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Solvation properties of glycine and glycylglycine in aqueous 1-hexyl-3-methylimidazolium bromide solution at different temperatures
The Journal of Chemical Thermodynamics ( IF 2.6 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.jct.2020.106268
Harsh Kumar , Ravinder Sharma

Abstract Densities ρ, Speed of sound u and FTIR spectral studies for ternary mixture including ionic liquid 1-hexyl-3-methylimidazolium bromide, water and amino acids were measured over the entire composition range and at five temperatures from 288.15 K to 308.15 K and atmospheric pressure by means of vibrating tube densitometer DSA 5000. Different parameters have been calculated by utilizing the experimental data of density and speed of sound. The transfer parameter such as the partial molar volume of transfer ( Δ V ϕ 0 ) and partial molar isentropic compression of transfer ( Δ K ϕ , S 0 ) have been determined by using the limiting apparent molar volume ( V ϕ 0 ) and limiting apparent molar isentropic compression ( K ϕ , s 0 ) data respectively. The result has been used to discuss the nature and strength of intermolecular interactions in these mixtures. Apparent molar and partial molar parameters concerning volumetric calculate that the solute-solvent interactions are dominating in the ternary system. The pair and triplet interaction coefficients found from partial molar volumes of transfer and partial molar isentropic compression of transfer explain the dominance of pairwise interactions. FT-IR spectra have been noted down for the mixture of amino acids and ionic liquid (1-hexyl-3-methylimidazolium bromide). The aim of this work is to study the solute-solvent interactions prevailing in the ternary mixture.

中文翻译:

甘氨酸和甘氨酰甘氨酸在 1-己基-3-甲基溴化咪唑水溶液中不同温度下的溶剂化性质

摘要 包括离子液体 1-己基-3-甲基咪唑溴化物、水和氨基酸的三元混合物的密度 ρ、声速 u 和 FTIR 光谱研究在整个组成范围内以及在从 288.15 K 到 308.15 K 的五个温度和大气条件下进行测量通过振动管密度计 DSA 5000 测量压力。利用密度和声速的实验数据计算了不同的参数。转移参数如转移的偏摩尔体积 ( Δ V φ 0 ) 和转移的偏摩尔等熵压缩 ( Δ K φ , S 0 ) 已通过使用极限表观摩尔体积 ( V ϕ 0 ) 和极限表观摩尔等熵压缩 (K ϕ , s 0 ) 数据。结果已用于讨论这些混合物中分子间相互作用的性质和强度。关于体积的表观摩尔和偏摩尔参数计算出溶质-溶剂相互作用在三元体系中占主导地位。从转移的部分摩尔体积和转移的部分摩尔等熵压缩中发现的对和三重相互作用系数解释了成对相互作用的优势。已记录氨基酸和离子液体(1-己基-3-甲基咪唑鎓溴化物)混合物的 FT-IR 光谱。这项工作的目的是研究三元混合物中普遍存在的溶质 - 溶剂相互作用。从转移的部分摩尔体积和转移的部分摩尔等熵压缩中发现的对和三重相互作用系数解释了成对相互作用的优势。已记录氨基酸和离子液体(1-己基-3-甲基咪唑鎓溴化物)混合物的 FT-IR 光谱。这项工作的目的是研究三元混合物中普遍存在的溶质 - 溶剂相互作用。从转移的部分摩尔体积和转移的部分摩尔等熵压缩中发现的对和三重相互作用系数解释了成对相互作用的优势。已记录氨基酸和离子液体(1-己基-3-甲基咪唑鎓溴化物)混合物的 FT-IR 光谱。这项工作的目的是研究三元混合物中普遍存在的溶质 - 溶剂相互作用。
更新日期:2021-01-01
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