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Öğe Direct and catalytic liquefaction of wood species in aqueous solution(TAYLOR & FRANCIS INC, 2005) Demirbas, A; Balat, M; Bozbas, KDirect and catalytic liquefaction of wood kinds picea orientalis, quersus pedunculate and fagus orientalis were carried out in an autoclave in the reaction temperature range of 550-650 K in the aqueous medium. NaOH was used as catalyst in the catalytic liquefaction runs. The maximum liquid yields obtained from direct and catalytic runs were 49% and 82% for the picea orientalis wood at 650 K, respectively. It is clear that the yield of liquid products increase with increasing liquefaction temperature for each wood sample. hi general, composition of liquefaction products depends on structural composition of the sample. The yield of acetone insoluble fraction decreases with increasing liquefaction temperature for all of runs.
