Binary and Ternary Phase Equlibria of Supercritical Fluid/Organic/Ionic Liquid Systems

摘要

Phase equilibria of supercritical fluid/organic liquid/ionic liquid systems have been measured in a high pressure view cell. Two ionic liquids such as 1-butyl-3-methyl imidazolium hexafluorophosphate ([bmim][PF6]) and 1-butyl-3-methyl imidazolium tetrafluoroborate ([bmim][BF4]) and an organic compound, methanol, have been used. The increase in the amount of organic compound at fixed amount of ionic liquid lowers the LCEP pressure. The K-point pressure was not changed by the type of ionic liquid, the amount of organic compound, or the amount of moisture content.