《Table 3 Effect of methyl palmitate on the decomposition of cellulose, hemicellulose and lignin》

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《Study on Co-refining of Poplar Powder with Soybean Oil in Supercritical Methanol》

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1) Reaction conditions covered a dosage of cellulose，hemicellulose or lignin equating to 10.0 g，a methanol dosage of 80.0 g，a reaction temperature of 320°C，and a reaction time of 1.0 h.2) Reaction conditions covered a dosage of cellulose，hemicellulos

The main components of poplar powder（lignocellulosic biomass）included cellulose，hemicellulose and lignin[10，17].The effect of methyl palmitate（reagent-grade）on the decomposition of these three kinds of compounds was studied in this work，with the results shown in Table 3.It can be seen from Table 3 that when the compounds were directly liquefied in supercritical methanol，the decomposition rate decreased in the following order:hemicellulose>cellulose>>lignin.If methyl palmitate was added to the reaction system，the decomposition rate of these three samples mentioned above all improved.The relative decomposition rate of hemicelluloses，cellulose and lignin was improved by 11.2%，18.9%and 25.0%，respectively.That is obvious to say，for the three kinds of compounds，the more difficult the liquefaction，the greater the magnitude of the decomposition rate increase.It was reported[7]that the most difficult to be liquefied and decomposed was lignin upon being subject to high-pressure liquefaction.But it can be seen from the results of this study that the decomposition rate of lignin was significantly improved in the biomass co-refining，which was favorable to further research on the industrial application of biomass liquefaction.