Journal of Zhejiang University SCIENCE
(ISSN 1009-3095, Monthly)

2005   Vol. 6B   No. 6   p.559-562

Isobaric vapor-liquid equilibrium for methyldichlorosilane-methyltrichlorosilane-dimethyldichlorosilane system

QIU Zu-min^†1,2, XIE Xin-liang¹, LUO Mei¹, XIE Feng-xia¹

(¹School of Environmental Science and Engineering, Nanchang University, Nanchang 330029, China)
(²Key Laboratory of Poyang Lake Ecology and Bio-resource Utilization, Nanchang University, Nanchang 330029, China)
^†E-mail: qiuzm@ncu.edu.cn
Received Oct. 26, 2004; revision accepted Mar. 1, 2005

Abstract: This paper describes measurement of vapor-liquid equilibrium (VLE) data of methyldichlorosilane-methyltrichlorosilane-dimethyldichlorosilane system and that of the three binary systems at 101.325 kPa with a new pump-ebulliometer. The equilibrium composition of the vapor phase was calculated from pTx by indirect method. The model parameters of the liquid activity coefficient of the Wilson, NRTL, Margules and van Laar equations was corrected by the least square method. The ternary system VLE data were predicted by the Wilson equation, with the calculated boiling points showing good agreement with the experimental data.

Key words: Ebulliometer, Vapor-liquid equilibrium, Methyldichlorosilane, Methyltrichlorosilane, Dimethyldichlorosilane
doi:10.1631/jzus.2005.B0559             CLC number: O642.42