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High‐Performance of Gas Hydrates in Confined Nanospace for Reversible CH 4 /CO 2 Storage
Author(s) -
Casco Mirian E.,
Jordá José L.,
Rey Fernando,
Fauth François,
MartinezEscandell Manuel,
RodríguezReinoso Francisco,
RamosFernández Enrique V.,
SilvestreAlbero Joaquín
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201600958
Subject(s) - clathrate hydrate , chemical engineering , hydrate , natural gas , decomposition , kinetics , carbon fibers , chemistry , carbon dioxide , high pressure , materials science , thermodynamics , organic chemistry , physics , quantum mechanics , composite number , engineering , composite material
The molecular exchange of CH 4 for CO 2 in gas hydrates grown in confined nanospace has been evaluated for the first time using activated carbons as a host structure. The nano‐confinement effects taking place inside the carbon cavities and the exceptional physicochemical properties of the carbon structure allows us to accelerate the formation and decomposition process of the gas hydrates from the conventional timescale of hours/days in artificial bulk systems to minutes in confined nanospace. The CH 4 /CO 2 exchange process is fully reversible with high efficiency at practical temperature and pressure conditions. Furthermore, these activated carbons can be envisaged as promising materials for long‐distance natural gas and CO 2 transportation because of the combination of a high storage capacity, a high reversibility, and most important, with extremely fast kinetics for gas hydrate formation and release.