Carbon Capture Lab, Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, Tamilnadu, 603110, India.
Environ Sci Pollut Res Int. 2021 Dec;28(45):63599-63613. doi: 10.1007/s11356-020-11174-4. Epub 2020 Oct 20.
The physical properties such as density, dynamic viscosity, and surface tension of aqueous tetrabutylammonium-based ionic liquids were measured experimentally by varying temperature (283.4 to 333.4 K) and concentration of ILs (10-50 wt%) at an interval of 10 K and 10 wt% respectively. In this study, the aqueous tetrabutylammonium-based ionic liquids namely tetrabutylammonium acetate [TBA][OAC], tetrabutylammonium bromide [TBA][Br], and tetrabutylammonium hydroxide [TBA][OH] was used to investigate the influence of temperature and concentration of ILs on the physical properties data was examined. It is observed that both density and surface tension increase with increasing concentration of [TBA][Br], whereas the opposite trend is observed for [TBA][OAC] and [TBA][OH] respectively. This is due to stronger molecular interaction between [TBA][Br] and water compared to other ILs. The dynamic viscosity of all aqueous ILs increases with increasing IL concentration. The measured physical properties of ILs decrease as temperature increases. Furthermore, the experimental data is correlated and compared with that of the calculated model; the agreement was satisfactory. Graphical abstract.
实验测量了水基四丁基铵基离子液体的密度、动态粘度和表面张力等物理性质，温度范围为 283.4 至 333.4 K，离子液体浓度范围为 10-50 wt%，间隔为 10 K 和 10 wt%。在这项研究中，使用了水基四丁基铵基离子液体，即四丁基乙酸铵[TBA][OAC]、四丁基溴化铵[TBA][Br]和四丁基氢氧化铵[TBA][OH]，以研究温度和离子液体浓度对物理性质数据的影响。结果表明，[TBA][Br]的浓度增加会导致密度和表面张力增加，而[TBA][OAC]和[TBA][OH]则相反。这是由于[TBA][Br]与水之间的分子相互作用比其他离子液体更强。所有水基 IL 的动态粘度均随 IL 浓度的增加而增加。实验测量的 IL 物理性质随温度升高而降低。此外，还对实验数据进行了关联和比较与计算模型；结果令人满意。
