Preparation of zeolite
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United States of America Patent
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Oct 29, 2002
Grant Date -
N/A
app pub date -
Sep 27, 2000
filing date -
Sep 28, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is provided for preparing zeolite, particularly [Al]-SSZ-31, which comprises the steps of providing a mixture of a zeolite source, an aluminum-containing material, an organic structure directing substance, preferably at least one selected from the group consisting of N,N'-bis-triethyl-1,6-hexanediyl-diammonium dihydroxide, N,N'-bis-triethyl-1,7-heptanediyl-diammonium dihydroxide, N,N'-bis-triethyl-1,8-octanediyl-diammonium dihydroxide, N,N'-bis-triethyl-1,9-nonanediyl-diammonium dihydroxide, N,N'-bis-triethyl-1,10-decanediyl-diammonium dihydroxide, and their salts, and water; drying said mixture to form a powdered dry gel; and contacting and reacting said dry gel with steam at a saturated vapor pressure to produce an aluminum-containing zeolite [Al]-SSZ-31.
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