I study spent catalyst recover and create used Pd.
A yellow salt was formed, which is the final step in the Pd recovery process.
At what temperature should yellow salt be calcined to make Pd concentrate sponge?
When I calcination it at 310℃ for 5 hours, it became black palladium powder, but it was not in the form of a palladium sponge.
Should I calcination at a temperature over 800℃ instead of 310℃?
I have another question.
Is it better to use hydrogen peroxide instead of nitric acid to dissolve precious metals?
How much ammonia should be added when recovering Pd?
A yellow salt was formed, which is the final step in the Pd recovery process.
At what temperature should yellow salt be calcined to make Pd concentrate sponge?
When I calcination it at 310℃ for 5 hours, it became black palladium powder, but it was not in the form of a palladium sponge.
Should I calcination at a temperature over 800℃ instead of 310℃?
I have another question.
Is it better to use hydrogen peroxide instead of nitric acid to dissolve precious metals?
How much ammonia should be added when recovering Pd?
Attachments
Last edited: