新型Br_nsted-Lewis双酸型离子液体的合成及其酸性质研究.doc

文档介绍：
新型 Brønsted–Lewis 双酸型离子液体的合
成及其酸性质研究#
刘仕伟,李可盛,李露,于世涛,解从霞**
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(青岛科技大学化工学院,青岛 266042)
摘要:设计合成了新型 Brønsted–Lewis 双酸型离子液体,并采用 FT–IR、1H NMR、13C NMR
和 EI–MS 表征对其结构进行了表征,结果表明所合成的化合物真是目标离子液体。研究了
Brønsted–Lewis 双酸型离子液体的酸性质,结果表明所合成的离子液体具有 Brønsted 和
Lewis 双重酸型。离子液体的阳离子含有共价键连接的 Brønsted 酸性基团,而阴离子构成离
子液体的 Lewis 酸性,且其酸强度随着合成过程中所引用的 Lewis 酸性化合物的用量的增加
而增强。
关键词:离子液体;合成;表征
中图分类号:O643
Study on Synthesis of Brønsted–Lewis Acidic Ionic Liquid
and Its Acid Property
Liu Shiwei, Li Kesheng, Li Lu, Yu Shitao, Xie Congxia
(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao
266042)
Abstract: Novel Brønsted–Lewis acidic ionic liquid was synthesized and characterized by FT–IR, 1H
NMR, 13C NMR and EI–MS. The results indicated that the pounds were just the target
products with the relevant acidity. Brønsted–Lewis acidic ILs were both Brønsted and Lewis acidic.
The cations contributed to the Brønsted acidity, and the anions determined the Lewis acidity. The
acidity of Brønsted acidic functional es from the alkyl sulfonic acid which is covalently
tethered in ILs cations. The acidity of Leiws acidic functional ILs can be adjusted in a wide range
depending on the proportion anic base to Lewis acid, and it is raised by increasing amount of
Lewis acids.
Key words: Ionic liquid; Synthesis; Characterization
0 引言
离子液体是指在室温或接近