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Solvatation supercritique de métaux précieux : apports de la simulation moléculaire.

Abstract : Despite the vast economic interest it attracts, precious metal transport through hydrothermal fluids is still not well understood, and crucially depends on the species present in solution. In this thesis, we use ab initio molecular dynamics to study the solvation of gold and silver as monovalent ions. After studying the correction of dispersion forces necessary to model water, the most common geological solvent, we have dedicated ourselves to modelling of hydrothermal fluids, gradually increasing the system's complexity. Thus, we could characterise H2O/CO2 systems in supercritical conditions, identify new complexes and interpret experimental EXAFS signals by studying gold hydrosulphide and silver chloride complexes; and finally observe how CO2 influences the solvation of our metallic ions.
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https://tel.archives-ouvertes.fr/tel-00910302
Contributor : Romain Jonchiere <>
Submitted on : Wednesday, November 27, 2013 - 5:20:55 PM
Last modification on : Thursday, October 29, 2020 - 3:01:52 PM
Long-term archiving on: : Friday, February 28, 2014 - 10:25:10 AM

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  • HAL Id : tel-00910302, version 1

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Romain Jonchiere. Solvatation supercritique de métaux précieux : apports de la simulation moléculaire.. Chimie théorique et/ou physique. Université Pierre et Marie Curie - Paris VI, 2013. Français. ⟨tel-00910302⟩

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