ANALISIS PENGARUH AKTIVASI KIMIA DAN FISIKA LEMPUNG MAREDAN TERHADAP RASIO Si/Al PADA SINTESIS ZEOLIT

Abstract

Maredan natural clay in recent years has been widely used as raw material for zeolite synthesis, but the results obtained are not good enough because there are still mineral impurities such as Fe. One of method to remove these impurities is through chemical and physical activation of Maredan clay. In this study, Maredan natural clay was leached with 1 M H2SO4 at a temperature of 80oC for 3 hours and then calcined for 3 hours at a temperature of 650 oC. Post activation clay was converted into zeolite using reflux method. The results of XRF analysis proved that there was a decrease in Fe content from 8.530% to 7.710%, while silica and alumina levels from Maredan clay increased after the activation process. The results of the synthesis obtained a type of zeolite with low Si content with a Si/Al ratio of 1.577.