Journal of Applied Electrochemistry

, Volume 11, Issue 1, pp 77–82

Synthesis of potassium beta-alumina by thermal decomposition of a complex

Authors

  • T. Takahashi
    • Department of Applied Chemistry, Faculty of EngineeringNagoya University
  • K. Kuwabara
    • Department of Applied Chemistry, Faculty of EngineeringNagoya University
  • H. Ohyanagi
    • Department of Applied Chemistry, Faculty of EngineeringNagoya University
Article

DOI: 10.1007/BF00615325

Cite this article as:
Takahashi, T., Kuwabara, K. & Ohyanagi, H. J Appl Electrochem (1981) 11: 77. doi:10.1007/BF00615325

Abstract

Potassium beta-alumina was synthesised from potassiumm-alumina by a new technique. Thermal decomposition of a complex, trioxalatoaluminate K x (NH4)3−x [Al(C2O4)3] ·3H2O (0.091⩽x⩽ 0.333), resulted in the formation of a fine powder of Km-alumina with mullite-like structure. The decomposition process was studied by thermal analysis and X-ray diffraction, and the phase relation of the K2O-Al2O3 system is discussed in the mid-temperature region of 600–1200°C. The a.c. conductivity, the apparent density and the lattice parameters were measured. The complex decomposition was shown to be a suitable method for Kβ-alumina synthesis.

Copyright information

© Chapman and Hall Ltd 1981