| 高铁酸钾热分解的研究 |
| A STUDY OF THE THERMAL DECOMPOSITION OF K2FeO4 |
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| 摘要: 本文采用差热热重仪、穆斯堡尔谱仪、X射线光电子能谱仪和X射线衍射仪等分析仪器,研究了高铁酸钾的热分解过程,提出热分解产物可能形成固熔体的看法。 |
| 关键词: 高铁酸钾 热分解 |
| 基金项目: |
Abstract: The thermal decomposition process of a hexavalent iron compound, K2FeO4, was studied by means of the thermogravimetrical and differential thermoanalytical techniques, Mossbauer spectroscopy and X-ray diffraction technique.The sample was confirmed to be a single phase of K2FeO4 by the X-ray diffraction technique.The compound began to decompose in air at about 310℃. The intermediate valence states, Fe5+ or Fe4+, were not observed during the decomposition process.So it was concluded that Fe6+ ions in K2FeO4 were directly reduced to Fe3+ ions in KFeO2. The product formed solid solution compound, which continued to decompose in air at 680℃, firming K2O·2KFeO2.The product showed a paramagnetic Mossbauer spectrum at 400℃ with an isomer shift and quadrupolc splitting of -0.016 mm/s and 0.023mm/s respectively. The binging energy of OlT, Fe2p3/2 and K2p3/2 in both the sample and product have been measured and discussed.Thedecomposition process may be expressed by the equation:  |
| Keywords: potassium ferrate thermal decomposition |
| 投稿时间：1988-01-05 |
| 摘要点击次数: 1551 |
| 全文下载次数: 1750 |
| 蒋凤生,冯长春,周志浩,张毓昌.高铁酸钾热分解的研究[J].无机化学学报,1990,6(2):136-140. |
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