Synthesis and Characterization of LTA Zeolite from Kaolin Bangka
Arif Rahman1, Agung Purwanto1, Kusrini2, Eko Adi Prasetyanto3

1 Universitas Negeri Jakarta
2 Universitas Indonesia
3 Unika Atmajaya Jakarta

Abstract

The synthesis of LTA zeolite from kaolin Bangka using hydrothermal method at low temperatures has been reported. Kaolin was converted into metakaolin by calcinaton process at a temperature of 750 °C for 2 hours then hydrothermal subsequently process at 60 ° C for 5 hours in a NaOH 3M solution. Characterization by using XRD provides information on changes from the crystalline to amorphous phase in the conversion of kaolin to metakaolin to complete and the formation of LTA zeolite after hydrothermal. SEM provides information on morphological changes that are typical for Kaolin, metakaolin and zeolite LTA. Changes in functional groups were also observed in the samples observed using FTIR spectroscopy. From these characterizations, it can be concluded that successfully synthesized LTA zeolite from Kaolin Bangka with high crystallinity using a simple method.

Keywords: Zeolite LTA, Kaolin, metakaolin

Topic: Chemistry