Transformation of CH4 and CO2 over Cu-FER zeolites - replication data

This investigation emphasizes the efficacy of Cu-FER catalysts with varying copper loadings in the conversion of carbon dioxide (CO2) and methane (CH4) into methanol or acetic acid. The high fraction of isolated Cu2+cations in Cu-FER catalysts with low copper loading was confirmed by XAS, UV-Vis, and FTIR analyses. Conversely, those with high copper loading have a substantial presence of Cu oxo-species. Bare Cu(II) cations, in conjunction with Brønsted acid sites, facilitate the conversion of CO2 and CH4 into acetic acid through coupled oxidation and carbonylation reactions, as demonstrated by operando investigations (FTIR and mass spectrometry). Conversely, the formation of methanol is facilitated by the dominance of Cu oxo species and the absence of Brønsted acid sites in high-loaded Cu-FER.