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New ionic liquids and ionic liquid-based polymers and liquid crystals for gas separations.

机译：用于气体分离的新型离子液体和基于离子液体的聚合物和液晶。

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Membrane-based gas separations are of great importance to industry, society and the environment. Global energy demand will continue to increase for the foreseeable future, and chemical separations with improved efficiencies will aid in curbing fuel use. Membranes potentially offer less energy intensive alternatives to traditional separation technologies. Proper design considerations are needed to engineer high-performance materials that selectively segregate specific components from a mixture based on affinity, shape, size, charge or other chemical and physical properties. However, much research is still needed in order for membranes to be economically viable and displace older technologies.; Separations involving light gases (CO2, N2, O 2, CH4, H2, small hydrocarbons, etc.) will be crucial to the realization of the everyday use of renewable fuels and independence from foreign oil. These political issues coupled with growing social concern and desire for clean, sustainable technologies will drive research into and the implementation of membrane-based gas separations.; The research presented here is unique in that it takes a bottom-up approach to design---materials are created specifically with CO2-based separations in mind. Several related classes of materials that represent radical new approaches to gas separations are employed: room temperature ionic liquids (RTILs), polymerizable RTILs for solid-state membranes, and nanostructured lyotropic liquid crystals (LLCs). Each class possesses great potential to separate light gases, and has unique features that are just beginning to be explored.; Several, widely applicable facts important to advancing gas separation technology have been realized during the course of this research: The inclusion of extra polar groups in RTILs allows for enhanced separation selectivity between CO2/N2 and CO2/CH4, while maintaining high CO2 loading levels. Fabrication of poly(RTIL) membranes can further enhance CO2 solubility compared to RTILs and traditional polymers. The use of LLC-based membranes gives improved performance in CO2-based separations relative to analogous, isotropic structures. The realization of each of these relationships can potentially have broad impacts on research into materials for gas separations.
机译：基于膜的气体分离对工业，社会和环境至关重要。在可预见的未来，全球能源需求将继续增长，效率更高的化学分离将有助于减少燃料的使用。膜有可能提供比传统分离技术低能耗的替代品。需要适当的设计考虑，才能设计出高性能的材料，这些材料可以根据亲和力，形状，大小，电荷或其他化学和物理特性从混合物中选择性地分离特定成分。然而，为了使膜在经济上可行并取代旧技术，仍需要进行大量研究。涉及轻气体（CO 2，N 2，O 2，CH 4，H 2，小烃等）的分离对于实现日常使用可再生燃料以及独立于外国石油至关重要。这些政治问题，加上社会日益关注和对清洁，可持续技术的渴望，将推动基于膜的气体分离的研究和实施。这里提出的研究是独特的，因为它采用了一种自下而上的方法进行设计-专门根据基于CO2的分离来创建材料。使用了几种代表气体分离新方法的相关材料类别：室温离子液体（RTIL），用于固态膜的可聚合RTIL和纳米结构化溶致液晶（LLC）。每个类别都具有分离轻质气体的巨大潜力，并且具有刚刚开始探索的独特功能。在这项研究过程中，已经认识到对推进气体分离技术重要的，广泛适用的事实：RTIL中包含额外的极性基团，可以提高CO2 / N2和CO2 / CH4之间的分离选择性，同时保持较高的CO2负载水平。与RTIL和传统聚合物相比，聚（RTIL）膜的制造可以进一步提高CO2的溶解度。相对于类似的各向同性结构，基于LLC的膜的使用在基于CO2的分离中具有更高的性能。这些关系中的每一个的实现都可能对气体分离材料的研究产生广泛的影响。

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