2015 : Effect of silica to alumina molar ratio on crystallinity of mordenite synthesized using rice husk ash and kaolin from Bangka Belitung

Dra. Ratna Ediati MS., Ph.D


Abstract

Mordenite is a type of microporous zeolite with orthorhombic crystal structure, and have open channels that allow water and large ions pass through the channels. In this study, mordenite have been successfully synthesized using kaolin and rice husk ash as Al and Si source, respectively. Two parameters affecting hydrothermal synthesis of mordenite zeolite were investigated, including silica to alumina ratio (10, 20, and 30) and synthesis time (24, 36, 48, 60, and 72 hours). The produced samples were investigated using XRD, FT-IR, and SEM. The results show that silica to alumina ratio has a higher impact on crystallinity of mordenite. Synthesis time was also affected the crystallinity of mordenite. Crystallinity of mordenite increased with the increase in synthesis time. High crystallinity mordenite was formed from a dense synthesis gel with a Si/Al molar ratio of 30 with synthesis time of 72 hour