蔗渣液化中铁系催化剂作用的研究  

FUNCTION OF IRON-BASED CATALYST IN THE LIQUEFACTION OF BAGASSE

作　　者：郭贵全[1] 魏文[1] 王红娟[1] 谌凡更[1] 

机构地区：[1]中国科学院广州化学研究所纤维素化学重点实验室,广东广州510650

出　　处：《林产化学与工业》2005年第3期47-50,共4页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(20274054);华南理工大学制浆造纸国家重点实验室基金资助课题(无编号)

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。The liquefaction of bagasse was conducted in tetralin. The liquefaction behaviors in the presence of ironbased 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 （Mw） 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 Mw of the liquid products. The results imply that the catalyst has different influences on Mw 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.

关 键 词：蔗渣 液化 铁系催化剂 供氢溶剂 

分 类 号：TQ91[化学工程] TQ351.2