Simulation of gas solid interaction kinetics

in La2O3-H2O-CO2 system


B. Bakiz1, 2, M. Arab1, L. Bourja1, 2, F. Guinneton1, A. Benlhachemi2*, J.-R. Gavarri1*

1 Institut Matériaux Microélectronique & Nanosciences de Provence, UMR CNRS 6242, Université du SUD Toulon-Var,

B.P 20132, 83957 La Garde, Cedex, France

2 Laboratoire Matériaux et Environnement, Faculté des Sciences, Université Ibn Zohr, B.P 8106, 80000, Agadir, Maroc

* Corresponding author: E-mail: /

Received: 16 March 2010; revised version accepted: 02 November 2010



    Three polycrystalline phases of lanthanum hydroxycarbonate (LHC), lanthanum dioxycarbonate (LOC) and lanthanum oxide (L) are subjected to air-CH4 and air-CO flows at variable temperatures and as a function of time. The conversions of CH4 and CO into CO2 are analyzed by Fourier Transform Infrared spectroscopy.  The intensity variations of CO2 absorption bands are then simulated making use of a model describing the solid gas interaction mechanisms.


Keywords: Lanthanum hydroxycarbonate; Lanthanum dioxycarbonate; Lanthanum oxide; Infrared spectroscopy; Gas solid interactions; Modeling approach.

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