| 초록 |
Levulinic acid (LA) as one of the top-12 platform biomass compounds can be hydrogenated to obtain a valuable chemical, 1,4-pentanediol (PDO). So far, studies on the hydrogenation of LA to gamma-valerolactone have been mostly conducted, and studies on the conversion of LA to PDO are scarce. The challenges of the PDO production from LA are low selectivity and harsh reaction conditions. Our previous study revealed that the selectivity to PDO could be increased substantially under mild conditions by using RuRe bimetallic catalysts supported on carbon. Therefore, the effect of carbon support on the activity of the RuRe bimetals was further studied using various carbon supports (AC, VC, CMK-3, CNF) with different surface properties. The catalysts were prepared by the co-impregnation method and thoroughly characterized using TEM, BET, XPS and XRD. We found that VC-supported RuRe catalysts displayed the highest selectivity to PDO. The PDO selectivity was generally correlated with the metal dispersion. The critical roles of surface oxygen functionalities and Ru-Re interfacial sites in PDO selectivity will be discussed. |
