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滴水书生

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[交流] MnPO4合成疑问已有6人参与

Journal of Alloys and Compounds 454 (2008) 78–82
Serrabancaite, MnPO4·H2O compound was prepared by solution precipitation
method using Mn(NO3)2·4H2O (>99% purity, Fluka) and phosphoric acid
86.4%, w/w H3PO4, Merck) as starting materials and water–ethanol as base
agent. Five grams of Mn(NO3)2·4H2O was dissolved in 5mL of 70% H3PO4
and then 20mL of ethanol was added. The resulting solution was vigorously
stirred for 2 h at 40 ◦C and finally the gray-green precipitates were obtained.
This process can be explained by the following reaction:
Mn(NO3)2 · 4H2O(aq) + H3PO4(aq)→MnPO4 · H2O(s) + 2NO3− + 3H+ + 3H2O
这种方法能合成MnPO4吗?二价锰怎么转化成三价锰?
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