甲苯与TX100溶液间气液平衡关系  

RELATIONSHIP OF VAPOR-LIQUID EQUILIBRIUM BETWEEN TOLUENE AND TX100 SOLUTIONS

作　　者：李英杰[1] 田森林[1] 莫虹[1] 宁平[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650093

出　　处：《环境化学》2010年第1期109-112,共4页Environmental Chemistry

基　　金：国家自然科学基金资助项目(20607008);云南省教育厅科学研究基金资助项目(07Y11138);云南省中青年学术带头人后备人才培养项目(2007PY01-08)

摘　　要：采用气相EPICS(equilibrium partitioning in closed system)法研究了甲苯与非离子表面活性剂TritonX-100(TX100)溶液间气液平衡分配关系.研究表明,甲苯的表观亨利系数(Hc)随TX100浓度的增加而降低,TX100可明显地影响甲苯在气液相的分配行为,抑制甲苯挥发;当TX100的浓度低于其临界胶束浓度(CMC),浓度的增加对Hc影响不明显,抑制甲苯挥发能力相对较弱;浓度大于CMC,Hc随表面活性剂浓度的增加迅速降低.温度对Hc的影响显著,温度升高,相应Hc也随之增大.Effect of nonionic surfactant,Triton X-100 （TX100）,on the relationship of the vapor-liquid partitioning of toluene was studied by equilibrium partitioning in closed system（EPICS）.The results showed that the apparent Henry,s constant（Hc）reduced significantly with increasing TX100 concentrations and the vapor-liquid partition behavior of toluene changed obviously by increasing the aqueous concentration of TX100.Therefore,the volatilization was restrained.Hc changed slowly and the restraining ability of TX100 was weaker below the CMC of TX100.While TX100 concentrations exceeded its CMC,Hc changed rapidly with increasing TX100 concentrations.Influence of temperature on Hcwas obvious.When the temperature increased,Hc enhanced.

关 键 词：甲苯 TX100 气液平衡 表观亨利系数 

分 类 号：O642.4[理学—物理化学]