Core-shell Ni/SiO₂@ZrO₂ catalyst for highly selective CO₂ conversion accompanied by enhancing reaction stability.

ABSTRACT: CO₂ RWGS reaction was considered to be a promising process for carbon dioxide conversion, however it retained a big challenge owing to methanation and metal sintering. Therefore, it was desperately needed to devise highly selective and stable catalyst. Herein, core-shell Ni/SiO₂@ZrO₂ catalyst was successfully prepared via a combination of the wet impregnation and in-situ hydrothermal synthesis method, with ZrO₂ as the coating shell. The optimized Ni/SiO₂@4ZrO₂ catalyst possessed enhanced metal-support interaction and rich oxygen vacancies as well as abundant medium-strength CO₂ adsorption sites. As a result, under the GHSV of 120000 mL/g·h and 150000 mL/g·h, Ni/SiO₂@4ZrO₂ displayed a consider

SUBMITTER: Cui S 

PROVIDER: S-EPMC11648145 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature