文献类型：期刊文章

作　　者：王艳涛[1,2] 李坤兰[1] 魏立纲[1] 马英冲[1]

机构地区：[1]大连工业大学轻工与化学工程学院,大连116034 [2]贡比涅技术大学可再生资源综合利用实验室,贡比涅60200

出　　处：《Chinese Journal of Chemical Physics》

基　　金：This work was supported by the National Natural Science Foundation of China （No.21106011 and No.21276034） and the Program of Science and Technology of Liaoning Province （No.201602058）, and China Scholarship Council.

年　　份：2017

卷　　号：30

期　　号：5

起止页码：521-528

语　　种：中文

收录情况：0、AJ、CAS、CSCD、CSCD2017_2018、INSPEC、JST、RSC、SCIE、SCOPUS、ZGKJHX、普通刊

摘　　要：Molecular interactions of the ternary mixtures of 1-butyl-3-methylimidazolium chloride （[C4C1im]Cl）-water-2,6-dimethoxyphenol （2,6-DMP, a phenolic monomer lignin model compound） were investigated in comparison with the [C4C1im]Cl-water binary systems through attenuated total reflection infrared spectroscopy. Results indicated that the microstructures of water and [C4C1im]Cl changed with varying mole fraction of [C4C1im]Cl （xIL） from 0.01 to 1.0. This change was mainly attributed to the interactions of [C4C1im]Cl-water and the self-aggregation of [C4C1im]Cl through hydrogen bonding. The band shifts of C-H on imidazolium ring and the functional groups in 2,6-DMP indicated that the occurrence of intermolecular interactions by different mechanisms （i.e., hydrogen bonding or π-π stacking） resulted in 2,6-DMP dissolution. In the case of xIL=0.12, the slightly hydrogen-bonded water was fully destroyed and [C4C1im]Cl existed in the form of hydrated ion pairs. Interestingly, the maximum 2,6-DMP solubility （238.5 g/100 g） was achieved in this case. The interactions and microstructures of [C4C1im]Cl-water mixtures influenced the dissolution behavior of 2,6-DMP.

关 键 词：Lignin model compound Ionic liquid-water Molecular interactions  

分 类 号：O]