In this research, the physicochemical properties two types of H-ZSM-5 catalysts were investigated by NH 3 -TPD, BET, XRD and ICP analysis. In general, the conversion of various oxygenated compounds such as methanol, diketene-acetone (2,2,6-trimethyl-4 H -1,3-dioxin-4-one), methyl acetate, ethyl acetate and acetone was investigated to afford appropriate fuel. The effect of temperature, weight hourly space velocity (WHSV) and acidity of zeolites were investigated to convert methanol to hydrocarbon fuel. Moreover, the influence of ketene as possible intermediate for the reaction of methanol to aromatics was investigated over H-ZSM-5 catalysts using diketene-acetone as ketene precursor under atmospheric pressure at 300 °C. The obtained liquid phase in each experiment was analyzed using GC-Mass technique and the percentage of the conversion, amount of the non-aromatic, aromatic and oxygenate compounds were measured and compared. Also, a sample of Isfahan’s gasoline was analyzed using GC-Mass and the percentage composition of this sample was compared with the found hydrocarbon from methanol conversion. The results showed that the closest percent of hydrocarbons to gasoline was observed in methanol conversion at 370 ° C and the feed rate of WHSV = 3.5 h -1 in the presence of HZ-9 zeolite. The effect of different additive to methanol conversion was studied using product conversion of the mixture diketene-acetone + methanol (50:50), methanol + acetone (60:40). Furthermore, the reactivity of H-ZSM5 catalyst was monitored using product conversion, distribution and selectivity in different time on stream (TOS).
