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題 名 | Liquid Densities, Related Volumetric Properties, and Refractive Indices of Binary Mixtures for the Dimethyl Ether of a Glycol+Water from T=288.15K to 318.15K=二甲基醚醇與水的二元混合液體在溫度288.15K到318.15K的密度、相關體積性質與折射率 |
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作 者 | 古素貞; 杜建勳; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 35:5 2004.09[民93.09] |
頁 次 | 頁559-569 |
分類號 | 348 |
關鍵詞 | 二甲基醚醇; 水; 密度; 折射率; Glycol; Water; Density; Refractive index; |
語 文 | 英文(English) |
中文摘要 | 本研究利用振盪管式密度儀與數位型折射率計,量測{xCH3(OCH2CH2)vOCH2+(1-x)H2O; v=1-4}從溫度288.15K到318.15K,在大氣壓下整個摩耳分率範圍的密度與折射率。從所得的密度實驗數據,導出一些相關的體積性質如過剩摩耳體積、部份過剩摩耳體積及無限稀釋下的各成份的部份摩耳體積及部份過剩摩耳體積。每一個情況的過剩摩耳體積都是負值,而在其摩耳濃度大於0.4時,隨著v的增加其值會增大。除了v=1的系統在其摩耳濃度大於0.5之外,基本上過剩摩耳體積隨溫度的增加而增大。折射率偏差也從實驗數據計算得到,每一個情況的折射率偏差都是負值,且其現象與過剩摩耳體積相似。過剩摩耳體與折射率偏差都隨著溫度的增加而增大。過剩摩耳體積與折射率偏差都以Redlich-Kister方程式關聯。 |
英文摘要 | Densities and refractive indices of {X1 CH3(OCH2CH2)vOCH3+(1-X1)H2O} for v=1-4 at T=(288.15K, 298.15K, 308.15K, and 318.15K) were measured over the entire mole-fraction range. The density measurements were made by means of a vibrating-tube densimeter. Refractive indices were measured using a digital refractometer, from experimental densities, some related volume properties, such as excess molar volumes, VE, partial excess molar volumes, and the limiting partial molar volumes and of the limiting partial excess molar volumes of the components were derived. The excess molar volumes were negative in every case. Their values increased as v of the glycol increase with x1>0.4 and increased with increasing temperature expect for the system of v=1 for the glycol with x1>0.5. The deviations in the refractive index as a function of the mole fraction, △nD, were calculated from the experimental refractive index data. Phenomena similar to those of VE were observed for △nd. The results for the excess molar volumes and deviations in the refractive indices as a function of composition were fitted to the Redlich-Kister equation. |
本系統中英文摘要資訊取自各篇刊載內容。