Study on adsorption properties of highly siliceous mordenite (high Si/Al ratio) by combination of steaming and acid treatment

Abstract

The dealumination of mordenite using steaming at different temperatures has been studied. The resulted samples were characterized by XRD, SEM, IR and adsorption techniques. Under steaming conditions, the mordernite was progressed with an extensive dealumination, however there is no signifcant loss of crystallinity as determined by XRD. It is found that a relatively short duration of steaming (i.e. 2 h) at 700°C can lead effectively to the dealumination of mordenite and the dealuminated mordenites have enhanced adsorbability for volatile organic compounds