Palm fly ash is waste in the palm oil industry. Palm fly ash has high content of silica. ZSM-5 is one of synthetic zeolite which used as catalyst. It can be synthesized from silica and alumina using hidrothermal method. Source of silica that can be used to ZSM-% synthesis are sodium silicate, gelled silica and precipitated silica. the purpose of this research are to identify the effect of react…