<p><b>錳酸鹽</b>廣義上是指錳的含氧酸鹽。但通常所說的錳酸鹽特指MnO<span>2−<br>4</span>離子所對應的+6價的錳酸鹽。錳(VI)酸鹽是唯一已知的含Mn(VI)的物種。</p>
<h2><span id=".E9.94.B0.E9.85.B8.E7.9B.90.E7.9A.84.E5.88.B6.E5.A4.87"></span><span id="锰酸盐的制备">錳酸鹽的製備</span></h2>

<p>錳酸鈉和錳酸鉀可以通過對應的高錳酸鹽和其氫氧化物濃溶液(5–10 M)反應24 h或加熱得到。</p>
<dl><dd><span>4 MnO<span>−<br>4</span></span> + <span>4 OH<sup>−</sup></span> → <span>4 MnO<span>2−<br>4</span></span> + <span>2 H<sub>2</sub>O</span> + O<sub>2</sub></dd></dl><p>工業上，錳酸鉀通過二氧化錳和熔融的氫氧化鉀與硝酸鉀（或空氣作為氧化劑）反應得到：</p>
<dl><dd><span>2 MnO<sub>2</sub></span> + <span>4 OH<sup>−</sup></span> + O<sub>2</sub> → <span>2 MnO<span>2−<br>4</span></span> + <span>2 H<sub>2</sub>O</span></dd></dl><h2><span id=".E5.85.B6.E5.AE.83.E4.BB.B7.E6.80.81.E7.9A.84.E9.94.B0.E9.85.B8.E7.9B.90"></span><span id="其它价态的锰酸盐">其它價態的錳酸鹽</span></h2>
<p>錳酸鹽還存在+3、+4和+5相對低價的錳酸鹽以及+7價的高錳酸鹽。
</p>
<h2><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span><span id="参考文献">參考文獻</span></h2>

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**錳酸鹽**廣義上是指錳的含氧酸鹽。但通常所說的錳酸鹽特指 MnO2− 
4 離子所對應的 + 6 價的錳酸鹽。錳 (VI) 酸鹽是唯一已知的含 Mn (VI) 的物種。

## 錳酸鹽的製備

錳酸鈉和錳酸鉀可以通過對應的高錳酸鹽和其氫氧化物濃溶液 (5–10 M) 反應 24 h 或加熱得到。

　
: 4 MnO− 
4 + 4 OH− → 4 MnO2− 
4 + 2 H2O + O2

工業上，錳酸鉀通過二氧化錳和熔融的氫氧化鉀與硝酸鉀（或空氣作為氧化劑）反應得到：

　
: 2 MnO2 + 4 OH− + O2 → 2 MnO2− 
4 + 2 H2O

## 其它價態的錳酸鹽

錳酸鹽還存在 + 3、+4 和 + 5 相對低價的錳酸鹽以及 + 7 價的高錳酸鹽。

## 參考文獻
14333-14-3