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Finding a robust catalytic system for hydrogen production via dry reforming of methane (DRM) remains a challenge. Herein, MNi 0.9 Zr 1−x Y x O 3 (M = Ce, La, and La 0.6 Ce 0.4 ; x = 0.00, 0.05, 0.07, and 0.09) catalyst was prepared by the sol-gel method, tested for DRM and characterized by surface area and porosity, X-ray diffraction, H 2 -temperature programmed reduction, thermogravimetry, and transmission electron microscopy. In La 0.6 Ce 0.4 NiO 3 catalyst, the substitution of Ni by 0.1% Zr results in a constant high catalytic activity (83% hydrogen yield at 800°C) due to the presence of reducible "NiO-species interacted strongly with the support" (stable metallic Ni over reduced catalyst) and redox input by ceria phase for laying instant lattice oxygen during lag-off period of CO 2 . Substitution of Ni by Zr and Y in the CeNiO 3 catalyst system nurtures Ni 3 Y (providing highly stable metallic Ni for CH 4 decomposition) and cerium yttrium oxide phases (providing strong redox input). CeNi 0.9 Zr 0.01 Y 0.09 O 3 shows 85% H 2 yield at 800°C.

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