Revealing Active Sites and Reaction Pathways in Direct Oxidation of Methane over Fe-Containing CHA Zeolites Affected by the Al Arrangement.

ABSTRACT: Fe-containing zeolites are effective catalysts in converting the greenhouse gases CH₄ and N₂O into valuable chemicals. However, the activities of Fe-containing zeolites in methane conversion and N₂O decomposition are frequently conflated, and the activities of different Fe species are still controversial. Herein, Fe-containing aluminosilicate CHA zeolites with Fe species at different spatial distances affected by the arrangement of framework Al atoms were synthesized in a one-pot manner in the presence or absence of Na. The arrangement of framework Al atoms was identified by ²⁷Al and ²⁹Si MAS NMR spectra and thermogravimetry-differential thermal analysis (TG-DTA) curves. Ultraviolet (UV)-vis, X-ray absorption spectroscopy (XAS), and NO

SUBMITTER: Xiao P 

PROVIDER: S-EPMC11583304 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature