Abstract
A correlation between total acidity, as measured by ammonia temperature-program-med desorption, and hydrocarbon production from methanol amorphous silica-alumina has been observed. Samples with different total acidity values and acid strength distributions were obtained by several treatments on silica-alumina. Total hydro-carbon production increases with acidity up to a certain acidity value. Further increase in acidity does not result in an increase in hydrocarbon formation. Since a similar type of correlation was also observed using several different zeolites, it seems that the transformation of methanol into hydrocarbons on amorphous or zeolitic catalysts is very similar in both cases.
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