Results 211 to 220 of about 9,420 (237)
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Annual Review of Earth and Planetary Sciences, 2000
Substantial volumes of methane gas are trapped below the seafloor and in permafrost by an ice-like solid called clathrate hydrate. Global estimates of the methane in clathrate hydrate may exceed 1016 kg, which represents one of the largest sources of hydrocarbon on Earth.
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Substantial volumes of methane gas are trapped below the seafloor and in permafrost by an ice-like solid called clathrate hydrate. Global estimates of the methane in clathrate hydrate may exceed 1016 kg, which represents one of the largest sources of hydrocarbon on Earth.
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Overview: Nucleation of clathrate hydrates
The Journal of Chemical Physics, 2016Molecular level knowledge of nucleation and growth of clathrate hydrates is of importance for advancing fundamental understanding on the nature of water and hydrophobic hydrate formers, and their interactions that result in the formation of ice-like solids at temperatures higher than the ice-point.
Pramod Warrier +4 more
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Clathrate hydrates are poor models of biomolecule hydration
Biopolymers, 1998Clathrate hydrates form the basis of a general model of biomolecule hydration. In clathrate hydrate crystal structures, the size of hydrogen-bonded water rings is highly constrained to five members. The clathrate hydrate model predicts that the size of water rings near biomolecule surfaces is similarly constrained to five members. This report describes
L A, Lipscomb, F X, Zhou, L D, Williams
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Clathrate Hydrates of Some Amines
Science, 1967A crystallographic study of some alkylamine hydrates establishes that these are polyhedral clathrate hydrates. While the simpler alkylamines form hydrates with water structures related to those of the gas hydrates or the alkylonium salt hydrates, the diethylamine and tert -butylamine hydrates have water frameworks ...
G A, Jeffrey, T H, Jordan, R K, McMullan
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Clathrate hydrates under pressure
Physics Today, 2007Icy solids in Earth's permafrost and deep ocean basins store an enormous reservoir of natural gas. That reservoir, and scientists' efforts to synthesize related molecular-storage compounds, may help solve our energy problems.
Wendy L. Mao +2 more
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Molecular Crystals and Liquid Crystals, 1977
Abstract Seventeen new clathrate hydrates of hydrogen and/or fluorine containing molecules have been identified, mostly from the characteristic nuclear magnetic resonance line shapes observed when the hydrates are prepared from D2O.
J. A. Ripmeester, D. W. Davidson
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Abstract Seventeen new clathrate hydrates of hydrogen and/or fluorine containing molecules have been identified, mostly from the characteristic nuclear magnetic resonance line shapes observed when the hydrates are prepared from D2O.
J. A. Ripmeester, D. W. Davidson
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Clathrate III (Bromine Hydrate): Structural Relationship with Clathrate I
ChemPhysChem, 2020AbstractTetragonal structure of clathrate III (TS−I) is found in bromine hydrate, ionic hydrates, in particular, in hydrates of tetraalkylammonium salts, as well as in clathrate compounds of the group IV elements (‘Zintl clathrates’). In this paper new description of this clathrate structure is suggested.
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Diisoamyldibutylammonium Bromide Clathrate Hydrates
Russian Journal of General Chemistry, 2002In the system i-Am2Bu2NBr-H2O, along with the known compound i-Am2Bu2NBr·38H2O, three new clathrate hydrates were revealed: i-Am2Bu2NBr·32H2O, i-Am2Bu2NBr·26H2O, and i-Am2Bu2NBr·24H2O. Crystals of all the hydrates were isolated, and their compositions and melting points were determined.
L. S. Aladko +2 more
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Tuning clathrate hydrates for hydrogen storage
Nature, 2005The storage of large quantities of hydrogen at safe pressures is a key factor in establishing a hydrogen-based economy. Previous strategies--where hydrogen has been bound chemically, adsorbed in materials with permanent void space or stored in hybrid materials that combine these elements--have problems arising from either technical considerations or ...
Lee, H Lee, Huen +8 more
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Physicochemical Properties of Ionic Clathrate Hydrates
Chemistry – An Asian Journal, 2009AbstractIonic clathrate hydrates are known to be formed by the enclathration of hydrophobic cations or anions into confined cages and the incorporation of counterions into the water framework. As the ionic clathrate hydrates are considered for their potential applicability in various fields, including those that involve solid electrolytes, gas ...
Shin, K Shin, Kyuchul +3 more
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