A new way to tune relative humidity: by saturated ionic liquid aqueous solutions

被引：11

作者：

Cao, Yuanyuan ^{[1
]}

Chen, Yu ^{[1
]}

Mu, Tiancheng ^{[1
]}

机构：

[1] Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China

来源：

NEW JOURNAL OF CHEMISTRY | 2013年 / 37卷 / 12期

基金：

中国国家自然科学基金;

关键词：

WATER SORPTION; SALT-SOLUTIONS; HYDROXYL; SOLUBILITY; CATALYST; POLARITY; KINETICS; GREEN; CO2;

D O I：

10.1039/c3nj00661a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, a new way to control the relative humidity (RH) by hydrophobic ionic liquids (ILs) was proposed. The influences of cation type, anion type, alkyl chain length, substitution of the cation ring, functionalization, and combinations of ILs on the RH were investigated. The results showed that cation ring, functionalization and temperature had a significant influence on the RH of saturated IL aqueous solutions, while the influence of alkyl chain length was negligible. Then, a repulsion-induced mechanism was proposed to qualitatively explain the RH of saturated IL aqueous solutions. Simply speaking, ILs with high hydrophilicity induce water molecules from the air, thus resulting in a low RH, and vice versa.

引用

页码：3890 / 3898

页数：9

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