Results 171 to 180 of about 28,105 (213)

Methane Hydrate at High Pressure

Journal of Petroleum Technology, 1949
Abstract The conditions at which methane and water form solid hydrates have beenextended from 4,000 to 11,200 pounds per sq. in. The curve at high pressure hadbeen in doubt because of Villard's report of a critical decompositiontemperature.
Riki Kobayashi, Donald L. Katz
openaire   +1 more source

Photocatalytic conversion of methane contained in methane hydrates

Topics in Catalysis, 2005
Photocatalytic conversion of methane dissolved in water at 1 MPa and 100 MPa, and methane contained in methane hydrates was performed. Several photocatalysts based on tungsten oxide and titania was investigated. Both full spectrum and visible light were used as the illumination source.
openaire   +1 more source

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
openaire   +2 more sources

The structure of deuterated methane–hydrate

The Journal of Chemical Physics, 2000
We present the results of a high-resolution neutron diffraction experiment with a fully deuterated methane hydrate type I at temperatures of 2, 100, and 150 K. Precise crystallographic parameters of the ice-like D2O lattice and the thermal parameters of the encaged methane molecules have been obtained.
C. Gutt, B. Asmussen, W. Press, M. R. Johnson, Y. P. Handa, J. S. Tse   +5 more
openaire   +1 more source

Contrasting the hydration thermodynamics of methane and methanol

Physical Chemistry Chemical Physics, 2019
The hydration thermodynamics of methane and methanol depend on the cavity creation work and energy of van der Waals and H-bonding attractions.
openaire   +2 more sources

Hydrates in the methane‐nitrogen system

The Canadian Journal of Chemical Engineering, 1965
AbstractThe gas hydrate equilibrium curves for systems containing methane and nitrogen have been obtained in the temperature interval 32°F. to 72°F. and between pressures of 350 and 5100 Ib./sq.in.abs. The composition of the equilibrium gas and hydrate phases was determined experimentally at 32°F. and 44°F.
Jaysukh Jhaveri, Donald B. Robinson
openaire   +1 more source

Kinetics of methane hydrate dissociation

Doklady Physical Chemistry, 2015
The methane hydrate dissociation at an external pressure of 1 bar has been experimentally studied. The methane dissociation rate depends on the heat transfer intensity in the course of dissociation. Quasi-isothermal and nonisothermal conditions of clathrate dissociation have been compared.
V. E. Nakoryakov, S. Ya. Misyura
openaire   +1 more source

Methane storage as a hydrate

Natural gas hydrates represent a source of methane which are estimated to be more than twice the amount of conventional natural gas reserves. In this regard, based on the long-term stable existence of hydrates in nature it is promising to apply gas hydrates technology for storing and transporting methane. It offers several advantages over other methods
Sadeh, E., Farhadian, A., Stoporev, A., Semenov, M., Chirkova, Y., Naeiji, P., Varfolomeev, M.   +6 more
openaire   +3 more sources

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.
openaire   +1 more source

Self-preservation effect exceeding 273.2 K by introducing deuterium oxide to form methane hydrate

Chemical Engineering Journal, 2022
Jun Chen, Zhikai Liang, Guangjin Chen
exaly