浊点法研究水-苯酚系统的临界溶解温度

浊点法研究了十二烷基磺酸钠和正丁醇对水-苯酚系统上临界溶解温度的影响，结果发现在试验的浓度范围内，该系统的上临界溶解温度随十二烷基磺酸钠质量分数的增大而线性下降．加入正丁醇后，系统的上临界溶解温度总体上升，但在正丁醇质量分数0．05％附近时变化缓慢，且有不明显的下降倾向．同时发现，当十二烷基磺酸钠与正丁醇共存于系统中时，它们之间还存在着一个使上临界溶解温度缓慢变化的匹配浓度区域．结合正规溶液的相平衡理论，探讨了添加剂对该系统上临界溶解温度的影响．

Study on critical solution temperature of water-phenol by means of cloud point

The effects of sodium laurylsulfonate and butanol on upper critical solution temperatures for water-phenol were studied by means of cloud point.From the experiment it was found that there is a li-(near rel)ationship between upper critical solution temperatures and the mass percent of sodium laurylsulfonate.Generally,the upper critical solution temperatures of the system increases with the content of butanol.There exists an interesting phenomenon that upper critical solution temperatures varied slowly at concentrations of 0.05% of butanol with and without sodium laurylsulfonate.It was concluded that there was a matching concentration area for sodium laurylsulfonate and butanol in which upper critical solution temperatures show no apparent variation.According to the theory of phase equilibrium for strictly ternary regular solution,the effects of additives on the upper critical solution temperatures of water-phenol were discussed in detail.