ZnO_x overlayer confined on ZnCr₂O₄ spinel for direct syngas conversion to light olefins.

ABSTRACT: ZnCrO_x oxides coupled with zeolites (OXZEO) allow direct conversion of syngas into light olefins, while active sites in the composite oxides remain elusive. Herein, we find that ZnO particles physically mixed with ZnCr₂O₄ spinel particles can be well dispersed onto the spinel surfaces by treatment in syngas and through a reduction-evaporation-anchoring mechanism, forming monodispersed ZnO_x species with uniform thickness or dimension on ZnCr₂O₄ up to a dispersion threshold ZnO loading of 16.0 wt% (ZnCr₂O₄@ZnO_x). A linear correlation between CO conversion and surface ZnO loading clearly confirms that the ZnO_x overlayer on ZnCr₂O₄ acts as the active structure for

SUBMITTER: Feng X 

PROVIDER: S-EPMC12008371 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature