唐韶坤^1,2,3, 孙丽伟^1,2,3, 李书奕¹
AuthorsHTML:唐韶坤^1,2,3, 孙丽伟^1,2,3, 李书奕¹
AuthorsListE:Tang Shaokun^1,2,3, Sun Liwei^1,2,3, Li Shuyi¹
AuthorsHTMLE:Tang Shaokun^1,2,3, Sun Liwei^1,2,3, Li Shuyi¹
Unit:1. 天津大学化工学院，天津 300350；2. 绿色合成与转化教育部重点实验室(天津大学)，天津 300350；3. 天津化学化工协同创新中心，天津 300350
Unit_EngLish:1．School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
2．Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin 300350, China
3．Collaborative Innovation Center of Chemic
Abstract_Chinese:针对离子液体高黏度、低传质速率的限制, 设计合成功能化离子液体-介孔氧化铝复合材料. 采用超声浸渍法实现离子液体在介孔氧化铝上的负载, 研究了分散溶剂种类、离子液体用量、超声时间等对离子液体负载量的影响, 并通过透射电子显微镜、扫描电子显微镜、傅里叶变换红外光谱仪和热重分析仪等对功能化离子液体-介孔氧化铝复合材料的微观形貌、结构和热稳定性进行研究. 结果表明：功能化离子液体成功负载在介孔氧化铝中, 最适宜的负载条件为以丙酮为分散溶剂、离子液体与介孔氧化铝的质量比为4∶3、超声时间为60 min, 离子液体在介孔氧化铝中的负载量达到1.04 gIL/gMA, 氧化铝的有序介孔结构在复合材料中保持完好, 复合材料的热稳定性较功能化离子液体显著提高.
Abstract_English:In view of the high viscosity and the low mass transfer rate of ionic liquids(ILs)，functionalized ionic liquid(IL)-mesoporous alumina(MA)composite materials were designed and synthesized. The ionic liquid was immobilized on mesoporous alumina by ultrasonic impregnation method. The effects of the type of the dispersion solvent，the amount of the ionic liquid and ultrasonic time were respectively investigated. Transmission electron microscopy，scanning electron microscopy，Fourier transform infrared spectrometer and thermal gravimetric analyzer were used to characterize the morphology，structure and thermostability of functionalized IL-MA composite materials. The results show that the functionalized ionic liquid is successfully supported on the mesoporous alumina and the ionic liquid loading capacity on MA can reach 1.04 gIL/gMA under the optimal conditions of using acetone as the dispersion solvent，the mass ratio of ionic liquid to mesoporous alumina being 4∶3 and the ultrasonic time being 60 min. For the composite materials，the ordered mesostructure of alumina is well kept and its thermal stability is greatly enhanced compared with pure functionalized ionic liquid.
Keyword_Chinese:离子液体; 介孔氧化铝; 固定化; 超声; 浸渍
Keywords_English:ionic liquid; mesoporous alumina; immobilization; ultrasonic; impregnation

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