A filled ice methane hydrate stable up to 1.5 Mbar

• Main Authors: Gaal, Richard, Schaack, Sofiane, Ranieri, Umbertoluca, Depondt, Philippe, Gillet, Philippe, Kuhs, W. F., Finocchi, Fabio, Bove, Livia Eleonora
• Other Authors: Institut des Nanosciences de Paris (INSP), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Oxydes en basses dimensions (INSP-E9), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2019
• Subjects: [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]; [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry; Methane hydrate
• Online Access: https://hal.science/hal-03029397

Conference Abstract International audience Gas hydrates, composed of a water framework filled with neutral guest molecules are important in many fields from energy storage to greenhouse-gas management, but are also considered as constituents of icy moon and planetary interiors. In this contribution we present high-pressure Raman spectroscopy data of CH 4-D 2 O hydrate up to 1.5 Mbar. By parallel molecular dynamics simulations we identify phase transitions and show that the stable phase up to the highest observed pressure is filled hexagonal ice Ih.