FUEL 55 |
| The uses of immobilized liquid membranes (ILMs) based on ionic liquids (ILs) in designing new separation processes have been extensively investigated. We have recently developed a unique class of ionic liquids whose cations consist of cationic metal complexes.[1-2] These ILs were synthesized through a new approach developed by us for preparation of ILs through transfer of metal ions. Our new strategy has yielded a series of new room-temperature ILs that are air/water stable, hydrophobic, highly conductive, and less viscous. The key feature of our new ILs is that metal ions are not introduced as solutes but instead as the structural units of IL cations. Accordingly, these new ILs have not only low viscocities because of their liquid-like structures but also good stabilities because of their polymer-like low vapor pressures. In this presentation, we would like to report the use of these new ILs for development of novel ILM systems in energy-related applications. For example, we have observed that the mixture flux, which contains two components (olefin and paraffin) flowing through an IL membrane made of our new silver-based IL, can be readily converted to a single-component flux. This result demonstrated the enormous potential of our new silver-containing ILs for separation of olefins and paraffins. This work is supported by the Office of Basic Energy Sciences, U.S. Department of Energy under contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. References (1) Huang, J. F.; Luo, H. M.; Dai, S. J. Electrochem. Soc. 2006, 153, J9-J13 (2) Zhu, H. G.; Huang, J. F.; Pan, Z. W.; Dai, S. Chem. Mat. 2006, 18, 4473-4477. |
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Green Chemistry for Sustainable Energy Supply and Conversion
8:15 AM-12:15 PM, Monday, April 7, 2008 Morial Convention Center -- Rm. 242, Oral
Division of Fuel Chemistry |