| 초록 |
Although lignin is one of promising resources for petroleum-alternative fuels and chemicals, it has very complicated structures composed of several representative linkages, such as alpha-O-4, beta-O-4, 5-5, beta-5, and 4-O-5, which hampers the wide use of lignin in the chemical industry. Benzyl phenyl ether, containing alpha-O-4 linkage, was used as a model compound of lignin and converted to smaller fragments on the acidic catalysts such as alumina, silica, and silica-alumina under H2 at 100-250 oC. Catalytic conversion of benzyl phenyl ether produced aryl compounds of 4-benzyl phenol, 2-benzyl phenol, phenol and toluene, which were analyzed using GC equipped with FID and GC-MS. Additionally, the prepared catalysts were characterized with ICP-AES, N2-physisorption, XPS, NH3-TPD and MAS-NMR (29Si- and 27Al-), which elucidated the relations between catalytic activity and catalyst structure affecting on the conversion of lignin. |
