分子的蒸馏被用来在同类的纤维素 acetylation 恢复离子的液体(IL ) 1-allyl-3-methylimidazolium 氯化物(AmimCl ) 。也就是,影响分子的蒸馏的分离效率的五个因素喂流动率,蒸馏温度,喂温度,擦拭器旋转速度,和蒸馏压力,被讨论。最佳的恢复条件用一个 OA9 (34 ) 图案经由直角的实验被决定。IL 在最佳的条件下面在同类的纤维素 acetylation 系统被再循环并且再使用 5 次。第 5 预定的再循环的 IL 的纯净到达了 99.56% 。英尺红外(Fourier 变换红外线的光谱学) 并且光谱学显示出的 1H NMR (原子磁性的回声) 恢复 IL 的结构是,这没变化。这个工作证明 AmimCl 有优秀可重用性,并且那分子的蒸馏是为在同类的纤维素 acetylation 恢复 IL 的一个有效方法。
Molecular distillation was used to recover ionic liquid(IL) 1-allyl-3-methylimidazolium chloride(AmimCl) in homogeneous cellulose acetylation.The five factors that affect the separation efficiency of molecular distillation,namely,feed flow rate,distillation temperature,feed temperature,wiper rotating speed,and distillation pressure,are discussed.The optimal recovery condition was determined via orthogonal experiments using an OA9(34) design.The IL was recycled and reused 5 times in the homogeneous cellulose acetylation system under optimal conditions.The purity of recycled IL the 5th time reached 99.56%.FT-IR(Fourier transform infrared spectroscopy) and 1H NMR(nuclear magnetic resonance) spectroscopy showed that the structure of the recovered IL is not changed.This work proves that AmimCl has excellent reusability,and that molecular distillation is an effective method for recovering IL in homogeneous cellulose acetylation.