Effect of Ce/Zr Composition on Structure and Properties of Ce_1-xZr_xO₂ Oxides and Related Ni/Ce_1-xZr_xO₂ Catalysts for CO₂ Methanation.

ABSTRACT: Ce_1-xZr_xO₂ oxides (x = 0.1, 0.25, 0.5) prepared via the Pechini route were investigated using XRD analysis, N₂ physisorption, TEM, and TPR in combination with density functional theory calculations. The Ni/Ce_1-xZr_xO₂ catalysts were characterized via XRD analysis, SEM-EDX, TEM-EDX, and CO chemisorption and tested in carbon dioxide methanation. The obtained Ce_1-xZr_xO₂ materials were single-phase solid solutions. The increase in Zr content intensified crystal structure strains and favored the reducibility of the Ce_1-xZr_xO₂ oxides but strongly affected their microstructure. The catalytic activity of the Ni/Ce_1-xZr_xO₂ cat

SUBMITTER: Pakharukova VP 

PROVIDER: S-EPMC9500888 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature