Ni-based catalysts generated by in situ reduction of MNiO_x (M: La, Sr and Ce) were investigated in the methane Oxy-CO₂ reforming reaction. The precursors and catalysts were characterized by X-ray diffraction, Thermoprogrammed Reduction and Oxidation – TPR/TPO, Superficial Thermoprogrammed Reaction – TPSR, High-Resolution transmission electron microscopy and Raman spectroscopy. The addition of strontium gave rise to a less active catalyst, due to the formation of SrCO₃, whose presence blocks the reactants access to the nickel active sites. It was found that the replacement of lanthanum with cerium led to an increase in the overall activity of the catalysts, favoring the breakdown of the C–H bond, and suggesting a mechanism of coke oxidation by the lattice oxygen.

在甲烷Oxy-CO ₂重整反应中研究了通过原位还原MNiO _x（M：La，Sr和Ce）生成的Ni基催化剂。通过X射线衍射，热程序还原和氧化– TPR / TPO，表面热程序反应– TPSR，高分辨率透射电子显微镜和拉曼光谱对前驱物和催化剂进行了表征。由于形成了SrCO ₃，锶的添加导致活性较低的催化剂，其存在阻止了反应物进入镍活性位。发现用铈代替镧导致催化剂的整体活性增加，有利于C–H键的分解，并暗示了晶格氧引起的焦炭氧化机理。