Volumetric and viscometric investigation of aqueous solution of [Bmim][BF4] from 288.15 to 318.15 K
Volumetric and viscometric investigation of aqueous solution of [Bmim][BF4] from 288.15 to 318.15 K
复制标题
[Bmim][BF4] 水溶液在 288.15 至 318.15 K 范围内的体积和粘度研究
DOI：
10.1016/j.molliq.2019.01.057
复制
发表时间：
2019-03
影响因子：
6
通讯作者：
Tong Jing
中科院分区：
文献类型：
--
作者：
Xu Wei-Guo;Qi Wen-Shuang;Zhang Zhi-Heng;Tong Jing
在288.15 ~ 318.15K的温度范围内，以5 K为步长，在常压下测量了[Bmim][BF_4]水溶液的密度和粘度。所有水溶液的浓度均控制在1.000 mol·kg-1以下。获得了不同温度和相应浓度下的表观摩尔体积值。根据Redlich-Mayer方程，得到了经验参数SV和BV，以及无限稀释时的极限表观摩尔体积ε Vi 0。用Pitzer方程研究了它们的体积性质，结果表明Redlich-Mayer方程和Pitzer方程是相互验证的。根据ε V10和T方程，计算并讨论了极限表观摩尔膨胀率E ε ∞。通过Jones-Dole经验方程，得到了[Bmim][BF_4]水溶液的粘度系数A和B。此外，还得到了溶质的标准摩尔活化吉布斯自由能Δμ2 <$0，并通过Δμ2 <$0对T的拟合，计算出溶质的活化熵Δ S 2 <$0和活化焓Δ H 2 <$0。用半经验方法预测了[Bmim][BF_4]水溶液的粘度，结果与实验值吻合较好。
Density and viscosity of aqueous [Bmim][BF4] were measured at the temperature range from 288.15 to 318.15 K with a step of 5 K under atmospheric pressure. All the concentrations of the aqueous solutions were controlled bellow 1.000 mol·kg−1. The values of apparent molar volumes were obtained at different temperatures with the corresponding concentrations. According to Redlich-Mayer equation, the empirical parameters (SVandBV) and the limiting apparent molar volume at infinite dilution,ϕVi0, were acquired. The volume properties were also investigated using Pitzer's equation the result showed that Redlich-Mayer's and Pitzer's equation were mutually proved. Based on the equation ofϕVi0andT, the limiting apparent molar expansibilities,Eϕ∞, were calculated and discussed. Through the Jones-Dole empirical equation, the viscosity coefficientAandBof aqueous [Bmim][BF4] were obtained. In addition, the standard molar activation Gibbs free energy of solute, Δμ2≠0, were obtained, and the activation entropy, ΔS2≠0, as well as activation enthalpy, ΔH2≠0, can be calculated by fitting Δμ2≠0againstT. Using a semi-empirical method the viscosity of aqueous [Bmim][BF4] was predicted and the result showed a good agreement with experimental values.
登录
查看更多内容
DOI：
10.1016/j.jct.2016.06.022
发表时间：
2016-10
期刊：
The Journal of Chemical Thermodynamics
影响因子：
--
作者：
J. Tong;Duo Zhang;Kun Li;Xia Chen;Lu Liu;Ye Qu
通讯作者：
J. Tong;Duo Zhang;Kun Li;Xia Chen;Lu Liu;Ye Qu
DOI：
10.1002/chin.200819238
发表时间：
2008-05
期刊：
ChemInform
影响因子：
--
作者：
H. Weingaertner
通讯作者：
H. Weingaertner
DOI：
10.1016/j.jct.2010.11.013
发表时间：
2011-04
期刊：
The Journal of Chemical Thermodynamics
影响因子：
--
作者：
E. González;N. Calvar;I. Domínguez;Á. Domínguez
通讯作者：
E. González;N. Calvar;I. Domínguez;Á. Domínguez
DOI：
10.1002/(sici)1097-4660(199704)68:4
发表时间：
1997-04
影响因子：
3.4
作者：
K. R. Seddon
通讯作者：
K. R. Seddon
原位形成的离子液体显着提高了减摩性和耐磨性
影响因子：
3.9
作者：
Fan, Mingjin;Liang, Yongmin;Liu, Weimin
通讯作者：
Liu, Weimin