Mn-Mo-O CATALYSTS FOR METHANOL OXIDATION. II. OXIDATION OF METHANOL

Article abstract of DOI:10.1135/cccc19922539

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.