METHOD OF PRODUCING FCC CATALYSTS WITH REDUCED ATTRITION RATES

摘要

FCC catalysts having improved attrition resistance are provided by mixing a cationic polyelectrolyte with either zeolite crystals or a zeolite-forming nutrient and/or a matrix material, prior to or during formation of a catalyst microsphere.

主权项

1. An FCC zeolite-containing catalyst microsphere comprising zeolite, said microsphere formed from at least one of a zeolite-forming nutrient or zeolite crystals and a matrix, at least one of said zeolite crystals, said zeolite-forming nutrient or said matrix being mixed with 0.005 to 0.5 wt. % of a cationic polyelectrolyte relative to the weight of said zeolite crystals or zeolite-forming nutrient and said matrix, prior to or during formation of said microsphere.