Results 151 to 160 of about 27,808 (179)

Dissociation of double hydrate and methane hydrate

AIP Conference Proceedings, 2019
A comparison of the dissociation of n-propanol double hydrate and methane hydrate at external air temperature 22 °C and at air pressure of 1 bar was carried out experimentally. The particles of the double hydrate showed a significantly higher growth rate in the reactor than particles of gas methane hydrate. Thus, alcohol is a promoter in the generation
Yu. Yu. Bozhko, O. S. Yashutina
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Combustion of methane hydrates

Journal of Engineering Thermophysics, 2013
Gas hydrates of methane were obtained under the laboratory conditions, and their structural characteristics were determined there. Kinetics of methane hydrate dissociation in the air atmosphere was studied experimentally. The combined effect of high temperature and pressure gradients was studied and it was shown that in practice it is necessary to take
V. E. Nakoryakov, S. Ya. Misyura, S. L. Elistratov, A. Yu. Manakov, A. E. Shubnikov   +4 more
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Hydrophobic hydration of methane

Molecular Physics, 1997
The method of neutron diffraction and isotopic substitution (NDIS) with H/D substitution on both the solute and the solvent was used to determine the hydration structure of a methane molecule (CM4, M = H or D) in terms of partial pair correlation functions g HM(r) and g OM(r).
De Jong, PHK, Wilson, JE, Neilson, GW, Buckingham, AD   +3 more
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Recovering Methane from Solid Methane Hydrate with Carbon Dioxide

Angewandte Chemie, 2003
CO2 in, CH4 out! From NMR spectroscopic measurements of composition and kinetics, it can be shown that the recovery of methane from methane hydrate is possible through its reaction with CO2 (see diagram), even though the yield is less than that expected from kinetic and thermodynamic arguments.
Lee H, Seo Y, Seo YT, Moudrakovski IL, Ripmeester JA   +4 more
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Methane Hydrate Drilling Technology

Offshore Technology Conference, 2005
Abstract Most of the world's resources of hydrocarbons energy remain in the form of methane hydrates or clathrates. These exist naturally as frozen crystalline lattice consisting of molecules of water that have formed an open, cage-like lattice that encloses molecules of methane.
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Enhanced methane hydrate formation with cyclopentane hydrate seeds

Applied Energy, 2017
Abstract This work presents the kinetic promotion effect of sII cyclopentane (CP) hydrate seeds on sI CH 4 hydrate formation in sodium dodecyl sulfate (SDS) solutions. Gas hydrates are one of the promising materials for natural gas storage due to their high volumetric capacity and safety aspect.
Seungjun Baek, Yun-Ho Ahn, Junshe Zhang, Juwon Min, Huen Lee, Jae W. Lee   +5 more
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Simulations of the methane hydrate/methane gas interface near hydrate forming conditions conditions

Fluid Phase Equilibria, 1996
Abstract Molecular dynamics simulations have been used to probe the interface between type I methane hydrate and methane gas in the temperature range 250–300 K, and at pressures of 1 and 100 MPa. The interface was found to be stable up to 270 K, with the onset of melting occurring more readily at the lower pressure.
P.M. Rodger, T.R. Forester, W. Smith
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Sea Floor Methane Hydrates at Hydrate Ridge, Cascadia Margin

2013
The crest of Hydrate Ridge harbors a variety of gas hydrates in near-surface sediments. Hydrate formation and destruction continuously shape the ridge topography. Interstitial Cl-anomaly patterns in conjunction with video-guided sampling have established that the uppermost sediment column contains several distinct layers of gas hydrate which are ...
Suess, E., Torres, M.E., Bohrmann, G., Collier, R.W., Rickert, D., Goldfinger, C., Linke, P., Heuser, A., Sahling, H., Heeschen, K.U., Jung, C., Nakamura, K., Greinert, J., Pfannkuche, O., Trehu, A.M., Klinkhammer, G.P., Whiticar, M.J., Eisenhauer, A., Teichert, B., Elvert, M.   +19 more
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Methane recovery from methane hydrate using pressurized CO2

Fluid Phase Equilibria, 2005
Abstract The dynamics of CH 4 replacement in CH 4 hydrate with high-pressure CO 2 was observed with in situ laser Raman spectroscopy at temperatures ranging from 271.2 to 275.2 K and at an initial pressure of 3.25 MPa. The amount of CH 4 hydrate decomposition was found to be almost proportional to that of CO 2 hydrate formation for a series of
Masaki Ota, Yuki Abe, Masaru Watanabe, Richard L. Smith, Hiroshi Inomata   +4 more
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Extraction of Methane from Methane Hydrate Using Lasers

Japanese Journal of Applied Physics, 2003
A new laser tool for the extraction of methane from methane hydrates is proposed, and its superiority over other methods is discussed. The type of laser suitable for the extraction is also discussed, and the chemically pumped oxygen-iodine energy transfer laser (COIL) is found to be the most suitable candidate.
Tomoo Fujioka, Kazuya Jyosui, Hiroyuki Nishimura, Kazuyoku Tei   +3 more
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