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August 31, 2010
Here's a lab question for everyone. I have a bottle of Aldrich copper oxide nanopowder on my lab bench; I've been meaning to try it out for some Ullmann reactions. I note that Aldrich (and others) are now selling a variety of such nanopowders, mostly metals and insoluble metal compounds.
And that makes sense, because these are the things that tend to react at their surfaces, and you'd have to think that a real nanopowder would have a tremendous surface area. My question is: does this really work out? Has anyone noticed a difference between the nanopowder form of a particular reagent and its more traditional one? I can imagine there being one - but I can also imagine the particles clumping up under some conditions and giving you back the equivalent of the cheaper stuff, too. Any hands-on experience out there?
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