Thermophysical properties such as density (ρ), dynamic viscosity (η), and refractive index (n_D) of three binary liquid mixtures comprising alkanolamines N-methyldiethanolamine (MDEA), diethanolamine (DEA), and 2-amino-2-methyl-1-propanol (AMP) with ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([Emim][Ac]) were measured under atmospheric pressure, at T = 293.15–333.15 K with 10 K intervals over the whole concentration range. [Emim][Ac] is an ionic liquid with imidazolium cation and acetate anion, which has been nominated for use in various industries due to its unique properties. Obtained data show that all thermophysical properties of pure systems, as well as the binary systems, decreased with increasing temperature; however, the effect of concentration on the thermophysical properties is different for three binary mixtures and has a nonuniform trend similar to the effect of temperature. The experimental results showed that the temperature and concentration have a significant effect on the thermophysical properties of solutions investigated in this work. Therefore, to describe all thermophysical properties as a function of temperature and concentration simultaneously, suitable empirical correlations were used. Finally, using the measured data, excess molar volumes (V^E), thermal expansion coefficients (α), dynamic viscosity deviations (Δη), and excess refractive indices (n_D^E) for the binary mixtures were computed and were correlated using the Redlich–Kister equation.

中文翻译：

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N-甲基二乙醇胺 (MDEA)、二乙醇胺 (DEA) 和 2-氨基-2-甲基-1-丙醇 (AMP) 与 1-Ethyl-3-methylimidazolium Acetate ([ Emim][Ac])

包含烷醇胺N-甲基二乙醇胺 (MDEA)、二乙醇胺 (DEA) 和 2-氨基-2-甲基-的三种二元液体混合物的热物理性质，例如密度 (ρ)、动态粘度 (η) 和折射率 ( n _D )在大气压下，在T= 293.15–333.15 K，整个浓度范围内的间隔为 10 K。[Emim][Ac]是一种含有咪唑鎓阳离子和乙酸根阴离子的离子液体，因其独特的性能而被提名用于各个行业。获得的数据表明，纯体系以及二元体系的所有热物理性质都随着温度的升高而降低；然而，对于三种二元混合物，浓度对热物理性质的影响是不同的，并且具有类似于温度影响的非均匀趋势。实验结果表明，温度和浓度对本工作中研究的溶液的热物理性质有显着影响。因此，为了同时将所有热物理性质描述为温度和浓度的函数，使用了合适的经验相关性。最后，使用测量数据，多余的摩尔体积（V ^ë），热膨胀系数（α），动态粘度偏差（Δη），和过量的折射率（Ñ _d ^Ë）的二元混合物进行了计算，并使用瑞德利奇-Kister方程式进行了关联。