Preparation and characterization of microporous sol-gel derived ceramic membranes for gas separation applications

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

doi:10.1557/PROC-271-505

Preparation and characterization of microporous sol-gel derived ceramic membranes for gas separation applications

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

Inorganic Materials Science

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Mesoporous alumina membranes were modified with microporous silica. The polymeric silica sols consist of very weakly branched polymeric molecules with a fractal dimension of 1.3 and Guinier radius of ≈ 2.0 nm. The resulting top layer material is microporous with a porosity of 40% and a layer thickness of 60 nm. Gas transport is activated with an activation energy of 11 kJ/mol for hydrogen and molecular sieve like separation factors have been obtained. From the mechanism of gas transport the conclusion can be drawn that the pores are of molecular dimensions (0.7–1 nm diameter).

Original language	English
Pages (from-to)	505-510
Number of pages	6
Journal	Materials Research Society symposia proceedings
Volume	271
DOIs	https://doi.org/10.1557/PROC-271-505
Publication status	Published - 1993

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abstract = "Mesoporous alumina membranes were modified with microporous silica. The polymeric silica sols consist of very weakly branched polymeric molecules with a fractal dimension of 1.3 and Guinier radius of ≈ 2.0 nm. The resulting top layer material is microporous with a porosity of 40% and a layer thickness of 60 nm. Gas transport is activated with an activation energy of 11 kJ/mol for hydrogen and molecular sieve like separation factors have been obtained. From the mechanism of gas transport the conclusion can be drawn that the pores are of molecular dimensions (0.7–1 nm diameter).",

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T1 - Preparation and characterization of microporous sol-gel derived ceramic membranes for gas separation applications

AU - de Lange, R.S.A.

AU - Hekkink, J.H.A.

AU - Keizer, K.

AU - Burggraaf, A.J.

PY - 1993

Y1 - 1993

N2 - Mesoporous alumina membranes were modified with microporous silica. The polymeric silica sols consist of very weakly branched polymeric molecules with a fractal dimension of 1.3 and Guinier radius of ≈ 2.0 nm. The resulting top layer material is microporous with a porosity of 40% and a layer thickness of 60 nm. Gas transport is activated with an activation energy of 11 kJ/mol for hydrogen and molecular sieve like separation factors have been obtained. From the mechanism of gas transport the conclusion can be drawn that the pores are of molecular dimensions (0.7–1 nm diameter).

AB - Mesoporous alumina membranes were modified with microporous silica. The polymeric silica sols consist of very weakly branched polymeric molecules with a fractal dimension of 1.3 and Guinier radius of ≈ 2.0 nm. The resulting top layer material is microporous with a porosity of 40% and a layer thickness of 60 nm. Gas transport is activated with an activation energy of 11 kJ/mol for hydrogen and molecular sieve like separation factors have been obtained. From the mechanism of gas transport the conclusion can be drawn that the pores are of molecular dimensions (0.7–1 nm diameter).

KW - n/a OA procedure

U2 - 10.1557/PROC-271-505

DO - 10.1557/PROC-271-505

M3 - Article

SN - 0272-9172

VL - 271

SP - 505

EP - 510

JO - Materials Research Society symposia proceedings

JF - Materials Research Society symposia proceedings

ER -

Preparation and characterization of microporous sol-gel derived ceramic membranes for gas separation applications

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