| 학회 |
한국화학공학회 |
| 학술대회 |
2011년 봄 (04/27 ~ 04/29, 창원컨벤션센터) |
| 권호 |
17권 1호, p.617 |
| 발표분야 |
열역학 |
| 제목 |
Asymmetric Structure Induced Thermal Expansion Behavior Occurring in Tetrahydrofuran + Diatomic Hydrogen Clathrate Hydrates |
| 초록 |
Clathrate hydrates are a type of inclusion compounds stabilized by van der waals interaction between guest molecules and host lattice (water). In this study, we investigated the asymmetric structure induced thermal expansion behavior occurring in tetrahydrofuran (THF) + diatomic hydrogen clathrate hydrates by high-resolution neutron powder diffraction. In the binary (THF + X) clathrate hydrate system (X = HD, D2, and H2) known to cubic Fd3m structure, lattice parameters of (THF + X) clathrate hydrates are refined by Fullprof softwater. Comparing to the results from H2 and D2 in (THF + X) clathrate hydrate system, lattice parameter of THF + HD system exhibits larger than that of THF + H2 and D2. Because HD has much lower molecular weight than D2, we conclude that thermal behavior of THF + HD clathrate hydrate is induced by asymmetric structure of HD guest. This abnormal expansion of clathrate hydrates clearly due to asymmetric van der waals radii of HD guest might be one of important physical properties to understand the physico-chemical properties of clathrate hydrates. |
| 저자 |
차민준1, 이성수2, 신규철1, 윤여범1, 권민철1, 이 흔1
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| 소속 |
1KAIST, 2한국원자력(연) |
| 키워드 |
neutron; clathrate; hydrogen; tetrahydrofuran
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
