Catalytic cracking with zeolite-containing silica-alumina hydrogel catalyst
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United States of America Patent
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Aug 26, 1980
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N/A
app pub date -
Oct 15, 1976
filing date -
Oct 15, 1976
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Expired
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Abstract
A specially prepared zeolite-containing silica-alumina hydrogel gives a catalyst that is attrition resistant, more active catalytically, more selective and more stable. The hydrogel is prepared by steps including nozzle mixing of reactants to form a hydrogel, ion exchanging with ammonium, aluminum and rare earth ions, washing, drying and impregnating with rare earths.
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