The ZSM-5 type zeolite produced by means of a template agent free hydrothermal crystallization method is featured with high relative crystallinity,wherein the relative crystallinity is no less than 90%,the SiO2/Al2O3 molar ration is no less than 25,and the Na2O is no more than 0.1%.
ZSM-5 Quality Control Targets
Item
|
Unit
|
Max
|
Typical
|
Max
|
Analytical Method
|
Relative crystallinity
|
%
|
90
|
93
|
|
X-ray diffractometer
|
Total specific surface
|
m2/g
|
320
|
360
|
|
N2 Adsorption
|
Microporous specific surface
|
m2/g
|
270
|
280
|
|
N2 Adsorption
|
Silica-alumina ratio
|
/
|
25
|
27.5
|
30
|
XRF
|
Na2O
|
wt%
|
|
0.040
|
0.1
|
Flame Photometric Analysis
|
SO42-
|
wt%
|
|
0.20
|
0.4
|
XRF
|
CI-
|
ppm
|
|
|
70
|
Chemical Analysis
|
LOI
|
wt%
|
|
|
10
|
Gravimetric Analysis
|
D,50
|
μm
|
|
6
|
9
|
Laser Scatter Distribution
|
D,90
|
μm
|
|
9.0
|
15
|
Laser Scatter Distribution
|
>100μm
|
%
|
|
0
|
0.06
|
Laser Scatter Distribution
|
|