Transformations in methane hydrates
IM Chou, A Sharma, RC Burruss… - Proceedings of the …, 2000 - National Acad Sciences
… In the present study, synthetic sI methane hydrate (17) was loaded in the sample chamber
of a diamond cell (18). We found that methane hydrate transforms to a phase with different …
of a diamond cell (18). We found that methane hydrate transforms to a phase with different …
Temperature‐and pressure‐dependent structural transformation of methane hydrates in salt environments
D Shin, M Cha, Y Yang, S Choi, Y Woo… - Geophysical …, 2017 - Wiley Online Library
… methane hydrate forms a mixture of type I clathrate hydrate, ice, and hydrated salts. Under a
low-pressure condition, however, the methane hydrates … from the surface of hydrate crystals, …
low-pressure condition, however, the methane hydrates … from the surface of hydrate crystals, …
Transformation of methane hydrate to carbon dioxide hydrate: In situ Raman spectroscopic observations
JH Yoon, T Kawamura, Y Yamamoto… - … International Ocean and …, 2005 - onepetro.org
… arguments for the guest replacement of methane hydrate with carbon dioxide using in …
hydrate formed in the outer layer plays a key function of retarded dissociation of methane hydrate …
hydrate formed in the outer layer plays a key function of retarded dissociation of methane hydrate …
Methane transformation by photocatalysis
… Methane hydrate and shale gas are predicted to have substantial reserves, far beyond the
sum of other fossil fuels. Using methane … Because methane is so inert, its direct conversion …
sum of other fossil fuels. Using methane … Because methane is so inert, its direct conversion …
In situ observations of high-pressure phase transformations in a synthetic methane hydrate
H Shimizu, T Kumazaki, T Kume… - The Journal of Physical …, 2002 - ACS Publications
A methane hydrate (MH) single crystal was synthesized in a diamond anvil cell to investigate
its intrinsic high-pressure properties. With increasing pressure, the cubic sI phase of MH …
its intrinsic high-pressure properties. With increasing pressure, the cubic sI phase of MH …
Surface transformation of methane–ethane sI and sII clathrate hydrates
SF Dec - The Journal of Physical Chemistry C, 2012 - ACS Publications
… phases are not intimately mixed is consistent with identifying eq 3 as the dominant reaction
pathway for the C1–C2 sI ↔ sII hydrate transformation observed in this work. The validity of …
pathway for the C1–C2 sI ↔ sII hydrate transformation observed in this work. The validity of …
Transformation of deep‐water methane bubbles into hydrate
AV Egorov, RI Nigmatulin, AN Rozhkov - Geofluids, 2014 - Wiley Online Library
… of methane bubble phase behavior in the gas hydrate … of methane hydrates can be formed
from deep-water methane … The types of hydrate structures control the rate of methane hydrate …
from deep-water methane … The types of hydrate structures control the rate of methane hydrate …
Structural transformation of methane hydrate from cage clathrate to filled ice
T Ikeda, K Terakura - The Journal of chemical physics, 2003 - pubs.aip.org
The structural, dynamical, and electronic properties of methane hydrate under pressure and
at room temperature are investigated using the ab initio constant pressure molecular …
at room temperature are investigated using the ab initio constant pressure molecular …
High-pressure transitions in methane hydrate
JS Loveday, RJ Nelmes, M Guthrie - Chemical physics letters, 2001 - Elsevier
… Our own neutron and X-ray studies of the compression behaviour along the room temperature
isotherm have shown that methane hydrate transforms below 0.9 GPa to a new hydrate …
isotherm have shown that methane hydrate transforms below 0.9 GPa to a new hydrate …
Phase transitions in mixed gas hydrates: experimental observations versus calculated data
JM Schicks, R Naumann, J Erzinger… - The Journal of …, 2006 - ACS Publications
… process is not yet known, we observed the transformation of the light and the dark euhedral
hydrate crystals in Area 1 into sI methane hydrate and sII methane (+ ethane) + propane …
hydrate crystals in Area 1 into sI methane hydrate and sII methane (+ ethane) + propane …
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