Re: ORGLIST: Molecular Sieve

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From: James Giammarco (drexchem2008$##$gmail.com)
Date: Wed Nov 26 2008 - 12:30:05 EST


Hi Mohd Zulkefeli,
       In my experience, I find that using the sieves whole is just as good
as using them crushed and you will have an easier time to filter them if
they are whole. In any case, you have to remember to activate them by which
I mean heat them in a ceramic dish on a hot plate or as I did over a Bunsen
burner for a *short* period of time to remove any water. When you hold
about 5-6 in your hand and add a few drops of water, they should get HOT.
If they don't, they are already filled with water. Hope that helps some.

Sincerely
James Giammarco

On Wed, Nov 26, 2008 at 12:00 PM, <everybody-request$##$orglist.net> wrote:

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> Date: Wed, 26 Nov 2008 16:45:33 +0900 (JST)
> From: mohd zulkefeli <moha03jp$##$yahoo.co.jp>
> Subject: ORGLIST: Molecular Sieve
> To: everybody$##$orglist.net
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> Dear Colleagues,
>
> I would like to seek opinion on using molecular sieve during anhydrous
> reaction. Which one is more effective, using the molecular sieve in its
> original shape or crush it to the powder shape?
>
> Thank you very much.
>
> M. Zulkefeli
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-- 
Sincerely,

James M Giammarco MS&E Graduate Student Clemson University Office: Sirrine 060 Office #: 864-656-0888 jmgiamm$##$clemson.edu

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