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J. Korean Ceram. Soc. > Volume 50(6); 2013 > Article
Journal of the Korean Ceramic Society 2013;50(6): 485.
doi: https://doi.org/10.4191/kcers.2013.50.6.485
Hydrogen Permeation of SiC-CeO2 Composite Membrane by Dip-coating Process
Jihye Park, Miewon Jung
School of Biological Sciences and Chemistry / Institute of Basic science, Sungshin Women's University
A SiC-$CeO_2$ composite membrane was successfully fabricated using an ally-hydridopolycarbosilane (AHPCS) binder and treated by dip-coating at 60 times with a $CeO_2$ sol solution. The dip-coated SiC membrane was calcined at 773 K and then sintered at 1173 K under an air atmosphere. The coated membrane was characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and a BET surface analysis. The difference in permeation performance between $H_2$ and CO gases was measured by varying the temperature. The permeation flux of $H_2$ on the SiC membrane with layered $CeO_2$ was obtained as $8.45{times}10^{-6};mol/m^2sPa$ at room temperature. The CO permeation flux was $2.64{times}10^{-6};mol/m^2sPa$ at room temperature. The reaction enthalpy (${Delta}H^{circ}$) for the hydrogen permeation process was calculated as -7.82 J/mol by Arrhenius plots.
Key words: SiC membrane, $CeO_2$ sol solution, Dip-coating, Hydrogen permeation, Arrhenius plots
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