Measurement and correlation of the solid-liquid equilibrium of 2-(

2013年第7卷第1期

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《化学科学与工程前沿（英文）》 >> 2013年第7卷第1期 doi: 10.1007/s11705-013-1316-7

Measurement and correlation of the solid-liquid equilibrium of 2-(

1. The National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2. The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin 300071, China

发布日期： 2013-03-05

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摘要

In this work, the enthalpy of fusion and melting points of 2-( -butyl)-5-methylphenol (2B5MP) and 2-( -butyl)-4-methylphenol (2B4MP) were measured by differential scanning calorimetry (DSC). The binary solid-liquid equilibrium (SLE) of both compounds were predicted by integrated computer aided system (ICAS) and measured by DSC. The corresponding eutectic molar composition is 0.6998 and the eutectic temperature is 281.96 K. The quasi-static heat capacities of 2B5MP and 2B4MP were evaluated by stochastic temperature modulation DSC technique (TOPEM). The SLE experimental data were correlated using the Margules, Wilson, and non-random two liquid (NRTL) equations and a good agreement between measurement and calculation could be obtained.

关键词

solid-liquid equilibrium (SLE) ; eutectic ; integrated computer aided system (ICAS) ; TOPEM ; correlation