| 초록 |
Levulinic acid (LA) derived from lignocellulosic biomass via hydrolysis, can be converted into invaluable 1,4-pentanediol (PDO) through hydrogenation. To date, various catalysts have been known to convert LA to PDO, but their activity and selectivity are low for industrial application. In this study, rhenium-based bimetallic catalysts were studied for the hydrogenation of LA to PDO. Highly oxophilic rhenium was used as a promoter as it was known to activate the carbonyl groups of acid effectively. Specifically, we screened the various metals (Ru, Ir, Cu), oxide supports (SiO2, TiO2, Al2O3) and carbon supports (AC, CMK-3, Vulcan) using the common promoter of Re. We found that the selectivity to PDO is highest for Ru and CMK-3 support. Using RuRe/CMK-3, the effect of the ratio of Ru and Re (Ru : Re = 1 : 0.25, 1 : 0.5, 1 : 0.75, 1 : 1) were studied. Various characterization studies (XRD, TEM, XPS) were employed to reveal the role of carbon support and the interaction between Ru and Re. |
