Fcc catalyst with enhanced mesoporosity, its preparation and use
OwnerAmir Sabahi, Eswaramoorthi Iyyamperumal +4inventors
InventorsAmir Sabahi, Eswaramoorthi Iyyamperumal, Nataly G. Vargas, William Knowles, Andrew Loebl, Julie Francis
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Abstract
Process for the preparation of a catalyst by adding, clay, boehmite, a first silica to form a slurry, digesting the slurry with a monoprotic acid to a pH of less than 4, adding one or more zeolites, adding a rare earth component to the slurry and mixing, adjusting the slurry pH to below 4 with monoprotic acid, adding a second silica anywhere in the preceding steps, destabilizing the slurry by raising the pH, shaping and collecting the resulting catalyst, wherein the resulting catalyst has enhanced mesoporosity.
Claims8
A process for the manufacturing of a catalyst composition comprising the steps of:
- a. Adding, clay, boehmite, a first silica to form a slurry;
- b. Digesting the slurry with a monoprotic acid to a pH of less than 4;
- c. Adding one or more zeolites from the group of ultra stabilized high SiO2/Al2O3 Y zeolite, rare earth exchanged USY, rare earth exchanged Y zeolites, zeolites with pentasil and beta structures to the slurry and mixtures thereof;
- d. Adding a rare earth component to the slurry either after step (a) or after step (c) and mixing;
- e. Adjust the slurry pH to below 4 with monoprotic acid;
- f. Adding a second silica anywhere in the above steps a-e;
- g. Destabilizing the slurry by raising the pH to above 4.0;
- h. Shaping and collecting the resulting catalyst.
- i. Optionally followed by a calcination and post washing step to remove excess sodium as necessary.
Dependencies are inferred from the claim text.