| 초록 |
The hydrogenation of model lignin compound (anisole) was performed over Ru catalysts using a batch reactor at 10 bar H2 pressure and 200 °C. Various mesoporous transition metal oxides including TiO2, Fe3O4, and Co3O4 were prepared by hydrothermal synthesis methods and then used as the support of Ru catalysts. The textural properties of the catalysts were characterized by X-ray diffraction, N2 adsorption-desorption, and CO chemisorption. Ru particle sizes, conversion of anisole, and yield of benzene changed drastically depending on the kind of support indicating the significant influence of the active metallic species-mesoporous support interaction. Among three catalysts, the Ru/meso-TiO2 catalyst showed strongest interation between Ru particle and support resulted in highest anisole conversion and largest amount of benzene produced. Results demonstrate that mesoporous TiO2 support enhanced catalytic activity and directed the reaction pathway toward direct deoxygenation. |
