Liquid鈥揕iquid Phase Equilibria and Critical Phenomena of the Binary Mixture Nitrobenzene + n-Nonane

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• 作者：Tianxiang Yin ; Aiqin Shi ; Jingjing Xie ; Mingjie Wang ; Zhiyun Chen ; Xueqin An ; Weiguo Shen
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2014
• 出版时间：April 10, 2014
• 年：2014
• 卷：59
• 期：4
• 页码：1312-1319
• 全文大小：340K
• 年卷期：v.59,no.4(April 10, 2014)
• ISSN：1520-5134

文摘

The liquid鈥搇iquid coexistence curve for nitrobenzene + n-nonane has been measured in a wide temperature range. The values of the critical exponent 尾 obtained from the liquid鈥搇iquid equilibrium data in the critical region were found to be in good agreement with that of the 3D Ising universality. The monotonous crossover behavior from Ising criticality to mean-field one was observed. The isobaric heat capacities per unit volume were measured, with which the asymmetric behavior of the diameter of the coexistence curve was well-described by the complete scaling theory. Moreover, the turbidity data near the critical point were obtained to deduce the critical amplitudes of the correlation length and the osmotic compressibility, which together with the amplitudes related to the coexistence curve and the heat capacity were used to calculate the universal scaling ratios and to confirm their theoretical predictions.