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http://dx.doi.org/10.4191/KCERS.2002.39.12.1153

Preparation of Asymmetric Ceramic Membrane by Coating-Pyrolysis Process  

Ryu, Hyun-Wook (Department of Ceramic Engineering, Chonnam National University)
Kim, Byung-Hoon (Department of Ceramic Engineering, Chonnam National University)
Publication Information
Abstract
The fabrication of a three-layered asymmetric ceramic membrane was performed by slip casting of the porous alumina support and dip coating of the alumina intermediate layer using high purity ${\alpha}-Al_2O_3$ powders that have different particle size, followed by screen printing-pyrolysis of the $Tio_2$ layer as an ultrafilteration membrane using Ti-naphthenate solution. The bending strength, porosity and mean pore size of the alumina support were 231 kg/$cm^2$s, 30.26% and 0.19 ${mu}m$, respectively. The thickness of the intermediate layer was 30 ${mu}m$ and the mean pore size of that was 0.063 ${mu}m$. Also, the top layer was 0.5 ${mu}m$ thick and micropores with about 20 nm size were formed uniformly.
Keywords
$TiO_2$ membrane; Porous alumina; Ti-naphthenate; Pyrolysis process;
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Times Cited By KSCI : 1  (Citation Analysis)
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