Table 1.

Chemical content of the samples prepared under different conditions.

Sample	Preparation Condition	Chemical Content (mol/g)	Molar Ratio	Na Exchange Degree (%)
	Ion Exchange Time (h)	Zn	Si/Al
NaY	-	-	2.341	-
Zn(NO3)2-Y	10	0.894	2.346	56.70
ZnSO4-Y	10	0.702	2.384	43.17
Zn(Ac)2-Y	6	0.672	2.342	39.62
	10	0.969	2.386	59.47
	14	1.206	2.391	82.82