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Preparation of Al2O3 ultrafiltration Membranes with Inorganic Precursors

LI Yueming, ZHOU Jianer, LU Peiwen, MA Guanghua, GU Xingyong

（Jingdezhen Ceramic Institute‚∗Nanjing Industry University）

Abstract: In this paper‚stable and transparent boehmite sol was prepared by sol－gel method with inorganic salt Al（NO）3 and NH3·H2O as raw materials．The boehmite sol was coated on the Al2O3 supports by dipping－coating technology．The combination technology condition of top－tapers and supports were also studied．Then the pore diameter well－distribution and no defect Al2O3 ultrafiltration membrane was prepared．

Keywords: inorganic salt Al（NO）3‚ultrafiltration membrane‚sol－gel method‚ Al2O3 ultrafiltration


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