Hello everybody,
I have a solution of Pd(NH3)4Cl2 that I got by refining spent leaching solution of gold. I did many cycles of ammonia (dissolution)/ chlorhydric acid (precipitation) and I got this pretty pure solution of Pd(NH3)4Cl2.
Now, I would like to extract metallic palladium (Pd) from the solution by electrowinning. But I don't know which cathode and anode material I should choose, which current density is the best ?
By the way, if someone could explain me the reactions occurring during the electrochemical process it will be great and really helpful.
Thank you very much in advance.
Best regards,
Pierre Schutz
Could you please try to use sodium formate or formic acid to reduce Pd from solution. In Poland we have solutions containing platinum and palladium in the form of Na2PtCl6 and Na2PdCl4 and they are used to obtain a mixture of metallic palladium and platinum using NaCOOH and NaOH. The process takes place at 80 °C, the consumption of sodium formate is 0.65 kg/1 kg Pd and 0.35 kg/1 kg Pt. The solution after reduction process contains
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