第42回講演会 Department of Chemistry University of Calgary Prof. George Shimizu
| イベント名 | 第42回講演会 Department of Chemistry University of Calgary Prof. George Shimizu |
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| 期日 | 2017.03.13 |
| 詳細 |
産総研触媒化学融合研究センターでは、様々な分野で活躍している大学、公的研究機関、企業等の方々をお招きして講演会を開催することで分野の垣根を越えた連携の実現を目指しています。多くの方々のご参加をお待ちしております。 日時：2017年 3月 13日（月）16時から17時 講演概要： ◆“CO2 Capture and Proton Conduction in Metal Organic Frameworks (MOFs)” Prof. George Shimizu This presentation will concern our efforts towards tailoring MOFs towards two globally relevant energy challenges, CO2 capture and fuel cells. In contrast to liquid amines which chemisorb CO2 and have high energy costs for regeneration, the MOF approach typically gives physisorbed gases and hence more facile release. Despite the weaker binding mode, we will show that high selectivities are possible owing to heats of adsorption over 40 kJ/mol and cooperativity between CO2 molecules in augmenting binding.1 Related to this is the need to enhance water stability of the MOF backbone and our efforts to achieve this goal will be presented.2,3 Finally, a new MOF with high stability and the ability to actually capture CO2 in wet gas will be presented. The second topic concerns an approach to proton conductors for PEM fuel cell membranes.4 A major hurdle in these technologies is an electrolyte capable of operating above 100˚C. Higher operating temperatures will enhance electrode kinetics and decrease electrode poisoning among several critical operational benefits. In contrast to polymer approaches towards these electrolytes, we have used a MOF strategy to generate crystalline networks with acidic pores. These MOFs present options for higher temperature conduction,5 conduction over 10-2 Scm-1,6,8 in a water stable structure.7,8 1) R. Vaidhyanathan et al. Science, 2010, 330, 650., 2) J. M. Taylor et al., J. Am. Chem. Soc. 2012, 134, 14338., 3) Gelfand, B. S. et al Angew. Chem. Int. Ed. 2016, 55,14614., 4) G. K. H. Shimizu et al. Science, 2013, 341, 354., 5) J. A. Hurd et al. Nature Chem. 2009, 1, 705., 6) S. Kim et al., J. Am. Chem. Soc. 2013, 135, 963., 7) J. M. Taylor et al., J. Am. Chem. Soc. 2013, 135, 1193., 8) Ramaswamy, P. et al. J. Am. Chem. Soc. 2015, 137, 7640.
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| 備考 | 【問い合わせ先】 触媒化学融合研究センター 担当：白川 TEL:029-861-2763 |
