<p><b>三氟化釩</b>是一種化合物，化學式VF<sub>3</sub>。這種黃綠色耐火固體是通過兩步過程從V<sub>2</sub>O<sub>3</sub>獲得的。</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>第一步是由三氧化二釩和氟化氫銨反應，形成中間體六氟合釩(III)酸鹽：
</p>
<dl><dd>V<sub>2</sub>O<sub>3</sub> + 6 (NH<sub>4</sub>)HF<sub>2</sub> → 2 (NH<sub>4</sub>)<sub>3</sub>VF<sub>6</sub> + 3 H<sub>2</sub>O</dd></dl><p>第二步由六氟合釩(III)酸鹽分解為氨、氟化氫和三氟化釩：
</p>
<dl><dd>(NH<sub>4</sub>)<sub>3</sub>VF<sub>6</sub> → 3 NH<sub>3</sub> + 3 HF + VF<sub>3</sub></dd></dl><h2><span id=".E5.8F.82.E8.80.83.E8.B5.84.E6.96.99"></span><span id="参考资料">參考資料</span></h2>

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**三氟化釩**是一種化合物，化學式 VF3。這種黃綠色耐火固體是通過兩步過程從 V2O3 獲得的。

## 製備

第一步是由三氧化二釩和氟化氫銨反應，形成中間體六氟合釩 (III) 酸鹽：

　
: V2O3 + 6 (NH4)HF2 → 2 (NH4)3VF6 + 3 H2O

第二步由六氟合釩 (III) 酸鹽分解為氨、氟化氫和三氟化釩：

　
: (NH4)3VF6 → 3 NH3 + 3 HF + VF3

## 參考資料
10049-12-4