TY - JOUR
T1 - Characterization and transport properties of surfactant-templated silica layers for membrane applications
AU - Radosevic-Zivkovic, T.
AU - Benes, Nieck Edwin
AU - Blank, David H.A.
AU - Bouwmeester, Henricus J.M.
PY - 2004
Y1 - 2004
N2 - An intermediate surfactant-templated silica (STS) layer is applied between the supporting mesoporous gamma-Al2O3 and the amorphous microporous silica overlayer resulting in dual-layered microporous silica membranes for gas separation applications that show improved values for both hydrogen flux and selectivity. Determination of thickness and porosity of as-deposited membrane layers by spectroscopic ellipsometry reveals that the STS layer is present as a distinctive layer of sim20 nm thickness, with penetration up to a depth of sim70 nm into the underlying gamma-Al2O3support layer, whose thickness and porosity are determined to be 1.3 mgrm and 50%, respectively.
AB - An intermediate surfactant-templated silica (STS) layer is applied between the supporting mesoporous gamma-Al2O3 and the amorphous microporous silica overlayer resulting in dual-layered microporous silica membranes for gas separation applications that show improved values for both hydrogen flux and selectivity. Determination of thickness and porosity of as-deposited membrane layers by spectroscopic ellipsometry reveals that the STS layer is present as a distinctive layer of sim20 nm thickness, with penetration up to a depth of sim70 nm into the underlying gamma-Al2O3support layer, whose thickness and porosity are determined to be 1.3 mgrm and 50%, respectively.
KW - METIS-220179
KW - IR-48599
U2 - 10.1023/B:JSST.0000047988.80914.20
DO - 10.1023/B:JSST.0000047988.80914.20
M3 - Article
VL - 31
SP - 205
EP - 208
JO - Journal of sol-gel science and technology
JF - Journal of sol-gel science and technology
SN - 0928-0707
IS - 1
ER -