ORGLIST:Regenerating molecular sieve 4A

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From: Andrea Giordano (andrea.giordano$##$mlib.cnr.it)
Date: Fri Jul 12 2002 - 19:39:01 EDT

hello all,

this may sound curious, or maybe a nonsense, but anyway...

I suppose many of you had the chance to use molecular sieves (the one with
blue indicator for istance) to dry/store liquids.
Well, when I had to regenerate them, I simply used a common oven for
glassware, 'cause it's the only one we have in the lab.
Usually temp. is set to 140° C, or something, and we just leave it that way;
that value seems to be enough for regenerating the sieves, at least I always
observed the apparence of the blue color of the indicator (after having left
in the oven for 2/3 days).
Anyway, it's written that temp. should be higher for regenerating...

Just wondering.....could you use a microwave oven (after having purged the
sieves with water, of course...) to regenerate them??

thanks!
A. Giordano
IMC-CNR
Rome.

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