Catalyst for oxidizing and synthesizing dimethoxymethane by methyl alcohol as well as preparation method and application thereof

The invention discloses a catalyst for oxidizing and synthesizing dimethoxymethane by methyl alcohol. The catalyst for oxidizing and synthesizing dimethoxymethane by methyl alcohol consists of vanadium oxide serving as a main catalytic active component, titanic oxide serving as an auxiliary catalytic active component and auxiliary metallic oxide with the composition in mass percentage: 6-60wt% of V2O5, 40-95wt% of TiO2 and 0-55wt% of auxiliary metallic oxide. The catalyst for oxidizing and synthesizing dimethoxymethane by methyl alcohol, which is provided by the invention, has the advantages of simple method, mild reaction condition, good stability, easiness in reproducibility, and high dimethoxymethane selectivity and methyl alcohol conversion rate.