In this paper, the solubility properties of the ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF₄]) were studied using a high-pressure, high-temperature set-up employing the pressure-drop technique. [EMIM][BF₄] was selected because it is used as sweep liquid in a membrane reactor (MR)-based methanol synthesis (MR-MeS) process recently proposed/studied by our group. The MR-MeS studies indicated high methanol (MeOH) solubilities in the IL under typical MeS reaction conditions, which then motivated this study to measure such solubilities directly under non-reactive conditions to validate the MR study findings. In addition, during the MR-MeS studies concerns existed about the CO₂ solubility in [EMIM][BF₄], since it is a reactant and its dissolution in the IL would be detrimental for performance. Studies, therefore, were also carried out to investigate CO₂, in addition to MeOH solubility. Our investigation indicates that though CO₂ solubilities are high at room temperature, they become negligible at the typical MeS conditions.

在本文中，使用高压高温装置，通过高压高温装置研究了离子液体（IL）1-乙基-3-甲基咪唑四氟硼酸盐（[EMIM] [BF ₄ ]）的溶解性。下降技术。选择[EMIM] [BF ₄ ]是因为它在我们小组最近提出/研究的基于膜反应器（MR）的甲醇合成（MR-MeS）工艺中用作吹扫液体。MR-MeS研究表明，在典型的MeS反应条件下，IL中的甲醇（MeOH）溶解度较高，这促使本研究直接在非反应条件下测量此类溶解度，以验证MR研究结果。此外，在MR-MeS研究期间，人们还担心CO ₂在[EMIM] [BF ₄ ]中的溶解度。]，因为它是反应物，并且其在IL中的溶解会对性能产生不利影响。因此，除了MeOH溶解度之外，还进行了研究以研究CO ₂。我们的研究表明，尽管在室温下CO _2的溶解度很高，但在典型的MeS条件下它们可以忽略不计。