Cage occupancy of methane clathrate hydrates in the ternary H2O–NH3–CH4 system

Claire Petuya; Mathieu Choukroun; Tuan H. Vu; Arnaud Desmedt; Ashley G. Davies; Christophe Sotin

doi:10.1039/D0CC04339G

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Cage occupancy of methane clathrate hydrates in the ternary H₂O–NH₃–CH₄ system†

Claire Petuya,

*^a Mathieu Choukroun,

^a Tuan H. Vu,

^a Arnaud Desmedt,

^b Ashley G. Davies^a and Christophe Sotin^a

Author affiliations

* Corresponding authors

^a Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
E-mail: claire.c.petuya@jpl.nasa.gov

^b Institut des Sciences Moléculaires, CNRS UMR 5255, Talence, France

Abstract

The incorporation of ammonia inside methane clathrate hydrate is of great interest to the hydrate chemistry community. We investigated the phase behavior of methane clathrate formed from aqueous ammonia solution. Ammonia's presence decreases methane occupancy in the large cages, without definitive Raman spectroscopic evidence for its incorporation inside the structure.

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Article information

DOI: https://doi.org/10.1039/D0CC04339G
Article type: Communication
Submitted: 22 Jun 2020
Accepted: 31 Jul 2020
First published: 18 Aug 2020

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Chem. Commun., 2020,56, 12391-12394

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Cage occupancy of methane clathrate hydrates in the ternary H₂O–NH₃–CH₄ system

C. Petuya, M. Choukroun, T. H. Vu, A. Desmedt, A. G. Davies and C. Sotin, Chem. Commun., 2020, 56, 12391 DOI: 10.1039/D0CC04339G

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Chemical Communications