Fig. 6: RWGS mechanism and reactive intermediates study of the 15CuCe catalyst.

a The CO₂ dissociation experiment of the 15CuCe catalyst; b TPSR results of the 15CuCe catalyst; c‒d In situ diffused reflectance infrared Fourier transform spectroscopy (DRIFTS) spectra of 15CuCe catalyst during CO₂ treatment and reaction conditions at 300 °C, respectively.