| 초록 |
Biolubricants were produced from esterification and transesterification of soybean oil with various alcohols. Sulfated zirconia catalysts were used for this conversion with high activity, and they could be recycled several times without S leaching. In-situ hydrogenation without H2 gas was observed using alcohol as hydrogen source. These biomass-derived esters showed equivalent or even better viscosity properties compared to commercial lubricants. The effect of catalyst property, reaction temperature, and reaction time on the reaction was estimated. When Pt was deposited on sulfated zirconia (Pt/SZ), Pt/SZ could convert glycerol to 1,3-propanediol much more than 1,2-propanediol. This selective conversion was attributed to Bronsted acidic sites present on Pt/SZ catalysts. |
