Sciencemadness Discussion Board

Production of nickel, copper and silver as potassium cyanide

autumnwilow - 23-11-2016 at 04:33

I have successfully produced very pure PGC by electrochemical preparation by using 40gpl of KCN as both the anode and cathode solution.

The anode was a 24k pure gold foil, the cathode was a 304 Stainless steel inside a porous cup. Voltage was around 12v.

Upon anode disintegration, the anode solution was boiled down to 25% volume, as the solution cools very white PGC precipitated. Washed with very cold water three times and was vacuum dried.

Now I wonder if the same procedure will work for Nickel, Copper and Silver? As their potassium cyanide salt form is not readily available in my country I have to prepare them myself.

PHILOU Zrealone - 30-11-2016 at 09:47

PGC? Potassium Gold cyanide?

autumnwilow - 4-12-2016 at 07:15

Quote: Originally posted by PHILOU Zrealone  
PGC? Potassium Gold cyanide?

Yes, exactly.

Fleaker - 21-12-2016 at 09:10

Silver I think yes. I don't know about the others.

DraconicAcid - 21-12-2016 at 09:55

K2[Ni(CN)4] is easily made by reaction of KCN with nickel cyanide (itself easily made by reaction of any soluble nickel salt with two equivalents of potassium cyanide).