›› 2008, Vol. 8 ›› Issue (1): 97-101.
• 系统与集成 • Previous Articles Next Articles
CHEN Qiong,YAN Rui-yi,YUAN Xiao-liang,ZHANG Suo-jiang
Online:
Published:
陈琼,闫瑞一,袁晓亮,张锁江
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
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
CHEN Qiong;YAN Rui-yi;YUAN Xiao-liang;ZHANG Suo-jiang. Vapor-Liquid Equilibria in Binary Systems of Methacrolein and Methanol with [BMIM]BF4[J]. , 2008, 8(1): 97-101.
陈琼;闫瑞一;袁晓亮;张锁江. 甲基丙烯醛、甲醇与[BMIM]BF4二元体系的气液相平衡[J]. , 2008, 8(1): 97-101.
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