39 research outputs found
A Study on the Phase Equilibrium, X-ray Diffraction, and Raman Spectroscopic Analysis of N2O-CO2 Mixed Gas Hydrates
A gas hydrate is an inclusion compound formed by the interactions between water and relatively low molecular weight gases under appropriate conditions, i.e., low temperatures and high pressures. On the basis of differences in the sizes and shapes of the cavities of gas hydrates, they have been classified into three common families: structures I, II, and H. Each structure gives rise to different lattice dimensions for optimal guest occupancy. On the basis of the size ratio of the guest relative to the cavity, occupancy of the hydrate cage by guest molecules may be selective. In this study, the selective enclathration and occupancy of gas hydrates were evaluated from the mixed CO2-N2O gas used. The hydrate-liquid waterโvapor (H-LW-V) equilibrium line of CO2 and N2O were determined using a high-pressure equilibrium cell equipped with a magnetic driver and stirrer. Furthermore, CO2 and N2O were analyzed using Raman spectroscopic respectively. By using Raman spectroscopic, X-Ray Diffraction and Gas Chromatography, we reveal the mixed CO2-N2O gas hydrate formed a structure I clathrate hydrate. And we define the selective enclathration and occupancy of mixed CO2-N2O gas hydrates. This research is expected to provide basic knowledge pertaining to gas composition in the hydrate phase under different conditions.1. ์ ๋ก
1.1 ๊ฐ์ค ํ์ด๋๋ ์ดํธ 1
1.2 ์ฐ๊ตฌ๋ชฉ์ 11
2. ์คํ์ฅ๋น ๋ฐ ๋ฐฉ๋ฒ
2.1 Hydrate-Liquid water-Vapor (H-LW-V) ์ํํ ์ธก์ 12
2.1.1 ์คํ์ด๋ก 12
2.1.2 ์คํ์ฅ๋น 14
2.1.3 ์คํ๋ฐฉ๋ฒ 16
2.2 Gas Chromatography 19
2.2.1 ์คํ์ด๋ก 19
2.2.2 ์คํ์ฅ๋น 19
2.2.3 ์คํ๋ฐฉ๋ฒ 20
2.3 X-ray Diffraction 22
2.3.1 ์คํ์ด๋ก 22
2.3.2 ์คํ์ฅ๋น 24
2.4 Raman Spectroscopy 25
2.4.1 ์คํ์ด๋ก 25
2.4.2 ์คํ์ฅ๋น 27
3. ์คํ๊ฒฐ๊ณผ ๋ฐ ํ ์
3.1 Hydrate-Liquid water-Vapor (H-LW-V) ์ํํ ๊ฒฐ๊ณผ 30
3.2 Gas Chromatography ๊ฒฐ๊ณผ 33
3.3 X-ray Diffraction ๊ฒฐ๊ณผ 34
3.4 Raman Spectroscopy ๋ถ์ 36
4. ๊ฒฐ๋ก 43
์ฐธ๊ณ ๋ฌธํ 45Maste
Screening of LXRs antagonist and analyzing its effect on lipid metabolism
Thesis (master`s)--์์ธ๋ํ๊ต ๋ํ์ :์๋ช
๊ณผํ๋ถ,2003.Maste
Analysis of Fracture Characteristics of Porous Materials using Cohesive Zone Models
Maste
LTE ์์คํ ์์์ ์ ์์ ๋๋ค ์ก์ธ์ค ์ฑ๋ ์ต์ ํ ๊ธฐ๋ฒ
ํ์๋
ผ๋ฌธ (์์ฌ)-- ์์ธ๋ํ๊ต ๋ํ์ : ์ ๊ธฐ. ์ปดํจํฐ๊ณตํ๋ถ, 2011.2. ์ต์ฑํ.Maste
โLandscapeโ and โSoundscapeโ of the Eighteenth-Century England : with Emphasis on the Relations between the Landscape Garden and the Instrumental Music
MRAC๋ฅผ ์ ์ฉํ ์๋์ถ์ ๊ธฐ๋ฅผ ๊ฐ์ง๋ ์ ๋์ ๋๊ธฐ ์ผ์๋ฆฌ์ค ๋ฒกํฐ์ ์ด์ ๊ดํ ์ฐ๊ตฌ
้้ๅญ์ ๅไธป์ ๅฎๅ
ํ์๋
ผ๋ฌธ(์์ฌ)--์์ธ๋ํ๊ต ๋ํ์ :์ ์นํ๊ณผ,2003.Maste