are measured. The separation principle is probably 'molecular sieve'-like. Aging of silica modified membranes occurs in a water-containing atmosphere. In a period less than 1 month the activation energy for hydrogen permeation decreased, but no drastic changes in separation properties are observed. After two months, however, the permeability increased to a level of the nonmodified γ-alumina membranes.

AB - The topolayers of mesoporous ceramic γ-alumina membranes (rpore = 2.3 nm, 50% porosity) are modified with silica-based, microporous (rpore < 1 nm) systems using a sol-gel technique. These systems remain microporous up to 600°C with a porosity ≈ 30%. At 700°C the porosity is decreased to 10%, but the material is still microporous. Gas transport through these modified membranes is activated, with an activation energy of ≈ 11 kj/mol for hydrogen. A typical hydrogen permeability is 15*10-7 mol/m2 s.Pa at 100°C. Separation factors for H2/CH4 at 150°C of 200 are measured. The separation principle is probably 'molecular sieve'-like. Aging of silica modified membranes occurs in a water-containing atmosphere. In a period less than 1 month the activation energy for hydrogen permeation decreased, but no drastic changes in separation properties are observed. After two months, however, the permeability increased to a level of the nonmodified γ-alumina membranes.

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M3 - Conference contribution

AN - SCOPUS:0026395793

SN - 0878496254

T3 - Key Engineering Materials

SP - 77

EP - 82

BT - Inorganic Membranes ICIM2-91

A2 - Burggraaf, A.J.

A2 - Charpin, J.

A2 - Cot, L.

PB - Trans Tech Publications Ltd

T2 - 2nd International Conference on Inorganic Membranes, ICIM 1991

Y2 - 1 July 1991 through 4 July 1991

ER -

de Lange RSA, Hekkink JHA, Keizer K, Burggraaf AJ. Microporous sol-gel modified membranes for hydrogen separation. In Burggraaf AJ, Charpin J, Cot L, editors, Inorganic Membranes ICIM2-91: Proceedings of the 2nd International Conference on Inorganic Membranes - ICIM2-91. Trans Tech Publications Ltd. 1991. p. 77-82. (Key Engineering Materials). doi: 10.4028/www.scientific.net/KEM.61-62.77

Microporous sol-gel modified membranes for hydrogen separation

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