欢迎访问过程工程学报, 今天是

›› 2008, Vol. 8 ›› Issue (1): 97-101.

• 系统与集成 • 上一篇    下一篇

甲基丙烯醛、甲醇与[BMIM]BF4二元体系的气液相平衡

陈琼,闫瑞一,袁晓亮,张锁江   

  1. 中国科学院过程工程研究所
  • 出版日期:2008-02-20 发布日期:2008-02-20

Vapor-Liquid Equilibria in Binary Systems of Methacrolein and Methanol with [BMIM]BF4

CHEN Qiong,YAN Rui-yi,YUAN Xiao-liang,ZHANG Suo-jiang   

  1. Institute of Process Engineering, Chinese Academy of Sciences
  • Online:2008-02-20 Published:2008-02-20

PDF

摘要： 测定了常压下甲基丙烯醛、甲醇与[BMIM]BF4二元体系在350.75, 341.55和331.55 K下的气液相平衡数据，并采用非无序双液(Non-random Tow-liquid Model, NRTL)模型对实验数据进行了关联. 实验结果表明，甲基丙烯醛和甲醇在离子液体[BMIM]BF4中的溶解度均随温度的升高而减小，随压力的升高而增大；甲基丙烯醛-[BMIM]BF4体系相对于理想溶液产生正偏差，甲醇-[BMIM]BF4体系相对于理想溶液产生负偏差. NRTL模型的关联结果与实验值吻合较好，甲基丙烯醛-[BMIM]BF4体系关联的平均偏差为1.20%，甲醇-[BMIM]BF4体系关联的平均偏差为0.42%.

关键词: 甲基丙烯醛, 气液相平衡, 离子液体, 非无序双液

Abstract: Vapor-liquid equilibria in the binary systems of methacrolein and methanol with 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4) were determined at 350.75, 341.55 and 331.55 K in this work. The non-random tow-liquid equation was applied to correlate the experimental data. The results showed that the solubility of methacrolein in [BMIM]BF4 decreased with temperature increasing and increased with pressure increasing, and the solubility of methanol in [BMIM]BF4 had the similar phenomenon. Compared with ideal solution, the system of methacrolein with [BMIM]BF4 showed positive deviation, and the system of methanol with [BMIM]BF4 showed negative deviation. The correlated results with non-random tow-liquid model were in good agreement with the experimental data. The average relative deviation of methacrolein and [BMIM]BF4 system was 1.20%, and that of methanol and [BMIM]BF4 system 0.42%.

Key words: methacrolein, vapor-liquid equilibrium, ionic liquid, non-random tow-liquid model