Please use this identifier to cite or link to this item:
標題: A comparison on gas separation between PES (polyethersulfone)/MMT(Na-montmorillonite) and PES/TiO2 mixed matrix membranes
作者: Liang, Chia-Yu
Uchytil, Petr
Petrychkovych, Roman
Lai, Yung-Chieh
Friess, Karel
Sipek, Milan
Reddy, M.Mohan
Suen, Shing-Yi
關鍵字: Mixed matrix membrane;Polyethersulfone membrane;Sodium montmorillonite;Titanium dioxide;Gas permeation
Project: Separation and Purification Technology, Volume 92, page(s) 57–63.
Polyethersulfone (PES)-based mixed matrix membranes (MMMs) with the incorporation of inorganic fillers
of different shapes (lamellar Na-montmorillonite (MMT) clays and spherical TiO2 nanoparticles) were
prepared in this study, and the resulting MMMs were characterized by TGA, DSC, XRD, SEM, and TEM. It
was found that inorganic filler agglomeration became more serious at higher-filler-content MMMs. In the
case of PES/MMT MMMs, both the CO2 and CH4 permeabilities increased significantly with the increasing
filler content and consequently the gas selectivity was greatly reduced. At high MMT loadings (P10
wt.%), Knudsen diffusion became the predominant gas transport mechanism. A different trend was
achieved in the case of PES/TiO2 MMMs. The CO2/CH4 selectivity increased from 24.5 (pure PES membrane)
to a maximum value of 38.5 at 4 wt.% TiO2 MMM and then decreased with a further increase in
TiO2 content (e.g. 17.3 for 20 wt.%). The formation of interface voids and membrane defects in MMMs
contributed to the high gas permeabilities and low gas selectivity.
ISSN: 1383-5866
DOI: 10.1016/j.seppur.2012.03.016
Appears in Collections:化學工程學系所

Show full item record

Google ScholarTM




Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.