四丁基氟化铵在DMF中的活度系数测定  

Determination of Activity Coefficient of Tetra-n-butylammoniumfluoride in DMF

作　　者：徐珍[1,2] 吕早生[1,2] 

机构地区：[1]武汉科技大学化学工程与技术学院,湖北武汉430081 [2]湖北省煤转化与新型碳材料重点实验室,湖北武汉430081

出　　处：《化学与生物工程》2014年第12期39-41,共3页Chemistry & Bioengineering

摘　　要：采用电导法测定了298.15~343.15 K下四丁基氟化铵（TBAF）在DMF中的电导率,计算出TBAF在DMF中的摩尔电导率;根据Kohlrausch规则,采用外推法求出TBAF在DMF中的无限稀释摩尔电导率;采用DebyeHücker和Osager-Falkenhangen公式计算出TBAF在DMF中的平均活度系数,并讨论了TBAF电解质溶液活度系数的影响因素。结果表明,其活度系数随溶液浓度的增大和温度的升高而减小。The conductivities of tetra-n-butylammoniumfluoride（TBAF）in DMF were measured by conductivity method at 298.15~343.15 K.The molar conductivities of TBAF in DMF were calculated.The limiting molar conductivities of TBAF in DMF were obtained by extrapolation method according to Kohlrausch empirical formula.The mean activity coefficients of TBAF in DMF were calculated with Debye-Hücker and Osager-Falkenhangen formula.The effect of temperature and concentration on activity coefficient were discussed.The results showed that,the activity coefficient of TBAF in DMF reduced with the increase of concentration and temperature.

关 键 词：电导率 活度系数 无限稀释摩尔电导率 四丁基氟化铵 

分 类 号：O646[理学—物理化学] O552.4[理学—化学]