咪唑类功能化离子液体合成工艺的研究

本文研究了1-烯丙基-3-乙烯基咪唑氯盐(AVIM)Cl功能化离子液体的合成工艺。采用两步合成法,由N-烯丙基咪唑与1,2-二氯乙烷,三乙胺通过两步季铵化反应制得,通过对合成条件进行实验分析。结果表明:N-烯丙基咪唑和1,2-二氯乙烷按摩尔比1︰1.2混合,60℃下反应30h;1-烯丙基-3-(2-氯代乙基)氯化咪唑嗡与胺类物质按摩尔比1∶1.5混合,50℃下反应20h为最佳合成条件。采用IR、~1H NMR、^(13)CNMR对产物进行表征,结果表明所合成的产物确为目标离子液体。

Biorefinery of bacterial cellulose from rice straw:enhanced enzymatic saccharification by ionic liquid pretreatment

The pretreatment of rice straw is often used to enhance the hydrolysis. 1-allyl-3-methylimidazolium chloride （ [ AMIM ] C1） is a kind of low viscous, nontoxic and recyclable ionic liquid. It was used to treat rice straw and improve the enzymatic hydrolysis of rice straw in this study. The factors influencing the pretreatment were as follows： the dosage of rice straw in [ AMIM ] Cl, crush mesh of rice straw, pretreatment temperature and time. After the pretreatment with a 3 % （the weight ratio of rice straw to ionic liquid） rice straw dosage in [AMIM]Cl at 110 ℃ for 1 h, the yield of reducing sugar of regenerated rice straw by 33 U/mL cellulase hydrolysis was 53.3 %, which was two times higher than that of un-treated rice straw （23.7 % ）. More researches regarding straw biorefinery to bacterial cellulose are being performed in the lab and prospective results will be published in near future.

离子液体杂化膜材料的制备及其深度脱硫的应用研究

建立一种通过聚合离子液体膜材料进行燃油深度脱硫的方法。本文采用1-烯丙基-3-乙烯基咪唑氯盐(AVIM)Cl为单体,以偶氮二异丁腈(AIBN)为引发剂,以N,N-二甲基甲酰胺(DMF)为溶剂,进行(AVIM)Cl单体自由基均聚反应,合成PILs固体膜材料,研究了引发剂用量对膜结构及燃油脱硫性能的影响。结果表明:聚合温度在60℃下,引发剂用量在5‰时,脱硫效果最佳,模拟燃油中硫含量从800ppm降低到438ppm,一次脱除率达到45.2%。