FCC catalyst, its preparation and use
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United States of America Patent
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May 9, 2017
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N/A
app pub date -
Dec 20, 2005
filing date -
Dec 21, 2004
priority date (Note) -
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Abstract
A process for preparing a catalyst is disclosed. The process generally comprises the steps of: (a) preparing a slurry comprising clay, zeolite, a sodium-free silica source, quasi-crystalline boehmite, and micro-crystalline boehmite, provided that the slurry does not comprise peptized quasi-crystalline boehmite; (b) adding a monovalent acid to the slurry; (c) adjusting the pH of the slurry to a value above about 3, and (d) shaping the slurry to form particles. This process results in attrition resistant catalysts with a good accessibility.
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