TY - JOUR
T1 - Surface modification of mesoporous membranes by fluoro-silane coupling reagent for CO2 separation
AU - Abidi, N.
AU - Sivade, A.
AU - Bourret, D.
AU - Larbot, A.
AU - Boutevin, B.
AU - Guida-Pietrasanta, F.
AU - Ratsimihety, A.
PY - 2006/2/15
Y1 - 2006/2/15
N2 - The potential of hybrid organic-inorganic membranes for separating organic molecules from air, based on solubility selective mechanism, was evaluated. Alumina and titana membranes with average pore size near 4 nm were surface modified using trimethoxysilane fluorinated coupling reagent. The permeabilities to helium, nitrogen, methane, ethane, propane, butane and carbon dioxide were evaluated at feed pressures lying between (1.5 × 105 and 3.5 × 105 Pa) 1.5 and 3.5 bar and permeate outlet near 1 × 105 Pa (1 bar). The permeabilities of the grafted membranes generally decreased by about two to three orders of magnitude compared with the untreated membranes. The CO2/N2 permselectivity increased significantly in the case of the TiO2 grafted membrane. The membranes performances were compared and the TiO2 grafted membrane exhibits higher permselectivity and permeability, so that, it is a good candidate for CO2 to N2 separation and CO2 to hydrocarbon separation.
AB - The potential of hybrid organic-inorganic membranes for separating organic molecules from air, based on solubility selective mechanism, was evaluated. Alumina and titana membranes with average pore size near 4 nm were surface modified using trimethoxysilane fluorinated coupling reagent. The permeabilities to helium, nitrogen, methane, ethane, propane, butane and carbon dioxide were evaluated at feed pressures lying between (1.5 × 105 and 3.5 × 105 Pa) 1.5 and 3.5 bar and permeate outlet near 1 × 105 Pa (1 bar). The permeabilities of the grafted membranes generally decreased by about two to three orders of magnitude compared with the untreated membranes. The CO2/N2 permselectivity increased significantly in the case of the TiO2 grafted membrane. The membranes performances were compared and the TiO2 grafted membrane exhibits higher permselectivity and permeability, so that, it is a good candidate for CO2 to N2 separation and CO2 to hydrocarbon separation.
KW - Ceramic membrane
KW - Fluorosilane
KW - Gas permeation
KW - Grafted membranes
KW - Surface modification
UR - http://www.scopus.com/inward/record.url?scp=30944450775&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2005.06.054
DO - 10.1016/j.memsci.2005.06.054
M3 - Article
AN - SCOPUS:30944450775
VL - 270
SP - 101
EP - 107
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
IS - 1-2
ER -