CO₂ methanation over Ni/SiO₂-Al₂O₃ catalysts: effect of Ba, La, and Ce addition.

ABSTRACT: One of the most technologically and financially feasible methods for managing anthropogenic CO₂ emissions is CO₂ hydrogenation to methane. However, the high efficiency of mostly used nickel-based catalysts is still a challenge in the CO₂ methanation process. Herein, 10% silica-90% alumina, commercially known as SIRAL-10, was used as a support for nanostructured Ni catalysts. Modified SIRAL-supported nickel catalysts (Ni/SA) with Ba, La, and Ce metals as promoters were prepared by a simple wet impregnation method. These catalysts were tested for atmospheric CO₂ methanation reaction in a 250-500 °C temperature range in a tubular fixed bed reactor with a H₂/CO₂ molar ratio of 4. As prepared samples were characterized by X-ray d

SUBMITTER: Usman M 

PROVIDER: S-EPMC11975277 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature