马沛生; 陈明鸣; 董奕
MA Peisheng; CHEN Mingming; DONG Yi
摘要: Solid-liquid equilibria (SLE) of three binary systems and seven ternary systems containing
maleic anhydride(MA) are measured by visual method. The experimental data are compared with
the calculated ones with modified universal quasichemical functional group activity
coefficient(UNIFAC) method in which the interaction parameters between groups come from two
sources, dortmund data bank(DDB), if there’s any, and correlations based on our former
presented experimental SLE data of twenty binary systems. New groups of MA, ACCOO group,
COO group, >C=O group and cy-CH2 group are defined and the SLE data of maleic anhydride in
isopropyl acetate in literature are cited in order to assess the new interaction
parameters, correlated with Wilson equation and the λh equation. The modified UNIFAC
method with these new regressed interaction parameters is also used to predict other three
binary systems containing maleic anhydride.