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Synthesis of Phase-Pure Interpenetrated MOF-5 and Their Gas Sorption Properties

등록일
2009년 8월 14일 16시 16분 33초
접수번호
1299
발표코드
33P9포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅲ>
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
김현욱, Sunirban Das, 김기문
포항공과대학교 화학과, Korea
Metal-organic porous materials (MOPMs) have attracted great interests because of their well-defined and adjustable porous structure. MOF-5, one of the best known MOPMs, has been extensively investigated for gas storage for the past several years. Interpenetrated MOF-5 (int-MOF-5) was recently discovered, but phase-pure int-MOF-5 has not been synthesized. Here we present the synthesis of phase-pure, int-MOF-5 and their hydrogen sorption properties. We synthesized int-MOF-5 in pure phase by carrying out the reaction in presence of weak bases such as melamine and 2,4,6-tris(4-pyridyl)-1,3,5-triazine. Single-crystal X-ray diffraction analysis revealed that int-MOF-5 has the same cubic topology of MOF-5 with two fold interpenetration. The phase purity of the framework was confirmed by X-ray powder diffraction analysis on bulk samples. Interestingly, int-MOF-5 shows a higher hydrogen sorption capacity than MOF-5 at 77 K and 1 atm, even though it has a lower surface area. The higher hydrogen sorption capacity is presumably due to its higher enthalpy of adsorption. Details of the work will be presented.

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