Using NaY as the raw material, MREY is made through such a series of processes as rare earth treatment, ammonium salt treatment, hydrothermal ultrastabilization and chemical dealumination and silicon reinsertion. It is an active component for producing FCC catalyst with high activity and selectivity; also, it can be adopted in manufacturing hydrocracking catalyst.

Item	Unit	Index
Crystallinity	%	≥60
SAR	SiO2/Al2O3	≥5.0
Unit Cell Size	nm	≤2.60
DTA Peak	℃	≥998
SA,BET	M2/g	≥570
Na2O	wt%	≤1.5
La2O3	wt%	8-12
APS	μm	≤6
TV(500℃, 2h)	w%	≤13