A study of active sites for partial oxidation on α-Bi2Mo3O12 and β-Bi2Mo2O9 catalysts using crystal structure visualization

The unit cells of α-Bi2Mo3O12, β-Bi2Mo2O9, and γ(H)-Bi2MoO6 are visualized by the crystal structure application. These oxides have twin Mo tetrahedra structures. The visualization clarified that Mo ions of twin Mo tetrahedra and some Bi ions with these Bi–Mo oxides lie on the same plane. It is proposed that the active sites for selective oxidation is linked with these structures exposed on the surface.