Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 19-25 |
| Journal | Journal of membrane science |
| Volume | 446 |
| DOIs | |
| Publication status | Published - 2013 |
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Keywords
- METIS-296810
- IR-87830
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Influence of sol-gel process parameters on the micro-structure and performance of hybrid silica membranes. / Qureshi, H.F.; Nijmeijer, Arian; Winnubst, Aloysius J.A.
In: Journal of membrane science, Vol. 446, 2013, p. 19-25.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Influence of sol-gel process parameters on the micro-structure and performance of hybrid silica membranes
AU - Qureshi, H.F.
AU - Nijmeijer, Arian
AU - Winnubst, Aloysius J.A.
PY - 2013
Y1 - 2013
N2 - A facile, versatile and reproducible sol–gel process to make microporous organosilica membranes by using 1,2-bis (triethoxysilyl) ethane (BTESE) as a precursor is reported. The influence of process parameters on sol particle size and rheology of BETSE-derived sols was investigated to produce defect-free composite membranes by a single dipping procedure and subsequent calcination. The microporous structure of a BTESE layer on mesoporous alumina supports enabled selective molecular sieving of gas molecules. Single gas permeation (SGP) experiments, performed at 200 C, showed that a H2/CH4 permselectivity of 24 was reproducibly achieved. NoSF6 gas permeance through these membranes proof the presence of a defect-free microstructure. SEM cross-section analysis showed a hybrid selective layer with a thickness dependent on the sol precursor concentration.
AB - A facile, versatile and reproducible sol–gel process to make microporous organosilica membranes by using 1,2-bis (triethoxysilyl) ethane (BTESE) as a precursor is reported. The influence of process parameters on sol particle size and rheology of BETSE-derived sols was investigated to produce defect-free composite membranes by a single dipping procedure and subsequent calcination. The microporous structure of a BTESE layer on mesoporous alumina supports enabled selective molecular sieving of gas molecules. Single gas permeation (SGP) experiments, performed at 200 C, showed that a H2/CH4 permselectivity of 24 was reproducibly achieved. NoSF6 gas permeance through these membranes proof the presence of a defect-free microstructure. SEM cross-section analysis showed a hybrid selective layer with a thickness dependent on the sol precursor concentration.
KW - METIS-296810
KW - IR-87830
U2 - 10.1016/j.memsci.2013.06.024
DO - 10.1016/j.memsci.2013.06.024
M3 - Article
VL - 446
SP - 19
EP - 25
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
ER -