| 초록 |
Algae, one of various types of biomass, has been investigated to alleviate a heavy reliance on petroleum-based fuel and chemicals. Alginate, the major component of algae, is composed of two uronic acids, β-D-mannuronic acid and α-L-guluronic acid. In this work, hydrolysis of alginate into two uronic acids was performed over glucose-derived sulfonated carbon catalyst (Glu-SO3H). A partial carbonization of glucose followed by sulfonation of the resultant carbon material imparted the carbon three functional groups of phenolic OH, -COOH and -SO3H. It was found that strong brønsted site (-SO3H) is essential to effectively hydrolyze alginate into two monomers. The catalytic activity of Glu-SO3H for the alginate conversion is higher than that of commercial acid catalysts such as sulfuric acid and commercial solid acid catalysts, despite the small surface area. The high activity can be attributed to high acid density and hydrophilic functional groups of the sulfonated carbon. |
