Neme
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Products of reaction
Platinum black powder can be manufactured from ammonium chloroplatinate by heating at 500 °C in molten sodium nitrate for 30 minutes.
I can't figure out all products of this reaction.
My guess: PtO2 + NH4Cl + NaCl + NO2 + some nitrogen oxides?
I can't find this reaction on internet, can you help me with this one?
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CuReUS
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https://en.wikipedia.org/wiki/Adams%27s_catalyst#Preparation
PtO2 is platinum dioxide whereas platinum black is a fine powder of Platinum.The two are not the same
[Edited on 17-11-2016 by CuReUS]
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Neme
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It is a two step synthesis which first step is heating ammonium chloroplatinate at 500 °C in molten sodium nitrate. Product of this reaction is
reduced to platinum black afterwards.
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CuReUS
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Quote: Originally posted by Neme  |
It is a two step synthesis which first step is heating ammonium chloroplatinate at 500 °C in molten sodium nitrate. Product of this reaction is
reduced to platinum black afterwards. |
then why have you written that you can get Pt black in the first step itself ?
| Quote: | | Platinum black powder can be manufactured from ammonium chloroplatinate by heating at 500 °C in molten sodium nitrate for 30 minutes.
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You don't mention the reduction step in your first post.So you can't blame me for thinking that you didn't know the difference between the two.
btw,decomposition of the ammonium salt-https://youtu.be/7B-EwKOqqv4?t=705
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Neme
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Well I kinda did but you are right I should have mentioned in top too, sorry!
The reation from wiki helped me to this, but I'm not sure if it is right
(NH4)2PtCl6 + 4NaNO3 -----> 2 NH4Cl + 4NaCl + PtO2 + 4NO2 + O2
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