Ageing and Langmuir Behavior of the Cage Occupancy in the Nitrogen Gas Hydrate
AbstractClathrate hydrates are ice-like systems in which nanometric water cages encapsulate guest molecules. Functionalizing clathrate hydrates is an important issue, accomplished by playing with their chemical composition and their cage structure. In this issue, the cage occupancy and its kinetics constitute key information for future developments. In many aspects, nitrogen gas hydrate represents an interesting system not only for its applied relevance (e.g., gas separation and methane/carbon dioxide exchange), but also for its fundamental interest (e.g., structural metastability and kinetics). Thanks to the complementarity of neutron diffraction and Raman scattering, the vibrational signatures of the so-called SI and SII clathrate structures of the nitrogen hydrates are reviewed. Moreover, the investigation of the ageing of the SII structure is reported together with its interpretation in the frame of the Langmuir behavior of the cage filling at low temperature. The cage filling is monitored with the help of a time-dependent analysis of the Raman scattering signals (over several months). The SII large cage filling decreases with a kinetic rate of
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Petuya, C.; Damay, F.; Desplanche, S.; Aupetit, C.; Desmedt, A. Ageing and Langmuir Behavior of the Cage Occupancy in the Nitrogen Gas Hydrate. Crystals 2018, 8, 145.
Petuya C, Damay F, Desplanche S, Aupetit C, Desmedt A. Ageing and Langmuir Behavior of the Cage Occupancy in the Nitrogen Gas Hydrate. Crystals. 2018; 8(4):145.Chicago/Turabian Style
Petuya, Claire; Damay, Françoise; Desplanche, Sarah; Aupetit, Christian; Desmedt, Arnaud. 2018. "Ageing and Langmuir Behavior of the Cage Occupancy in the Nitrogen Gas Hydrate." Crystals 8, no. 4: 145.
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