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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26599


    Title: Effects of poly(vinyl alcohol) content and calcination temperature on the characteristics of unsupported alumina membrane
    Authors: Yang,WP;Shyu,SS;Lee,ES;Chao,AC
    Contributors: 化學工程與材料工程學系
    Keywords: INORGANIC MEMBRANES;CERAMIC MEMBRANES;POROUS ALUMINA;SOL;GELS;SEPARATION;ALKOXIDES
    Date: 1996
    Issue Date: 2010-06-29 17:32:02 (UTC+8)
    Publisher: 中央大學
    Abstract: Nonsupported alumina porous membranes without pinholes or cracks were prepared by the sol-gel process using aluminum sec-butoxide as the starting material. The effects of using different PVA contents at various calcination temperatures on the characteristics of the membrane were investigated by scanning electron microscopy and nitrogen sorption porosimetry. The results after calcining at 450 degrees C for 5 hours showed that the range of pore size distributions increases with increasing PVA concentration. The active nucleus numbers of phase transition to alpha-alumina decreased as the content of PVA increased at about 1050 degrees C. The morphology of unsupported alumina membranes was affected by the PVA concentration and calcination temperature.
    Relation: SEPARATION SCIENCE AND TECHNOLOGY
    Appears in Collections:[化學工程與材料工程研究所] 期刊論文

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