Draeger
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Registered: 31-1-2020
Location: North-Rhine Westfalia, Germany
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Mood: Slowly getting ready for new projects
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Separating copper powder from copper hydroxide?
Hello. Basically, I have some copper powder with a greenish powder mixed into it, which I presume to be copper hydroxide. I know that I could just
pour something like acetic acid onto it, but I don't know if the powder will ignite or something with the added surface area.
So, I want to hear what you think might be the best method in this case.
Collected elements:
Al, Cu, Ga, C (coal), S, Zn, Na
Collected compounds:
Inorganic:
NaOH; NaHCO3; MnCl2; MnCO3; CuSO4; FeSO4; aq. 30-33% HCl; aq. NaClO; aq. 9,5% ammonia; aq. 94-96% H2SO4; aq. 3% H2O2
Organic:
citric acid, sodium acetate, sodium citrate, petroleum, mineral oil
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B(a)P
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Which product are you wanting to use, or is it both? What do you want to use the product for? The answer to these questions will determine the best
approach for separation.
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phlogiston
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Don't worry about ignition. Copper powder will not burn, nor react explosively with acetic acid.
Worst case scenario: you get lots of foaming and bubbling and the bubbling mass overflows out of your container.
Make sure to wash the cleaned copper powder extensively to remove residual acid, and dry it quickly or it will soon begin to oxidise again and you'll
be back to square one.
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"If a rocket goes up, who cares where it comes down, that's not my concern said Wernher von Braun" - Tom Lehrer |
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Draeger
Hazard to Others
Posts: 185
Registered: 31-1-2020
Location: North-Rhine Westfalia, Germany
Member Is Offline
Mood: Slowly getting ready for new projects
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Quote: Originally posted by B(a)P  | | Which product are you wanting to use, or is it both? What do you want to use the product for? The answer to these questions will determine the best
approach for separation. |
Both would be good, but I'm also okay with just keeping the copper.
| Quote: Originally posted by phlogiston | Don't worry about ignition. Copper powder will not burn, nor react explosively with acetic acid.
Worst case scenario: you get lots of foaming and bubbling and the bubbling mass overflows out of your container.
Make sure to wash the cleaned copper powder extensively to remove residual acid, and dry it quickly or it will soon begin to oxidise again and you'll
be back to square one. |
Alright. I'll try it out once I have another empty container.
Collected elements:
Al, Cu, Ga, C (coal), S, Zn, Na
Collected compounds:
Inorganic:
NaOH; NaHCO3; MnCl2; MnCO3; CuSO4; FeSO4; aq. 30-33% HCl; aq. NaClO; aq. 9,5% ammonia; aq. 94-96% H2SO4; aq. 3% H2O2
Organic:
citric acid, sodium acetate, sodium citrate, petroleum, mineral oil
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