How Ti Doping Improves the Catalytic Methane Dry Reforming of Nanoporous Reduced LaNiO₃ Perovskites.

ABSTRACT: We studied the effect of Ti substitution on nickel B-sites in LaNiO₃ to unravel the influence of Ti doping on structural stability, Ni exsolution, and methane dry reforming (DRM) properties. Ni can be substituted by Ti down to compositions of x_Ni = 0.25 without compromising both phase and structure purity. At even higher Ti doping levels, formation of the pyrochlore-type La₂Ti₂O₇ phase occurs. Ti substitution has a significant influence on the stability under reducing conditions and the appearance of specific intermediate structures relevant for DRM operation. Full decomposition is only observed for LaNiO₃ and the x_Ni = 0.75 sample, which yield the La₂O₃ phase relevant for DRM activity at low

SUBMITTER: Winterstein TF 

PROVIDER: S-EPMC12645428 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature