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http://dx.doi.org/10.6111/JKCGCT.2010.20.2.085

Characteristics of sulfur hexafluoride hydrate film growth at the vapor/liquid interface  

Kim, Soo-Min (School of Materials Science and Engineering, Pusan National University)
Lee, Hyun-Ju (School of Materials Science and Engineering, Pusan National University)
Lee, Bo-Ram (Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH))
Lee, Yoon-Seok (School of Materials Science and Engineering, Pusan National University)
Lee, Eun-Kyung (School of Materials Science and Engineering, Pusan National University)
Lee, Ju-Dong (Dongnam Technology Service Division, Korea Institute of Industrial Technology)
Kim, Yang-Do (School of Materials Science and Engineering, Pusan National University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.20, no.2, 2010 , pp. 85-92 More about this Journal
Abstract
$SF_6$ gas has been widely used in many industrial fields as insulating, cleaning and covering gases due to its outstanding arc-extinguishing and insulating properties. However, global warming potential of $SF_6$ gas is 23,900 times more than that of $CO_2$ and it remains in the air during 3,200 years. For these reason, technological and economical effects could be expected for the separation of $SF_6$ from gas mixtures by hydrate forming process. In this study, we carried out morphological studies for the $SF_6$ hydrate crystal to understand its formation and growth mechanisms. $SF_6$ hydrate film was initially formed at the interfacial boundary between gas and liquid regions, and then subsequent dendrite crystals growth was observed. The dendrite crystals grew to the direction of gas region probably due to the guest gas concentration gradient. The detailed growth characteristics of $SF_6$ hydrate crystals such as nucleation, migration, growth and interference were discussed in this study.
Keywords
Hydrate; Sulfur hexafluoride; Film growth; Dendrite;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Y.-T. Seo, I.L. Moudrakovski, J.A. Ripmeester, J.-W. Lee and H. Lee, "Efficient recovery of $CO_{2}$ from flue gas by clathrate hydrate formation in porous silica gels", Environmental Science and Technology 39(7) (2005) 2315.   DOI   ScienceOn
2 J.D. Lee, M. Song, R. Susilo and P. Englezos, "Dynamics of methane-propane clathrate hydrate crystal growth from liquid water with or without the presence of n-heptane", Crystal growth & Design 6(6) (2006) 1428.   DOI   ScienceOn
3 H. Lee, J. Lee, D.Y. Kim, J. Park, Y.-T. Seo, H, Zeng, I.L. Moudrakovski, C.I. Ratcliffe and J.A. Ripmeester, "Tuning clathrate hydrates for hydrogen storage", Nature 434(7034) (2005) 743.   DOI   ScienceOn
4 J.W. Lee, M.-K. Chun, K.M. Lee, Y.J. Kim and H. Lee, "Phase equilibria and kinetic behaviour of $CO_{2}$ hydrate in electrolyte and porous media solutions: application to ocean sequestration of $CO_{2}$", Korean J. Chem. Eng. 19(4) (2002) 673.   DOI   ScienceOn
5 O.R. West, C. Tsouris, S. Lee, S.D. McCallum and L. Liang, "Negatively buoyant $CO_{2}$-hydrate composite for ocean carbon sequestration", AIChE J. 49(1) (2003) 283.   DOI   ScienceOn
6 M. Sugaya and Y.H. Mori, "Behaviour of clathrate hydrate formation at the boundary of liquid water and a fluorocarbon in liquid or vapor state", Chemical Engineering Science 51(13) (1996) 3505.   DOI   ScienceOn
7 S. Thomas and R.A. Dawe, "Review of ways to transport natural gas energy from countries which do not need the gas for domestic use", Energy 28(14) (2003) 1461.   DOI   ScienceOn
8 G.A. Jeffrey, "Inclusion compounds", Atwood, J.L. Davies, J.E.D. and MacNichol, D.D., eds., Academic Press (1984) 135.
9 K. Sugahara, M. Yoshida, T. Sugahara and K. Ohgake, "Thermodynamic and raman spectroscopic studies on pressure-induced structural transition of $SF_{6}$ hydrate", J. Chem. Eng. 51 (2006) 301.
10 Y.F. Makogon, "Hydrates of natural gas", Penn Well, Tulsa, Oklahoma (1981) Chapter 2.
11 Y.-T. Seo and H. Lee, "Structure and guest distribution of the mixed carbon dioxide and nitrogen hydrates as revealed by X-ray diffraction and $C^{13}$ NMR spectroscopy", J. Phys. Chem. B 108(2) (2004) 530.   DOI   ScienceOn
12 P. Englezos and J.D. Lee, "Gas hydrate: A cleaner source of energy and opportunity for innovative technologies", Korean J. Chem. Eng. 22(5) (2005) 671.   DOI   ScienceOn
13 E.D. Sloan, Clathrate Hydrates of Natural Gases 2nd ed., Marcel Dekker, New York (1998).
14 H. Ganji, M. Manteghian, K. Sadaghiani Zadeh, M.R. Omidkhah and H. Rahii Mofrad, "Effect of different surfactants on methane hydrate formation rate, stability and storage capacity", Fuel. 86 (2007) 411.
15 M.A. Clarke and P.R. Bisnoi, "Measuring and modeling the rate of decomposition of gas hydrates formed mixtures of methane and ethane", Chem Eng Sci. 56 (2001) 4715.   DOI   ScienceOn
16 I. Aya, K. Yamane and N. Yamada, "Stability of clathrate-hydrate of carbon dioxide in highly pressurized water", HTD-Vol. 215, Am. Soc. Mech. Engrs, New York, N.Y. (1992) 17.
17 Yasuhiko H. Mori and Takaaki Mochizuki, "Mass transport across clathrate hydrate films-a capillary permeation model", Chemical Engineering Science 52(20) (1997) 3613.   DOI   ScienceOn