磷酸三丁酯在超临界二氧化碳中的溶解度  

SOLUBILITY OF TRI-BUTYL-PHOSPHITE IN SUPERCRITICAL CARBON DIOXIDE

作　　者：周春平[1] 丁一刚[1] 杨昌炎[1] 丁晓娟[1] 王存文[1] 程健[1] 

机构地区：[1]武汉工程大学化工与制药学院 湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430074

出　　处：《精细石油化工》2007年第4期37-41,共5页Speciality Petrochemicals

基　　金：湖北省教育厅资助项目(2003B002)

摘　　要：采用超临界萃取装置测定了热力学温度为303.15,313.15,323.15 K,压力为8.5～25.0 MPa条件下磷酸三丁酯(TBP)在超临界二氧化碳中的溶解度,并根据溶剂化缔合理论、相平衡规则及高压对溶剂化平衡的影响建立了溶解度的数学模型。结果表明,所建立模型的TBP溶解度预测值与实验值吻合良好。用Chrastil模型关联实验值发现,用模型计算的精度远高于Chrastil模型关联的结果。The solubility of tri-butyl-phosphite（TBP） in supercritical carbon dioxide under different supercritical conditions was determined by using supercritical extraction device. The range of temperature measured was 303.15 - 323.15 K and the pressure was 8.5 - 25 MPa. A model reflecting the solubility behavior was established according to the solvation concept, the results of phase equilibrium and the equilibrium constants of high-pressure reactions. The results indicated that the solubility data correlated by the mathematical model was in fairly good agreement with the experiment data, which was also better than the chrastil model for the correlation of the experiment results.

关 键 词：磷酸三丁酯 超临界流体二氧化碳 溶解度 数学模型 

分 类 号：TQ225.27[化学工程—有机化工]