Chinese Journal of Applied Chemistry ›› 1996, Vol. 0 ›› Issue (5): 70-72.

• Report • Previous Articles     Next Articles

Stability of Peroxyniobium-Containing Tungstophosphoric Heteropoly Complexes

Gong Jian1, Wei Yonghui1, Qu Lunyu3   

  1. 1. Department of Protective Medicine, Jilin Medical College, Jilin 132001;
    2. Department of Chemistry, Northeast Normal University, Changchun
  • Received:1995-10-24 Revised:1996-05-04 Published:1996-10-10 Online:1996-10-10

Abstract: Thermal stability of tungstophosphoric heteropoly complexes containing NbO2 with Dawson structure is studied. The total loss of crystallization water occurs below 200℃. The anhydrous acids decompose at 600℃ or so. The XPS determination shows that the electron binding energy of Nb3d5/2 decreases with the increasing number of substituted NbO2 groups.

Key words: heteropoly complex, NbO2 substitution, Dawson structure, stability