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- Newsgroups: sci.chem
- Path: sparky!uunet!wupost!monsanto.com!bb1t.monsanto.com!bjgaed
- From: bjgaed@bb1t.monsanto.com
- Subject: Re: molecular sieves for removing water
- Message-ID: <1992Nov20.070722.1@bb1t.monsanto.com>
- Lines: 29
- Sender: news@tin.monsanto.com (USENET News System)
- Organization: Monsanto Company, St. Louis, MO
- References: <TK.92Nov19172951@entropy.ai.mit.edu>
- Date: Fri, 20 Nov 1992 13:07:22 GMT
-
- In article <TK.92Nov19172951@entropy.ai.mit.edu>, tk@ai.mit.edu (Tom Knight) writes:
- > I've seen several references in the literature to the use of molecular
- > sieves (presumably some sort of zeolite) as a way of temporarily
- > removing water from a closed system. In one case it was to dry a
- > non-aqueous liquid (fluorinert), and in another to trap moisture in a
- > cooled vacuum system.
- >
- > I'd like some commercial sources or articles describing these uses in
- > more detail, if someone is aware of them. Thanks.
- --
- The leading commercial source is W.R.Grace's Davison Chemicals
- division out of Baltimore, Md. For lab scale work all different types
- of mol. sieves are sold by Aldrich.
-
- The best references in this area are a series of articles in J. Org.
- Chem. from about 10 years ago from a university group somewhere in the
- Far East (Malaysia?) where they did a study of drying times and
- efficiencies of various types of molecular sieves and a variety of
- organic solvents using tritiated water. Sorry I can't be more
- specific, but my copies of these articles are on loan to a colleague
- who is out of town. If someone else knows the refs. they can post, or
- I will have it on Monday.
-
-
- --Electric Monk (Bruce Gaede);
- e-mail: bjgaed@ccmail.monsanto.com
-
- "...and then time started seriously to pass."
- --Douglas Adams, _Dirk Gently's Holistic Detective Agency_
-