| 학회 | 한국화학공학회 |
| 학술대회 | 2003년 봄 (04/25 ~ 04/26, 순천대학교) |
| 권호 | 9권 1호, p.819 |
| 발표분야 | 열역학 |
| 제목 | Phase Equilibrium and Spectroscopic Identification of Pure and Mixed Gas Hydrates |
| 초록 | The Three-phase H-LW-V equilibria for the binary CH4 + water, CO2 + water mixtures in silica gel pores with nominal diameters of 6.0, 15.0 and 30.0 nm were measured and compared with the pore hydrate model calculations. In addition, the hydrate phase equilibria of two ternary CH4 + NaCl + water and CO2 + NaCl + water mixtures were measured in 15.0 nm silica gel pores at three different NaCl concentrations of 3, 5, and 10 wt% to secure fundamental electrolyte role on simple hydrate formation occurring within porous media. The hydrate phase equilibria of the CH4 + CO2 +water mixture in 15.0 nm silica gel pores were also carefully determined at CO2 compositions of 20, 40, 60, and 80 mol% in order to meet changeable surroundings of sea floor and sediments. The three different silica gels of nominal diameters 6.0, 15.0 and 30.0 nm were used to check pore-size effects on hydrate equilibrium. Finally, to check the possible structure transition and the pore size effect on composition change the crystalline structure and hydration number of hydrates formed in silica gel pores of various sizes were identified by using the 13C NMR. |
| 저자 | 김도연, 서용원, 이 흔 |
| 소속 | 한국과학기술원 생명화학공학과 |
| 키워드 | Hydrate; NMR; Phase Equilibrium |
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