1,1,1-三氟-2,3-二氯丙烷饱和蒸汽压的测定与关联  

Measurement and correlation of saturated vapor pressure of 1,1,1-trifluoro-2,3-dichloropropane

作　　者：张伟[1] 吕婧[1] 杨志强[1] 吕剑[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《化学工程》2013年第10期36-39,共4页Chemical Engineering(China)

基　　金：陕西省"13115"科技创新工程重大科技专项(2010ZDKG-90)

摘　　要：采用静态法,测定了1,1,1-三氟-2,3-二氯丙烷(HCFC-243db)在293.59—400.80 K温度区间的饱和蒸汽压数据,并用Antoine方程ln p=A-B/(T+C)进行关联,确定了蒸汽压方程的3个参数A,B,C的值分别为17.205,5 485.902和90.276。Antoine方程计算得到的饱和蒸汽压与实验数据吻合较好,相对误差在-1.05%—2.88%之间。通过Clausius-Clapeyron方程计算得到HCFC-243db在293.59—400.80 K范围内的平均摩尔蒸发热为28 326.222 J/mol,通过Antoine方程计算得到的常压沸点为345.12 K。Saturated vapor pressures of 1,1,1-trifluoro-2, 3-dichloropropane （HCFC-243db） were measured at 293. 59400.80 K by static method. The measured saturated vapor pressures of HCFC-243db and temperatures were correlated by Antoine equation In p = A - B/（ T ＋ C）, and the constants of the equation were determined as A = 17. 205, B =5 485. 902 and C =90.276. The relative deviations between the saturated vapor pressures of HCFC- 243db calculated from the Antoine equation and experimental data were from - 1.05% to 2.88% , indicating that the correlated values of HCFC-243db saturated vapor pressures agreed well with the measured ones. The average molar evaporation heat of HCFC-243db was also estimated at 293.59-400.80 K by Clausius-Clapeyron equation and its value was 28 326. 222 J/tool. Calculated from Antoine equation, the normal boiling point was 345.12 K.

关 键 词：1 1 1-三氟-2 3-二氯丙烷 HCFC-243db 饱和蒸汽压 Antoine方程 

分 类 号：TQ222.24[化学工程—有机化工]