二氧化锝(化学式:TcO2)是锝的氧化物之一。它在酸性溶液中可以被Ce(IV)或碱性溶液中被H2O2氧化为高锝酸盐。[1]
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碳酸钠或碳酸氢钠和热的六氯合锝(VI)酸钾反应,生成TcO2·2H2O,将其真空干燥得到无水物。[2]
高锝酸铵在700~750°C的氮气中分解,可以得到二氧化锝。[2]
- 2 NH4TcO4 → 2 TcO2 + 4 H2O + N2↑
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