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环己烷+甲醇是一个部分互溶的双液体系,其上临界溶解溫度为318.75K。有关该体系的混合热,文献数据不够完整,且相差甚大,如Campbell等人在323.65K测得的数据,比Mondain-Monval的结果(325.15K)约高17％。我们为了探讨盐类对部分互溶体系热力学性质的影响,进而了解盐类在这些体系中的行为,本工作首先用Picker混合型流动微量量热器,系统地测量了环己烷+甲醇体系在298.15,303.15,308.15,313.15,318.15和323.15K的混合热,同时考察Picker类型量热器对部分互溶体系的适用性。测量方法和试剂处理,前已报道。本工作采用不连续的逐点法,测量出各组分点稳定后的热效应。
Cyclohexane + methanol is a partially miscible two-liquid system with a critical solution temperature of 318.75K. Literature on the mixed heat of the system is incomplete and varies widely, as measured by Campbell et al at 323.65 K, which is about 17% higher than the result of Mondain-Monval (325.15 K). In order to investigate the effects of salts on the thermodynamic properties of partially miscible systems and to understand the behavior of salts in these systems, we first systematically measured the cyclohexane + methanol system at 298.15 with the Picker hybrid mobile micro-calorimeter , 303.15, 308.15, 313.15, 318.15 and 323.15K, respectively. Meanwhile, the applicability of Picker type calorimeters to partial miscible systems was also investigated. Measurement methods and reagent handling, previously reported. This work uses discontinuous point-by-point method to measure the thermal effect of the stability of each component point.