No.46 スギ樹皮の低中温熱分解に及ぼす水蒸気の影響(バイオマス(1))

概要

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Japanese cedar bark was pyrolyzed at 350℃ or 500℃ in N_2 with or without H_2O. Solid residues and tars obtained were respectively analyzed using FT-IR and GC-MS for investigating the effect of H_2O. The effect of adding H_2O was remarkable at 500℃: yields of the solid residue decreased largely. FT-IR analyses of the solid residues showed strong peaks derived from benzene and phenolic ethers in all cases. Tars obtained were almost the primary/secondary tars, which were roughly classified in low molecular oxygenates, guiacol/phenol derivatives and phenanthrene hydro type derivatives. The proportions of both low molecular oxygenates and phenanthrene hydro derivatives among tars obtained in the presence of H_2O were higher compared to those obtained in N_2 alone, which suggested H_2O accelerated the decomposition of the primary tars.
2012-10-15