C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
252/5
C10G 11/05 (2006.01) B01J 29/08 (2006.01)
Patent
CA 1297089
F-3964(4119) CRACKING CATALYST ITS PREPARATION AND USE . ABSTRACT New catalyst compositions of superior hydrothermal stability, which evidence increased gasoline plus distillate yields, improved coke selectivity and reduced C4- Gas yields, are based on framework dealuminated faujasitic zeolites having a framework silica to alumina molar ratio of from about 5 to 100. In a preferred embodiment, an "ultrastable Y" composited with a matrix is subjected to a treatment with a source of aluminum and rare earth compounds followed by hydrothermal treatments to improve the hydrothermal stability and selectivity of the catalyst for catalytic cracking. This is evidenced by higher gasoline plus distillate yields and lower coke and gas production at lower catalyst usage per barrel of feed relative to commercial cracking catalysts currently being used.
544108
Bundens Robert Glenn
Herbst Joseph Anthony
Kirby Eades Gale Baker
Mobil Oil Corporation
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