| 초록 |
Lignocellulosic biomass is one of the most rational carbon supplies for producing valuable chemicals and fuels. Levulinic acid (LA) has appeared as one of the most promising renewable platform molecules. Several derivatives of LA have been investigated as cellulosic fuels or fuel additives; these include γ-valerolactone, 2-methyltetrahydrofuron, and valeric acid (VA) and its esters. VA has been considered as an excellent alternative biofuel candidate for conventional liquid transportation fuels and commodity chemicals. Herein, we developed a Nb promoted Cu/Zr-porous silica (Nb-Cu/ZPS) catalyst, which was found to be highly selective toward hydrodeoxygenation (HDO) of ketonic (＞C=O) group in the LA to VA with a maximum yield of ＞95% under mild conditions (150 ⁰C, 3 MPa H2 and 2h) in an aqueous medium. The HDO performance of Nb-Cu/ZPS catalyst is found extraordinarily high as compared to previous reports on noble or non-noble metal-based catalyst. |
