3.4 Iodine adsorption mechanism
The adsorbents before and after iodine adsorption were measured by
SEM-EDS, XRD to study the iodine adsorption mechanism.
The SEM result and EDS result for shaped silicalite-1 are shown in
Figure 7 and Figure 8 respectively. As the existed of the binder of
aluminum oxide, the shaped silicalite-1 contained aluminum element.
Although iodine did exist on shaped silicalite-1 after adsorption, no
significant change in the morphology of adsorbent was observed.