Citation: JI Guang-Hui, ZHU Cheng-Fei, CHANG Feng-Zhen. Structure Analysis of Beta-alumina Synthesized by Solid State Reaction[J]. Chinese Journal of Structural Chemistry, ;2014, 33(8): 1227-1233. shu

Structure Analysis of Beta-alumina Synthesized by Solid State Reaction

1.
College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China

Corresponding author: ZHU Cheng-Fei,
Received Date: 23 January 2014
Available Online: 23 April 2014
Fund Project: This project was supported by NSFC projects (21203095) (21203095) China Postdoctoral Science Foundation Projects (2012M511261) (2012M511261)

The crystal structure of a solid electrolyte, beta-Al₂O₃, was investigated by XRD analysis and demonstrated by Diamond software. Its chemical formula was verified by the Ag ion molten salt exchange method and X-ray fluorescence analysis (XRF). The chemical formula of β-Al₂O₃ is Na₂O·8.52Al₂O₃, and its crystal is of hexagonal, space group P6₃/mmc, with a=5.5941 Å and c=22.5300 Å. The chemical formula of β"-Al₂O is Na₂O·6.03Al₂O₃, and its crystal is of trigonal, space group R3 m, with a=5.6017 Å and c=33.6219 Å. The maximum span in the sodion migration of β"-phase (2.4283 Å) is only about a third of that for the β"-phase (6.9037 Å), so the β"-phase has higher ionic conductivity than the β-phase.
- beta-Al₂O₃,
- structure analysis,
- solid state reaction
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