イベント > 第42回講演会 Department of Chemistry University of Calgary Prof. George Shimizu

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
期日 2017年03月13日
詳細

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日時:2017年 3月 13日(月)16時から17時
場所:産総研第5事業所 第1本館 第5会議室(5-1 2101室)

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.

第42回講演会チラシ
第42回講演会開催概要

 

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