SUMMARY Kaolin as natural minerals contains silica and alumina therefore it is potential as basic material for synthesizing process of ZSM-5. This study aimed to carry out synthesizing zeolite from kaolin with addition PEG template by setting hydrothermal times from 12 until 48 hours at a hydrothermal temperature of 140 °C. ZSM-5 was synthesized in molar composition 1SiO2: 0.0067Al2O3 : 0.88 …