Back to results
US 2019/0099746 A1Published application
Mesoporous fcc catalysts with excellent attrition resistance
AssigneeBASF SE
InventorsMichael Sigman, Charles Keweshan, Mitchell Willis
Life of this patent
Estimating the term…
Abstract
This application discloses a mesoporous catalyst formed by combining a matrix precursor treated with a polyphosphate, and a metallic oxide treated with a cationic electrolyte. The combined treatment with the polyphosphate and cationic polyelectrolyte yields unexpected improvements in attrition resistance, while maintaining high overall pore volume, even as the ratio of meso pore volume to macro pore volume of the formed FCC catalyst increases.
Claims11
1-23. (canceled)
A method for producing mesoporous catalyst particles, the method comprising:
- heating an ammonium polyphosphate-modified kaolin beyond the characteristic exotherm to obtain calcined kaolin;
- preparing an aqueous slurry comprising the calcined kaolin and a cationic polyamine-modified kaolin, wherein a polyamine content of the slurry is from 0.005 wt. % to 0.250 wt. % based on a total weight of kaolin solids present;
- spray drying the aqueous slurry to obtain particles;
- calcining the particles;
- and
- contacting the particles after the calcining with a silicate solution in the presence of a zeolite crystallization initiator to induce zeolite crystallization and produce the mesoporous catalyst particles,
- wherein the mesoporous catalyst particles have an average particle size of from 20 to 200 microns, wherein the mesoporous catalyst particles exhibit a meso/macro ratio defined as the cumulative pore volume for pores having a radius of 30 Å to 100 Å divided by the cumulative pore volume for pores having a radius of 100 Å to 10000 Å, pore volume measured by mercury porosimetry, wherein the meso/macro ratio is from 0.65 to 1.2.
4 more elements
Dependencies are inferred from the claim text.