9kuuby9
Well-known member
- Joined
- Jan 28, 2012
- Messages
- 313
I Leeched Ag & Pd with 35% Nitric acid then I cemented them both With Copper.
The cement was washed several times and then digested in 35% Nitric acid.
The Solution was saturated with Ag and Pd. after filtration their has formed a plateau like yellowish type of crystals and some remaining black powders which was presumably Pt.
Then I added HCl to the filtrate to precipitate Ag as AgCl. I stirred the solution to ensure full precipitation of the AgCl (aside from the small soluble amount of AgCl in the solution)
When I was decanting and filtering the resulted solution, I noticed small needle shaped crystals; Which when described look like stalagmites. Emerging needles from a plateau like base which where colored orange-brown. (very fragile crystals)
After much of the solution was decanted from the AgCl containing vessel, I doubled the volume with distilled water and I also Added HCl. After much stirring and settling, The needle shaped crystals did not dissolve. Could this be some insoluble Palladium salt?
Quite the situation, Since it very hard to separate the two compounds from each other. NH4(OH) is also out of question since their is over 1 kg of AgCl present in the containing vessel.
Any help and or suggestion is appreciated! :mrgreen:
The cement was washed several times and then digested in 35% Nitric acid.
The Solution was saturated with Ag and Pd. after filtration their has formed a plateau like yellowish type of crystals and some remaining black powders which was presumably Pt.
Then I added HCl to the filtrate to precipitate Ag as AgCl. I stirred the solution to ensure full precipitation of the AgCl (aside from the small soluble amount of AgCl in the solution)
When I was decanting and filtering the resulted solution, I noticed small needle shaped crystals; Which when described look like stalagmites. Emerging needles from a plateau like base which where colored orange-brown. (very fragile crystals)
After much of the solution was decanted from the AgCl containing vessel, I doubled the volume with distilled water and I also Added HCl. After much stirring and settling, The needle shaped crystals did not dissolve. Could this be some insoluble Palladium salt?
Quite the situation, Since it very hard to separate the two compounds from each other. NH4(OH) is also out of question since their is over 1 kg of AgCl present in the containing vessel.
Any help and or suggestion is appreciated! :mrgreen: