Modified microsphere FCC catalysts and manufacture thereof
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United States of America Patent
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Sep 24, 1996
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N/A
app pub date -
Mar 31, 1995
filing date -
Mar 31, 1995
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Abstract
An in situ process for making improved zeolitic fluid cracking catalyst by spray drying a mixture of hydrous kaolin, gibbsite and spinel, essentially free from metakaolin, calcining the resulting microspheres to convert the hydrous kaolin to metakaolin whereby the gibbsite is hydrothermally converted to a transitional alumina, and reacting the microspheres composed of a mixture of spinel, transitional alumina and metakaolin with a seeded alkaline sodium silicate solution.
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