Dimethyl ether is classified as an alternative material that can be renewed and used for diesel engines, diesel fuel, and gas stoves as a household fuel. Dimethyl ether production was carried out by dehydration of methanol. The catalyst used in this process was dealuminated zeolite Y. This study aims to determine the effect of temperature on conversion, reaction rate constants, activation energy, and collision factor (A) in the synthesis of dimethyl ether. The reaction was carried out in a fixed bed catalytic reactor where the temperature was varied at 225-325 oC. The gas product was analysed by Gas Chromatography-Mass Spectrometry (GCMS), while the liquid product was analysed by High-Performance Liquid Chromatography (HPLC). The calculation of reaction kinetics was carried out using MATLAB. The results showed that the highest conversion was obtained at a reaction temperature of 225 oC which was 75.58 %. The reaction rate constant was obtained at 0.1795 l/mol.h with the activation energy and the collision factor values are 1.044 x 103 cal/mol and 0.0589, respectively.