Light alkene selectivity on Y zeolite FCC catalysts

摘要

n-Hexadecane was used as a test reactant with a pulse technique over various types of commercial FCC catalysts, either equilibrated or steam-dealuminated, to study the changes in the selectivity To light C_4-C_6 alkenes over unit cell sizes ranging from 24.56 A at 475-525 deg C. The Activity depended on the total catalyst acidity, while the unit cell size of the zeolite component Was the factor controlling the relative alkene yields.**