Process for the preparation of zeolitic catalysts
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United States of America Patent
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May 11, 2004
Grant Date -
Jun 7, 2001
app pub date -
Nov 29, 2000
filing date -
Dec 3, 1999
priority date (Note) -
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Abstract
The present invention relates to a process for the preparation of zeolitic catalysts comprising zeolite and oligomeric silica, which can be used in industrial reactors. The process consists in directly mixing the suspension, resulting from the synthesis of the zeolite, with an oligomeric silica sol, obtained from the hydrolysis of a tetra-alkyl ortho silicate in the presence of tetra-alkylammonium hydroxide, and in subjecting the mixture to rapid drying, by feeding to a spray-dry.
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