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  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Improved Isosteric Heat of Hydrogen adsorption in Porous Metal-Organic Framework

2014년 8월 28일 16시 31분 17초
INOR.O-7 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 11시 : 56분
무기화학 - Oral Presentation for Young Inorganic Chemists
저자 및
임대운, 백명현1,*
한국원자력연구원 중성자과학연구부, Korea
1서울대학교 화학부, Korea
The lack of fossil fuel supplement and climate change by carbon based energy source require an alternative for energy carrier. Hydrogen has an attractive attention to be a promising energy source due to their high energy density and renewability. Even though it has a lot of advantages as a clean energy source, the use of hydrogen is challenging because of a difficulty of safe and efficient hydrogen storage system development. The storage of hydrogen as a solid state is considered more efficient and safe method than pressurized or cryogenic hydrogen. In order to store of H2 as solid state, porous metal-organic frameworks (MOFs) are potential candidate for hydrogen storage material owing to their high porousity, large surface area and tunable functionality. To date, at low temperature and high pressure, H2 storage capacity of MOFs have achieved up to 9 wt%. However, low interaction energy (Qst, < 8 kJmol-1) in MOF, between the frameworks and hydrogen, results in decrease of H2 storage capacity (less than 1 wt%) at room temperature. Therefore, to extend the hydrogen storage performance of MOFs at room temperature, the heat of adsorption for H2 should be enhanced. To improve the heat of adsorption of H2 in MOF, we try to fabricate Mg nanoparticles in MOF as a hybrid material(Mg@SNU-90) and include various cation into the new type of MOF(K+, NH4+ or MV2+⊂SNU-200), respectively. The hybrid material adsorbs hydrogen by both physi- and chemi-sorption with synergistic effects that increase isosteric heat of the H2 in physisorption and decrease the temperatures for chemisorption/desorp. In various cation inclusion into a new type MOF that incorporates a specific binding sites, K+ increase the Qst value in the H2 adsorption up to 2 kJmol-1 than that of pristine MOF.