K3RhCl6

[Volpotto]

Hi everyone,

I am new to the Forum and I need your help.
I have some potassium hexachlororodate K₃RhCl₆ that I no longer use and would like to separate pure rhodium from it.
How can I do?
Please note that I work in a fairly well equipped chemical lab and am used to handling chemicals and using general lab equipments.
Thank you very much for your attention.

[ChenBeier]

You can try electrolysis or reduction with strong reducer, like SnCl₂ or v
Ascorbic acid.

[Volpotto]

Thank you ChenBeier.

I had also thought electrolysis but I have no idea about the right​​ process conditions (e.g. type of electrodes, electric potential, concentration)...

[ChenBeier]

I would react the salt first with sulfuric acid, to get rid of the Chloride.
The remaining Rhodiumsulfate can be electrolysed. Cathode what ever you like. Anode carbon preferred.