Using NaY as the raw material, REUSY 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 not only the main active component of catalytic cracking catalysts, but can also be employed in hydrocracking catalyst.

Item	Unit	Index
Crystallinity	%	≥60
SAR	SiO2/Al2O3	≥5.0
Unit Cell Size	nm	≤2.453
DTA Peak	℃	≥998
SA,BET	m2/g	≥570
Na2O	wt%	≤1.5
La2O3	wt%	1.5-6.5
APS	μm	≤6
TV(500℃, 2h)	w%	≤13