Zhou Jian-wei, Zhao Mei-ting, Li Zhen**, Chen Jing, Xia Chun-gu

(Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, LanZhou, 730000)

Abstract: A series of sulfonic acid functionalized ionic liquids based on guanidinium and isobutylammonium have been synthesized. Important physicochemical properties for these ionic liquids are characterized by DSC, STA, UV-Vis and viscosimeter to determine how acidity, density, viscosity, solubility, glass transition temperature, and thermal stability are affected by changes in cation structure and the type of anion. It is found that the structures of anions and cations have dramatic or weak effect on the properties.

Key words: ionic liquids; physicochemical properties; sulfonic acid functionalized

E-mail: zhenli@licp.cas.cn

Journal of Molecular Catalysis, Vol. 25, Issue 2, 2011, 157~165