Catalytic behavior of polycrystalline barium cerate
in presence of air - methane mixtures
A. Benlhachemi1*, K. Ouzaouit 1, , , ,, ;; H. Benyaich1, S. Villain 2, J.R. Gavarri 2
1 Laboratoire LME, Faculté des Sciences, Université Ibn Zohr, BP. 8106, Cité Dakhla, 80000 Agadir. Maroc
2 Laboratoire LIM2NP ( UMR CNRS 6137), Université du Sud Toulon-Var, BP. 132, 83957
* Corresponding author. E-mail: email@example.com
Received: 22 February 2008; revised version accepted: 28 May 2008
Polycrystalline barium cerate BaCeO3 was synthesized from a sol gel method at relatively moderate temperature. Samples were characterized by X-ray diffraction and scanning electronic microscopy, the crystal parameters were refined.
FTIR spectroscopy was used to study the conversion of methane present in air-methane mixtures reacting with these powders at various temperatures. The formation rate of CO2 gas varied with time. The catalytic activity of BaCeO3 powders as a function of reaction time was characterized by a complex reactivity depending on particle sizes.
Keywords: BaCeO3; Sol-gel; Catalytic behavior; Methane; FTIR spectroscopy.