含环己酮的四个二元体系的过量体积

CIESC Journal

含环己酮的四个二元体系的过量体积

李淑芬,张建侯

天津大学化学工程系,天津大学化学工程系现左天津理工学院

出版日期:1985-06-25 发布日期:1985-06-25

Excess Volumes of Four Binary Systems Containing Cyclohexanone

Li Shufen and Zhang Jianhou (Chien-Hou Chang) (Department of Chemical Engineering, Tianjin University)

Online:1985-06-25 Published:1985-06-25

摘要/Abstract

摘要： 在大气压下测定了苯和环已烷体系在298.15K的过量体积V_m~E,所得结果与文献相符,验证了本文实验测定的可靠性.测定了环已酮(x)与苯(Ⅰ)、环已烷(Ⅱ)、环戊烷(Ⅲ)和甲基环戊烷(Ⅳ)四种二元体系在293.15K的V_m~E,并用方程式V_m~E=x(1-x)sum from i=0 to 3(A_i(1-2x)~l)进行关联.对四种体系的 A_0、A_1、A_2和A_3值分别依次为(Ⅰ)-0.8440,-0.2589,-0.1654,-0.02286,(Ⅱ)0.7006,0.3833,0.2562,0.1700,(Ⅲ)-0.2055,0.2896,0.3806,0.2923,(Ⅳ)-0.1402,0.3740,0.3488,0.2692;各体系的剩余标准误差σ约为0.002cm~3mol~(-1).实验测定采用连续稀释法,对连续稀释膨胀仪和计算方法进行了部分改进.

Abstract: Measurements of the molar excess volumes VmE of the system benzene-cyclohexane have been made under atmospheric pressure at 298.15K, and the reliability of the results obtained has been checked by comparison with literature data. Experimental determinations of the excess volumes have also been carried out at 293.15K for the binary systems of cyclohexanone (x) with each of the four substances, benzene( I ), cyclohexanone(Ⅱ), cyclopentane(Ⅲ), and methylcyclopentane( Ⅳ ). The data obtained were fitted with the equation VmE = x(1-x) @i=0 Ai(1-2x)i. The coefficients A0, A1,A2 and A3 of the correlating equations for the four systems are respectively ( I ) -0.8440, -0.2589, -0.1654, -0.02286, (Ⅱ)0.7006, 0.3833, 0.2562, 0.1700, (Ⅲ)-0.2055, 0.2896, 0.3806, 0.2923 and(Ⅳ)- 0.1402, 0.3740,0.3488,0.2692, with a residual standard deviation σ of about 0.002cm3mol-1 for each system. The measurements were made with the continuous dilution method, where the dilatometer and the calculation method were partly improved.

李淑芬,张建侯. 含环己酮的四个二元体系的过量体积 [J]. CIESC Journal.

Li Shufen and Zhang Jianhou (Chien-Hou Chang) (Department of Chemical Engineering, Tianjin University). Excess Volumes of Four Binary Systems Containing Cyclohexanone[J]. .