A study on the nonstoichiometry of tin oxides by coulometric titration
作者： Y LIZI , S ZHITONG , W CHANZHENG
DOI: 10.1016/0167-2738(92)90220-J
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摘要: Abstract In this investigation, nonstoichiometries and defect structures of tin oxides were studied between 694 990 K by coulometric titration using solid state electrolyte (YSZ) cells. The relationship nonstoichiometry the oxide (x) equilibrium oxygen partial pressure (Po2) was expressed proportionality: xαP O 2 − 1 6 . An intermediate phase, Sn3O4 Sn SnO2 observed in temperature range 696–732 K. standard Gibbs energy formation via reaction; 3 4 → + found to be ΔG o = −1163960+417.36 T ( J mol ) change for reaction SnO2−x calculated SnO 2− x 3.05×10 5 −38.97 ))
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