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Preparation of beta-alumina powder from kaolin-derived aluminium sulphate solution

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Abstract

The synthesis of beta-alumina powder from kaolin-derived aluminium sulphate solution is described. A homogeneous mixture of Al2(SO4)3·18H2O and Na2SO4·10H2O was precipitated by dropping the mixed solution of the kaolin-derived aluminium sulphate and sodium hydroxide into ethanol with agitation by stirring. The preparation conditions - mixing mole ratio of Na2O/Al2O3 in the solution and calcination temperature of the resultant precipitate — were experimentally determined for obtaining the beta-alumina powder with a structure consisting of β- and β″-alumina and a well crystallized state.

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Authors and Affiliations

  1. Department of Inorganic Materials Engineering, Pusan National University, 609-735, Pusan, Korea

    H. K. Kang, H. C. Park & K. H. Kim

Authors
  1. H. K. Kang
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  2. H. C. Park
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  3. K. H. Kim
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Kang, H.K., Park, H.C. & Kim, K.H. Preparation of beta-alumina powder from kaolin-derived aluminium sulphate solution. J Mater Sci: Mater Electron 7, 385–389 (1996). https://doi.org/10.1007/BF00180774

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  • DOI: https://doi.org/10.1007/BF00180774

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