I am a postdoctoral researcher in the Planetary Ices section (3227) at JPL. I am working on the stability of clathrate hydrates which are crystalline compounds consisting of water molecules forming cages inside of which guest molecules are encapsulated. These ice-like systems have numerous technical and industrial applications in such different fields like energy and environment. Moreover, clathrate hydrates might also be nodal pieces for astrophysics and planetary science due to their potential involvements in the formation of planetesimals, comets and other planets of our Solar System. Their dissociation in icy satellites interiors is a potential source of gas emissions like in the case of Titan, where dissociation of methane clathrate hydrates could contribute significantly to the replenishment of atmospheric methane. So, the aim of my work is to study these systems to better understand this problematic using Raman spectroscopy, XRD and Calorimetry (DSC) and trying to apply these results to geophysical model of Titan.
Before starting this postdoc, I completed my PhD in chemical physics at the University of Bordeaux (ISM lab) which was about the investigations of the stability, the guest partitioning and the molecular selectivity of gas clathrate hydrates using Raman spectroscopy, neutron diffraction and some DFT calculations (VASP).
8-Unraveling the stability of the SI and SII carbon monoxide hydrate with a combined DFT-neutron diffraction investigation, The Journal of Chemical Physics, 2019, 150, 184705, C. Petuya, L. Martin-Gondre, P. Aurel, F. Damay, A. Desmedt.
7-Revealing CO preferential encapsulation in the mixed CO-N2 clathrate hydrate, The Journal of Physical Chemistry C, 2019, 123, 8, 4871-4878, C. Petuya, A. Desmedt.
6-Selective trapping of CO2 gas and cage occupancy in CO2-N2 and CO2-CO mixed gas hydrates, Chem. Commun. 2018, 54, 4290-4293, C. Petuya, F. Damay, S. Desplanche, D. Talaga, A. Desmedt.
5-Ageing and modeling of the cage occupancy in nitrogen gas hydrate, Crystals, 2018, 8, 145, C. Petuya, F. Damay, S. Desplanche, C. Aupetit, A. Desmedt.
4-Guest partitioning and metastability of the nitrogen gas hydrate, The Journal of Physical Chemistry C, 2018, 122, 566-573, C. Petuya, F. Damay, B. Chazallon, J.-L. Bruneel, A. Desmedt.
3-Guest partitioning in carbon monoxide hydrate by Raman spectroscopy, The Journal of Physical Chemistry C, 2017, 121, 13798-13802, C. Petuya, F. Damay, D. Talaga, A. Desmedt.
2-Neutron scattering of semi-clathrate and clathrate hydrates, A. Desmedt, L. Bedouret, J. Ollivier, C. Petuya, in “Gas Hydrates: From Characterization and Modelling to Applications”, Eds D. Broseta, L. Ruffine, A. Desmedt, London: Wiley-ISTE, ISBN: 978-1-84821-969-4, Vol. 1, Chap. 1, 2017.
1-Modifiying the flexibility of of water cages by co-including acidic species within clathrate hydrate, The Journal of Physical Chemistry C, 2015, 119, 8904-8911, A. Desmedt, L. Martin-Gondre, T. T. Nguyen, C. Petuya, L. Barandiaran, O. Babot, T. Toupance, R. Gary Grim and A. K. Sum.