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METHANOL is a chemical manufactured world-wide and its production is of interest from bothindustrial and academic points of view. It is used as gasoline extenders and in the manufac-ture of methyl tetra-butyl ether which is used as an octane enhancer in gasoline. The search forpotential additives has been carried out since the discovery of the promoting effect. In thisnote, we report the promoting effect of Mn on Cu-Zn-Al catalyst. The results indicated that