Isobaric Vapor鈥揕iquid鈥揕iquid Equilibrium for Water + Cyclohexane + Acrylic Acid at 200 mmHg

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• 作者：Liyan Liu ; Yuan Zhong ; Ruifeng Zhang ; Wei Tan
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2015
• 出版时间：November 12, 2015
• 年：2015
• 卷：60
• 期：11
• 页码：3268-3271
• 全文大小：273K
• ISSN：1520-5134

文摘

Isobaric vapor鈥搇iquid鈥搇iquid equilibrium (VLLE) data were measured for the ternary system water + cyclohexane + acrylic acid at 200 mmHg (absolute pressure). The apparatus are a modified dynamic recirculating still equipped with mixing section for experimental test and a gas chromatography (Agilent GC7890A) for analyzing, respectively. The VLLE data have been used to verify the dependability of the NRTL, NRTL-HOC, and UNIQUAC-HOC models prediction results for the water + cyclohexane + acrylic acid system. The parameters for these models were obtained using experimental data regression. Comparing the predictions and experimental data, the HOC equations have a good effect in vapor phase prediction with a strong self-polymerization of compounds system, and the NRTL-HOC model has a more acceptable prediction of the VLLE data than the UNIQUAC-HOC model.