Citation:
CHEN Hai-Qun, ZHU Jun-Wu, WANG Hai-Jing, YANG Xu-Jie, LU Lu-De, WANG Xin. Inhibition of Phosphine Liberation from Red Phosphorus[J]. Chinese Journal of Applied Chemistry,
;2004, 21(11): 1141-1144.
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The influences of trace materials on the liberation of PH3 from red phosphorus and the way to slow down the liberation have been studied by headspace gas chromatography and accelerated aging tests. It has been found that the liberation of PH3 from commercial red phosphorus is mainly due to its reaction with water. Trace amount of metal ions such as iron, copper, nickel and chromium greatly affected the liberation of PH3. It is found that addition of 1%(mass fraction) nano-magnesium hydroxide can slow down the PH3 liberation significantly and result in a yield of less than 0.4 mg/(m3·d) from the oven-dried red phosphorus, without changing the dispersibility and fluidity of the phosphorus.
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Keywords:
- red phosphorus,
- accelerated aging tests,
- phosphine
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