二氧化鍀(化學式:TcO2)是鍀的氧化物之一。它在酸性溶液中可以被Ce(IV)或鹼性溶液中被H2O2氧化為高鍀酸鹽。[1]
製備
碳酸鈉或碳酸氫鈉和熱的六氯合鍀(VI)酸鉀反應,生成TcO2·2H2O,將其真空乾燥得到無水物。[2]
高鍀酸銨在700~750°C的氮氣中分解,可以得到二氧化鍀。[2]
- 2 NH4TcO4 → 2 TcO2 + 4 H2O + N2↑
參考文獻
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