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Synthesis and Characterization of Sol-Gel Derived Mesoporous Titania/Alumina Membranes  

Kwon, Hyuk-Taek (Department of Chemical Engineering, Kyung Hee University)
Kim, Jin-Soo (Department of Chemical Engineering, Kyung Hee University)
Publication Information
Membrane Journal / v.21, no.3, 2011 , pp. 229-235 More about this Journal
Abstract
In this study, mesoporous titania/alumina membranes were prepared by sol-gel method. Pore structure and phase composition of titania/alumina membranes could be changed by calcination temperature. The addition of alumina into titania membranes retarded anatase-to-rutile phase transformation, resulting in stabilization of pore structures. The 5 time dip-coated membrane calcined at $450^{\circ}C$ is about $10.3{\mu}m$ in thickness with an average pore size of 5 nm. Hydrogen and nitrogen permeances through the membrane were $17.1{\times}10^{-7}mol/m^2{\cdot}s{\cdot}Pa$ and $4.7{\times}10^{-7}mol/m^2{\cdot}s{\cdot}Pa$, respectively. These data were explained by the Knudsen diffusion mechanism.
Keywords
titania; alumina; sol-gel; mesoporous; Knudsen diffusion;
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Times Cited By KSCI : 3  (Citation Analysis)
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