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Topic: How can I activate the copper powder?  (Read 3410 times)

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Offline 101why?

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How can I activate the copper powder?
« on: October 29, 2016, 04:32:03 AM »
I have one bottle of 50 mesh copper powder, 96%.(non-activated)

How can I get activated copper powder from that?

Any suggestions?

Thank you very much.
« Last Edit: October 29, 2016, 07:03:21 AM by Arkcon »

Offline Arkcon

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Re: How can I activate the copper powder?
« Reply #1 on: October 29, 2016, 07:09:05 AM »
That really depends on the sense in which you mean "activated," you're using something like jargon, even if its scientifically apt.  A quick Google leads to this reference:  http://pubs.acs.org/doi/abs/10.1021/jo01333a050  So if you mean in that sense, highly reactive nano-szised copper particles, then you want to do it the way the reference says.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline 101why?

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Re: How can I activate the copper powder?
« Reply #2 on: October 29, 2016, 11:21:08 AM »
I intend to dimerize the 2,5-dibromonitrobenzene.

According to
http://www.worldscientific.com/doi/abs/10.1142/S025676790800287X

Activated copper powder is needed.

Can I use the copper powder that I have or I need to synthesize the highly reactive nano-sized copper particles as this reference?

A quick Google leads to this reference:  http://pubs.acs.org/doi/abs/10.1021/jo01333a050  So if you mean in that sense, highly reactive nano-szised copper particles, then you want to do it the way the reference says.

Mod edit: Link modified due to copyright infringement. Dan
« Last Edit: March 26, 2017, 09:25:18 AM by Dan »

Offline Arkcon

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Re: How can I activate the copper powder?
« Reply #3 on: October 30, 2016, 10:10:02 AM »
I 'm not sure, but maybe some of our organic chemistry experts can help you.  As another example, here's a reference for a Suzuki cross-coupling using activated copper powder: http://pubs.acs.org/doi/abs/10.1021/cm040142i?src=recsys&journalCode=cmatex

I don't know what "activation" means in these references, in the context of the reactions in question.  I assumed it wasn't possible to just grind up some copper powder.  But here's a reference where that is exactly the case: http://link.springer.com/article/10.1007/s10789-005-0029-9

Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

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