双键离子液体接枝固载PDVB的特性及其催化油酸甲酯化反应的研究  

The Characteristics of Double Bond Ionicliquids Copolymerizate on PDVB and Synthesis of Methyl Oleate Catalyzed

作　　者：蔡绍雄 张慧[1] 孟松涛 郑德勇[1] 卢泽湘[1] 廖益强 

机构地区：[1]福建农林大学材料工程学院,福州350000

出　　处：《中国粮油学报》2017年第12期70-74,共5页Journal of the Chinese Cereals and Oils Association

基　　金：国家自然科学基金(21506031)

摘　　要：以二乙烯基苯(DVB)为单体,采用沉淀聚合法来合成单分散多孔聚二乙烯基苯微球(PDVB),利用PDVB微球上悬挂双键与带双键的离子液体单体进行接枝共聚反应,制备了PDVB-IL固体酸,用SEM、BET、FT-IR和TG进行表征,并将其用于催化油酸与甲醇进行酯化反应制备油酸甲酯。结果表明:PDVB-IL固体酸的微粒为球形规整,颗粒均匀,比表面积为451.12 m^2/g,耐热性能优异,热分解温度达350℃;将催化剂应用于酯化反应,在反应温度为90℃,醇油比20∶1,催化剂用量为油酸质量的4%,反应5 h,生物柴油的转化率为93.02%。固体酸催化剂具有较高的重复利用性,重复利用5次后,催化效果稳定。Taking divinylbenzene （DVB） as the monomer, porous monodisperse PDVB microspheres was synthesized by precipitation polymerization （PDVB）. The residual double bond on PDVB microsphere surface and the double bond of the ionic liquid were used for copolymerization reaction, and the PDVB - IL solid acid was prepared. The obtained PDVB - IL solid acid was characterized by SEM, BET, FT - IR and TG, and then applied for the preparation of methyl oleate by oleic acid and methanol. The results showed that the PDVB - IL had good spherical morphology, uniform particle size, specific surface area was 451.12 m^2/g, and the PDVB -IL had a good thermal stabil- ity, and its decomposition temperature was up to 350 ℃. The effects of the oleic acid conversion rate had been investigated. Under this condition of that, the reaction temperature 90 ℃, molar ratio of methanol to oil 20：1 （n： n）, catalyst dosage 4% （based on the mass of oleic acid） and reaction time 5 h, the yield of methyl oleate was 93.02%. Solid acid of PDVB - IL could be used for 5 times with high catalytic activity.

关 键 词：聚二乙烯基苯离子液体 PDVB-IL固体酸 酯化反应 油酸甲酯 

分 类 号：TQ646[化学工程—精细化工]