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Citation: YANG Chang-Chun, HE Wei-Chun, SHI Qiu-Zhi. Preparation of K₂FeO₄ from Electrolytic Synthesized Na₂FeO₄[J]. Chinese Journal of Applied Chemistry, ;2002, 19(6): 564-568. shu

Preparation of K₂FeO₄ from Electrolytic Synthesized Na₂FeO₄

1.
a Department of Chemistry, Zhengzhou University, Zhengzhou 450052;
2.
b Department of Materials, Zhengzhou Polytechnic Institute, Zhengzhou

Corresponding author: YANG Chang-Chun,
Received Date: 8 October 2001
Available Online: 28 January 2002
Fund Project:

By electrolyzing iron net anode in 14 mol/L NaOH solution in a diaphragm electrolyzer with anodic chamber gap of 15 to 22 mm, Na₂FeO₄ in concentration of 0.23 to 0.32 mol/L could be obtained when the apparent anodic current density was of 160 to 280 A/m² and the electrolysis time for 5~6 hours. Adding the Na₂FeO₄ and KOH solutions alternately to the reactor at 20℃ and the reaction time of 30 min, the solid K₂FeO₄ with purity over 95% could be obtained after precipitation, washing and drying. It is found that the dissolution of K₂FeO₄ in solutions of KOH, NaOH and in their mixture was affected by common ion effect as well as strong salting-out effect. The reduction rate of soild K₂FeO₄ by methanol was proportional to the content of water in methanol solution.
- potassium ferrate,
- sodium ferrate,
- electrolysis preparation,
- double decomposition
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沈阳化工大学材料科学与工程学院沈阳 110142

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Preparation of K₂FeO₄ from Electrolytic Synthesized Na₂FeO₄