A Novel Coprecipitation Path to a High-Performing Ni/MgO Catalyst for Carbon Dioxide Methanation.

ABSTRACT: The novel crystalline bimetallic single-source precursor (Ni_1-xMg_x)₁₂(CO₃)₈(OH)₆O · y H₂O with x = 0-0.5 can be converted into a highly active Ni/MgO CO₂ methanation catalyst. All stages of preparation, namely, coprecipitation, crystallization, calcination, and reduction, as well as the spent catalysts have been comprehensively analyzed using powder X-ray diffraction, physisorption, transmission electron microscopy, and other techniques. The scalable synthesis allows attaining unusually high surface areas around 230 m² g^-1 for the calcined precatalyst Ni_1-xMg_xO. During reduction, this oxide solid solution separates into metallic Ni and Ni-depleted oxide to for

SUBMITTER: Wolf A 

PROVIDER: S-EPMC12665882 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature