Abstract
Porous alumina membranes were prepared by anodic oxidation of aluminum in an aqueous solution of oxalic acid. The thermal and chemical stabilities of porous alumina membranes were investigated by thermal analysis and corrosion test. Alumina membranes prepared in oxalic electrolyte had fairly good thermal stability, but they reacted with boiling water to form boehmite, which blocked pores on the surface of the membrane. For acid and alkali resistance, the membranes were estimated to have chemical stability in aqueous acidic and alkaline solution at 1< pH < 12. On the other hand, pore size and its distribution were not changed at the time of thermal treatment. Polycrystalline alumina membrane obtained by thermal treatment for 3 h at 900 ‡C could suppress corrosion reaction and enhance their resistance in acid and alkaline solution.
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References
Hsieh, H. P., Bhave, R. R. and Fleming, H. L., “Microporous Alumina Membranes,”J. Membrane Sci.,39,221 (1988).
Korean Aluminum Surface Treatment Cooperation, “Aluminum Surface Treatment,” (1993).
Larbot, A., Fabre, R. R., Guizard, C. and Cot, L., “Inorganic Membranes Obtained by Sol-Gel Techniques,”J. Membrane Sci.,39, 203 (1988).
Lee, C.W., Chang, Y. H. and Hahm, Y.M., “Preparation of Porous Alumina Membrane by Anodic Oxidation in Sulfuric Acid,”HWAHAK KONGHAK,36, 653 (1998).
Lee, C.W., Hong, Y. H., Chang, Y. H. and Hahm, Y. M., “Preparation of Inorganic Ultrafiltration Membrane by Anodic Oxidation in Oxalic Acid,”J. of Kor. Ind. and Eng. Chem.,9(4), 536 (1998).
Leenaars, A. F. and Burggraaf, A. J., “The Preparation and Characterization of Alumina Membranes with Ultrafine Pores. 2. The Formation of Supported Membranes,”J. Colloid Interface Sci.,105, 27 (1985).
Mardilovich, P. P., Govyadinov, A. N., Mukhurov, N. I., Rzhevskii, A. M. and Paterson, R., “New and Modified Anodic Alumina Membranes Part I. Thermotreatment of Anodic Alumina Membranes,”J. Membrane Sci.,98, 131 (1995).
Mardilovich, P. P., Govyadinov, A. N., Mukhurov, N. I. and Paterson, R., “New and Modified Anodic Alumina Membranes Part II. Comparison of Solubility of Amorphous (normal) and Polycrystalline Anodic Alumina Membranes,”J. Membrane Sci.,98, 143 (1995).
Winston Ho, W. S. and Sirkar, K. K., Membrane Handbook, 391 (1991).
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Lee, CW., Kang, HS., Chang, YH. et al. Thermotreatment and chemical resistance of porous alumina membrane prepared by anodic oxidation. Korean J. Chem. Eng. 17, 266–272 (2000). https://doi.org/10.1007/BF02699038
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DOI: https://doi.org/10.1007/BF02699038