【摘要】 研究了蔗渣在无催化剂和铁系催化剂作用下的液化反应。催化液化所得氢气的产量明显高于无催化液化,且催化液化残渣率有所降低,说明催化剂影响蔗渣的热裂解。在400℃下,催化液化的产油率高于无催化液化的产油率,且前者液态产物的平均相对分子质量(Mw)低于后者液态产物的Mw;而在500℃下,催化液化的产油率没有得到明显提高,但液态产物的Mw都明显增大。实验表明,不同温度下,催化剂对液态产物的Mw及气态产物的产率影响不同。铁系催化剂促进了氢从四氢化萘向蔗渣热解自由基碎片的转移。更多还原

【Abstract】 The liquefaction of bagasse was conducted in tetralin. The liquefaction behaviors in the presence of iron-based catalyst and without any catalyst were compared. The yield of hydrogen from liquefaction was enhanced with iron-based catalyst and the residue content was reduced simultaneously. The results suggest that the catalyst favors the formation of oil. At 400℃, oil yield of liquefaction with iron-based catalyst was higher than that without catalyst, average relative molecular weight (Mw) of liquid product produced with iron-based catalyst was lower than that without catalyst. At 500℃, the use of iron-based catalyst did not significantly enhance oil yield, but increased Mw of the liquid products. The results imply that the catalyst has different influences on Mw of liquid products and gas yield at different temperatures. It also indicates that iron-based catalyst can promote the transformation of hydrogen from tetralin to the degradated fragments.更多还原