- 期刊
Vapor-liquid Equilibria of Water + Acetic Acid, and Water + Propionic Acid Systems Saturated with Sodium Chloride
飽和氯化鈉於水＋乙酸於水＋丙酸系統之汽液平衡
摘要
本論文報告在常壓下飽和氯化鈉於水+乙酸於水+丙酸系統之汽液平衡數據，所有汽液平衡實驗數據均滿足Herington熱力學一致性測試，由汽液平衡實驗數據觀察得知水為一鹽入組成。對於飽和氯化鈉+水+乙酸系統之汽液平衡，在水莫耳分率74.09%處會形成一個共沸點；對於飽和氯化鈉+水+丙酸系統之汽液平衡，其共沸點會由94.97變為81.25%。在不增加任何可調為參數的情況，利用本研究小組過去所發展之計算方法來預估汽液平衡之鹽效應，對於這兩種系統，預估結果均與實驗數據相當吻合，其汽相組成與沸點之平均偏差分別小於1.7mol%與1.6K。
關鍵字
無資料並列摘要
The vapor-liquid equilibrium data for water + acetic acid and water + propionic acid systems saturated with sodium chloride are reported at atmospheric pressure. The experimental data satisfy the Herington thermodynamic consistency test. Water is observed to be a salting-in component. An azeotrope is fanned at 74.09 mol % of water for the saturated sodium chloride + water + acetic acid system. For the water + propionic acid system, the location of azeotrope is changed from 94.97 to 81.25 mol % of water when saturated sodium chloride is added to the system. Without any additional adjustable parameter, a calculation method developed in our previous work is utilized to predict the salt effect on the vapor-liquid equilibrium. For both systems, the predicted results agree well with the experimental data, with the mean deviations of vapor-phase composition and bubble point temperature being less than 1.7 mol % and 1.6 K, respectively.
延伸閱讀
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