Highly efficient Ni/Ac-Al₂O₃ catalysts in the dry reforming of methane: influence of acetic acid treatment and Ni loading.

ABSTRACT: The presence of abundant hydroxyl groups on the surface of Al₂O₃ can promote the dispersion of Ni species but produce an inactive NiAl₂O₄ phase at high temperatures. Moreover, the catalysts prepared by the conventional incipient wetness impregnation method lack the sites for the activation of CO₂, which leads to coke deposition and thus affects the catalyst activity. The above restricts the utilization of Ni in conventional Ni/Al₂O₃ catalysts. In this paper, Al₂O₃ support was pre-treated by acetic acid to selectively remove hydroxyl groups without affecting the coordination environment of Al. Results revealed that the Al₂O₃ support after hydroxyl removal not only showed

SUBMITTER: Xiao H 

PROVIDER: S-EPMC11629874 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature