Diving into the CO _<i>x</i> Methanation Mechanism of CO and CO₂ Mixtures Catalyzed by the Nanostructured NiO-CeO₂ Catalyst.

ABSTRACT: The CO₂ methanation process in the presence of CO is a catalytic challenge toward the abatement of CO₂ emissions from industrial exhaust gases with the goal of producing CH₄ as a clean fuel. Herein, the CO _x methanation mechanisms of a NiO-CeO₂ (Np) catalyst constituted by nickel oxide-cerium oxide nanoparticles with efficient operation under CO₂ and CO + CO₂ gas mixtures were addressed. In situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS) analyses and ¹³C¹⁸O₂ (49) pulse isotopic experiments reveal that solo CO₂ methanation and comethanation (CO + CO₂) present a common mechanism in which CO₂ is transformed into *CO, fr

SUBMITTER: Martinez-Lopez I 

PROVIDER: S-EPMC12281476 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature