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Citation: Gong Jian, Wei Yonghui, Qu Lunyu. Stability of Peroxyniobium-Containing Tungstophosphoric Heteropoly Complexes[J]. Chinese Journal of Applied Chemistry, ;1996, 13(5): 70-72. shu

Stability of Peroxyniobium-Containing Tungstophosphoric Heteropoly Complexes

1.
1. Department of Protective Medicine, Jilin Medical College, Jilin 132001;
2.
2. Department of Chemistry, Northeast Normal University, Changchun

Received Date: 24 October 1995
Available Online: 4 May 1996

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 Nb_{3d_5/2} decreases with the increasing number of substituted NbO₂ groups.
- heteropoly complex,
- NbO₂ substitution,
- Dawson structure,
- stability
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