Atomic-Scale Insights into Nickel Exsolution on LaNiO₃ Catalysts via In Situ Electron Microscopy.

ABSTRACT: Using a combination of in situ bulk and surface characterization techniques, we provide atomic-scale insight into the complex surface and bulk dynamics of a LaNiO₃ perovskite material during heating in vacuo. Driven by the outstanding activity LaNiO₃ in the methane dry reforming reaction (DRM), attributable to the decomposition of LaNiO₃ during DRM operation into a Ni//La₂O₃ composite, we reveal the Ni exsolution dynamics both on a local and global scale by in situ electron microscopy, in situ X-ray diffraction and in situ X-ray photoelectron spectroscopy. To reduce the complexity and disentangle thermal from self-activation and reaction-induced effects, we embarked on a he

SUBMITTER: Cao P 

PROVIDER: S-EPMC8762657 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature