Aluminosilicates
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United States of America Patent
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Jun 30, 1998
Grant Date -
N/A
app pub date -
Dec 19, 1996
filing date -
Feb 4, 1994
priority date (Note) -
Expired
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Abstract
Process for manufacturing an alkali metal aluminosilicate of zeolite wherein zeolite P seeds are produced in situ in a first reacting gel with a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of above 2.2 and it is only after the formation of zeolite P seeds, but before said seeds have the time to fully grow, that sodium aluminate is added in order to get a gel which can have a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of about 2 which therefore enables producing a zeolite P having also a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of about 2.
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