| 초록 |
Lignin has received a great attention as a renewable biomass feedstock for production of valuable chemicals. Although the selective depolymerization of lignin is significantly difficult problem, various conversion processes have been conducted via physical, chemical or biological approaches. One of the chemical approaches, the catalytic oxidation of lignin is regarded as a promising process in order to obtain valuable phenolic compounds, such as vanillin. In our research, we performed the lignin oxidation at relatively low temperatures (≦ 180 ℃) and pressures (≦ 15 bar) using hydrogen peroxide as an oxidant, instead of pure oxygen gas. Transition metal-based solid catalysts were prepared and they showed significant catalytic performance in the reaction. In addition to the role of the catalysts, the effects of reaction conditions on the conversion of lignin and the yields of phenolic compounds were broadly studied. |
