Hydrotalcite like compounds containing Co, Al and Ce are synthesized by co-precipitation method. The mixed oxides issued from calcination step, have been characterized and tested for the toluene total oxidation with various concentrations of toluene and oxygen. The toluene conversion curves have been modelled in this paper with eight models. The Mars Van Krevelen mechanism shows the best accordance with the experimental data. Moreover, the determination of the Co₃O₄-CeO₂ interface as the active center has been performed with the experimental observations. The Co₃O₄ allows obtaining high catalytic activity, and the CeO₂ permits increasing the reoxidation of the Co₃O₄ to perform a new catalytic cycle.

通过共沉淀法合成含有Co，Al和Ce的水滑石状化合物。已经表征和测试了由煅烧步骤产生的混合氧化物，以各种浓度的甲苯和氧气对甲苯进行总氧化。本文利用八种模型对甲苯转化曲线进行了建模。火星Van Krevelen机制与实验数据显示出最佳的一致性。而且，已经通过实验观察确定了作为活性中心的Co ₃ O ₄ -CeO ₂界面。Co ₃ O ₄可以实现高催化活性，而CeO ₂可以提高Co ₃的再氧化O ₄执行新的催化循环。