Collect. Czech. Chem. Commun. 1992, 57, 2539-2547

Mn-Mo-O Catalysts for Methanol Oxidation. II. Oxidation of Methanol

Krasimir Ivanova, Penka Litchevaa and Dimitar Klissurskib

a Department of Chemistry, Higher Institute of Agriculture, 4000 Plovdiv, Bulgaria
b Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria


The catalytic properties of MnMoO4-based catalysts toward methanol oxidation are investigated. The effect of temperature, flow rate and gas mixture composition on the catalytic activity is established. The highest activity and selectivity (comparable with those of industrial catalysts) of the samples obtained by precipitation in the presence of a small excess of MoO3 was found. The oxidation of methanol on MnMoO4-based catalyst is proposed to be a two-step process. The first step includes methanol interaction with Mo(VI) and reduction of Mo(VI) to Mo(V) (Mo(IV)). The second step consists in direct oxidation of the reduced molybdenum by oxygen from the alcohol-air mixture.