화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터)
권호 22권 2호, p.2069
발표분야 열역학
제목 Structural analysis of neutron powder diffraction pattern of clathrate hydrates
초록 Clathrate hydrate is a sort of nonstoichiometic crystalline solids which are stabilized by various interactions between the hydrophobic guest molecules and the hydrogen-bonded water cluster. The crystal structures of a DClO4 hydrate depending on temperature were identified by the direct space method and Rietveld refinement of the neutron powder diffraction patterns. A phase transition causing a position change of vacancy sites in host framework was observed at about 180 K and this transition is considered to result in weakened host proton-anion interactions and to induce a change of proton conduction behavior of the DClO4 hydrate. The present findings provide a good explanation of the proton dynamics in the host framework of the hydrogen fluoride-free acid clathrate hydrates.
저자 신규철1, 차민준2, 이원희3, 이 흔4
소속 1경북대, 2강원대, 3한국에너지기술(연), 4KAIST
키워드 열역학
E-Mail kyuchul.shin@knu.ac.kr
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