Preparation and corrosion-resistant property of mesoporous ZrO2 membrane

Hong Qi, Xiao Luo Jiang, Jing Han, Yi Qun Fan, Wei Hong Xing

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

Preparation and characterization of mesoporous ZrO2 membrane with the pore sizes less than 10 nm were studied. A stable ZrO2 sol with a mean particle size about 100 nm was successfully synthesized with zirconium n-propoxide as precursor through a colloidal sol-gel route. PVA was selected as the drying chemical controlling additive to modulate the viscosity of sol suitable for membrane formation. Y(NO3)3·6H2O was used as a Y-precursor to form Y-stabilized ZrO2. Defect-free mesoporous ZrO2 membrane superimposed on a-Al2O3 support disk with a mean pore size of 70 nm was fabricated via dip-coating and subsequently calcined in the temperature range of 450-650°C. The effect of calcination temperature on the properties of unsupported ZrO2 membrane (powder) as well as the supported ZrO2 membranes was studied in detail. The molecular weight cut off (MWCO) and mean pore size of mesoporous ZrO2 membrane were in the range of 19500-62600 and 7.3-13 nm, respectively. The optimized membrane with an average pore size of 7.3 nm showed a MWCO value of 19500 after heat treatment at 450°C. The corrosion resistance of ZrO2 membrane showed a relative high stability, as proved by the variation of MWCO of PEG after the membrane was treated with HNO3 and NaOH.

源语言英语
页(从-至)1216-1221
页数6
期刊Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering
9
6
出版状态已出版 - 12月 2009

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