Synthesis, spectroscopic characterization and apparent molar properties of ethanolammonium based ionic liquids with DMSO

Chemical Thermodynamics and Thermal Analysis Pub Date : 2022-12-01 DOI:10.1016/j.ctta.2022.100076

N. Hari Krishna , S. Karlapudi , Ch Bharath Kumar , R.L. Gardas , K. Sivakumar , P. Venkateswarlu

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引用次数: 1

Abstract

The density (ρ) and speed of sound (u) of binary solutions containing protic ionic liquids such as N‑butyl ethanolammonium acetate [NBEA][Ace] and N‑butyl ethanolammonium propionate [NBEA][Pro] with Dimethyl Sulfoxide (DMSO) were determined over a temperature range of (293.15 to 318.15) K at intervals of 5 K at 0.1 MPa pressure. The apparent molar volume (V_φ), isentropic compressibility (k_s) and apparent molar isentropic compressibility (k_s,φ) were estimated using the measured data. The apparent molar volume (V_φ^∞) and apparent molar isentropic compressibility (k_φ^∞) at infinite dilution, as well as the related empirical parameters (S_v, B_v, S_k and B_k), were calculated using the Redlich-Mayer type equation. The solute-solute and solute-solvent interactions are indicated by the obtained limiting apparent molar volume and limiting apparent molar isentropic compressibility. Furthermore, the apparent molar expansibility at infinite dilution was calculated using temperature dependent apparent molar volume at infinite dilution (E_φ^∞).

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乙醇铵基二甲基亚砜离子液体的合成、光谱表征及表观摩尔性质

在（293.15至318.15）K的温度范围内，在0.1MPa的压力下，以5K的间隔测定了含有质子离子液体（如乙酸正丁酯[NBEA][Ace]和丙酸正丁酯[NEA][Pro]与二甲基亚砜（DMSO）的二元溶液的密度（ρ）和声速（u）。利用测量数据估算了表观摩尔体积（Vφ）、等熵压缩性（ks）和表观摩尔等熵压缩率（ks，φ）。用Redlich-Mayer型方程计算了无限稀释时的表观摩尔体积（Vφ∞）和表观摩尔等熵压缩率（kφ∞）以及相关的经验参数（Sv、Bv、Sk和Bk）。溶质-溶质和溶质-溶剂相互作用由所获得的极限表观摩尔体积和极限表观等熵压缩率表示。此外，使用无限稀释时与温度相关的表观摩尔体积（Eφ∞）计算了无限稀释时的表观摩尔比膨胀率。

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来源期刊

Chemical Thermodynamics and Thermal Analysis

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3.10

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