Thermodynamic and thermophysic properties of ionic liquids and their mixtures with other fluids

离子液体及其与其他流体的混合物的热力学和热物理性质

• 批准号: 5382165
• 负责人: Professor Dr. Andreas Heintz
• 金额: --
• 依托单位: IFP Energies nouvelles-établissement de Lyon
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5382165?language=en
• 关键词: Thermodynamic; thermophysic; properties; ionic; liquids

Ionic liquids (IL) are nonaqueous systems (mainly organic salts composed of bulky univalent ions) with melting points near or below room temperature. They have been attracting recently attention for their potential to become novel technological fluids: information is available particularly on their media for homogeneous catalysis. IL are claimed to be "green solvent" since they are non-inflammable, non-volatile, easy to recycle and often non-toxic. They are, however, at this stage expensive, not always easy to prepare with physical properties and stability highly affected by impurities. A more realistic estimation of the real potential of IL is hampered by the lack of data on physico-chemical properties. This project is submitted by a consortium of two German and two French teams bringing together specialists in physical chemistry on one side and experts in preperation of IL on the other side. Three partners are based in academic institution and the fourth partner belongs to an organisation of applied industrial research. Two teams acting on the basis of complementarity will carry out research on thermodynamic and thermophysical properies o 6 selected IL, pure and in mixeture with water and organic liquids and several gases. All the sample of IL will be prepared by the third team in ultra high quality. The fourth (industrial) partner will interact with other teams on the consulting bases. A unique feature will be the measurement on samples containing well known amounts of specified admixtures in order to investigate influence of impurities on measured properties. The new data will be obtained for the following properties: density and viscosity, temperature of fusion, thermal stability, heat capacity, solubility of gases in IL, miscibility of IL with H2O and C6 organic compounds, activity coefficients, electric conductivity and surface tension. The temperatures ranges of the investigation will go for some properties up to 200°C. The important physicochemical dimension of the project will be molecular simulation of IL pure and in mixtures. This project can be considered as a basic for a later proposal of a wider European network on IL.

离子液体（IL）是一种非水体系（主要是由大体积单价离子组成的有机盐），其熔点接近或低于室温。它们最近因其成为新型技术流体的潜力而引起人们的关注：特别是关于其均相催化介质的信息。IL被称为“绿色溶剂”，因为它们不易燃、不挥发、易于回收并且通常无毒。然而，在此阶段，它们是昂贵的，并不总是容易制备，其物理性质和稳定性受杂质的影响很大。由于缺乏关于理化性质的数据，对IL的真实的潜力的更现实的估计受到阻碍。该项目由两个德国和两个法国团队组成的财团提交，一方汇集了物理化学专家，另一方汇集了IL制备专家。其中三个合作伙伴位于学术机构，第四个合作伙伴属于应用工业研究组织。两个小组将在互补的基础上对6种选定的IL的热力学和热物理性质进行研究，这些IL是纯的，也是与水、有机液体和几种气体的混合物。所有的白细胞介素样品将由第三个团队以超高质量制备。第四个（工业）合作伙伴将与咨询基地的其他团队互动。一个独特的功能将是对含有已知量的特定外加剂的样品进行测量，以研究杂质对测量性能的影响。将获得以下性质的新数据：密度和粘度，熔化温度，热稳定性，热容量，气体在IL中的溶解度，IL与H2O和C6有机化合物的可溶解性，活度系数，电导率和表面张力。对于某些属性，调查的温度范围将高达200°C。该项目的重要物理化学维度将是IL纯和混合物的分子模拟。该项目可被视为以后关于建立一个更广泛的欧洲IL网络的建议的基础。