Skip to Main content Skip to Navigation
Conference papers

Etude de la chimie de l'eau en présence d'ions dans des silices nanoporeuses

Abstract : Prediction of material behaviors regarding their interactions with water is interesting for geochemistry and requires the use of modelling. Thermodynamic models and rate laws integrated in computer programs (PHREEQC, JChess…) used to predict materials dissolution kinetics and phase transformation integrate data obtained from experiments performed in diluted media. Due to the fact that most of the materials in these domains are nanoporous filled with water and ions (clay materials, secondary minerals formed from rocks, alteration layer of glasses…) and the validity of these models and rate laws are still not proven yet, thus, prediction can be defective.1 The strong interaction between water and the surface in confined media are not considered in such calculations. Furthermore, it is also expected that nanoconfined water molecules are strongly influenced by the presence of ions through sorption processes at the surface. The ions ability to be solvated also modifiy the electrostatic interactions in the system. These are really important since it strongly impacts the hydrolysis rate of materials
Complete list of metadatas

Cited literature [5 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/hal-02441908
Contributor : Amplexor Amplexor <>
Submitted on : Thursday, February 27, 2020 - 9:30:55 AM
Last modification on : Tuesday, April 28, 2020 - 11:28:16 AM
Long-term archiving on: : Thursday, May 28, 2020 - 12:26:23 PM

File

201600001927.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02441908, version 1

Collections

CEA | DEN

Citation

Markus Baum. Etude de la chimie de l'eau en présence d'ions dans des silices nanoporeuses. Journées scientifiques de Marcoule 2016, Jun 2016, Bagnols sur cèze, France. ⟨hal-02441908⟩

Share

Metrics

Record views

16

Files downloads

14