磁性固体酸SO_4^(2-)/ZrO_2/Cr_2O_3/Fe_3O_4催化纤维素液化反应的研究  

Study on liquefaction of cellulose by magnetic solid acid SO_4^(2-)/ZrO_2/Cr_2O_3/Fe_3O_4

作　　者：吕萌[1,2] 王海军[1,2] 李炜[1,2] 王飞飞[1,2] 郝月月 宋燕钦 

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]江南大学食品胶体与生物技术教育部重点实验室,江苏无锡214122

出　　处：《应用化工》2016年第5期837-843,共7页Applied Chemical Industry

基　　金：江苏省自然科学基金资助(BK2012118)

摘　　要：采用化学共沉淀法合成了磁性固体酸催化剂SO_4^(2-)/Zr O_2/Cr_2O_3/Fe_3O_4,用于催化水体系中纤维素的液化反应,探讨了反应温度、时间以及催化剂用量对纤维素液化反应的影响。研究表明,在240℃下反应8 h,纤维素的转化率达到99%以上,油产率为16.6%,水溶性物质产率达到35.9%。GC-MS分析表明,油相产物的主要成分为醛、酮以及羧酸类物质。A kind of magnetic solid acid catalyst SO_4^（2-）/Zr O_2/Cr_2O_3/Fe_3O_4 was prepared by chemical coprecipitation method. The catalyst was applied in liquefaction of cellulose,and the effect of temperature,time,as well as mass of catalyst on liquefaction of cellulose was studied. The optimum reaction condition was under the temperature of 240 ℃ for 8 h. The cellulose conversion rate was above 99%,the oil yield was 16. 6%,and water soluble substance yield reached 35. 9%. The oil chemical composition was identified by GC-MS,in which acid,ketone and aldehyde were the dominate.

关 键 词：化学共沉淀 磁性固体酸 纤维素液化 

分 类 号：TQ352.79[化学工程] TQ352.2