二種低共熔混合溶劑及其水溶液之熱物性質量測研究

Thermophysical property measurements for two ammonium-based deep-eutectic solvents and their aqueous solutions

凱妮娜(Kathrina Siongco)

指導教授 ： 李夢輝

中原大學/工學院/化學工程研究所/碩士(2012年)

https://doi.org/10.6840/cycu201200002

摘要

本研究量測二種低共熔混合溶劑(deep eutectic solvents, DES)及其水溶液之熱物性質，其二種系統分別為N,N-Diethylethanolammonium chloride – Glycerol與N,N-Diethylethanolammonium chloride – Ethylene Glycol，以莫耳比1:2 (salt:hydrogen bond donor)的比率混合。實驗量測之熱物性質為：密度(ρ)、黏度(η)、折射率(nD)與電導度(κ)，其溫度範圍為298.15 - 343.15 K。另量測比熱值(CP) ，其溫度範圍為303.15 - 353.15 K。
實驗所測量之密度、折射率、黏度與比熱以其過剩性質代入Redlich-Kister type equation，並以溫度與濃度為變數作迴歸計算。電導度以modified Vogel-Tamman-Fulcher equation作迴歸計算。其密度、折射率、電導度、黏度以及比熱值的平均絕對偏差(AAD%)分別為0.01、0.01、1.3、0.9以及0.07。由此可知，迴歸計算值與實驗值相當符合。本實驗之結果可作為熱力學與電化學應用計算之基礎數據的計算依據。

關鍵字

低共熔混合溶劑 ； 熱物性質

並列摘要

In this study, the thermophysical properties of two ammonium-based deep eutectic solvents (DESs) and their aqueous solutions were presented. The two investigated DES were N,N-Diethylethanolammonium chloride – Glycerol and N,N-Diethylethanolammonium chloride – Ethylene Glycol both with 1:2 (salt:hydrogen bond donor) molar ratio. Densities (ρ), refractive indices (nD), electrical conductivities (κ) and viscosities (η) were measured at the temperature range of 298.15 to 343.15 K. The heat capacities (CP) were measured from 303.15 to 353.15 K.
The temperature and composition dependences of density, refractive index, viscosity, and heat capacity, together with their excess properties, were correlated using a Redlich-Kister type equation while the electrical conductivity was fitted using a modified Vogel-Tamman-Fulcher equation. The correlations yield satisfactory results as indicated by the overall average absolute percent deviations (AAD%) of 0.01, 0.01, 1.3, 0.9, and 0.07 for ρ, nD, κ, η and CP, respectively.

並列關鍵字

Deep-Eutectic Solvents ； Redlich-Kister equation ； VTF equation ； Thermophysical properties

參考文獻

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