Insights into the essential roles of tin and chloride species within Cu–CeO2 based catalysts for CO preferential oxidation in H2-rich stream

Sn modified Cu–Ce catalysts have been synthesized by the solvent-free combustion method for preferential oxidation of CO in H2-rich stream (CO-PROX) and characterized by N2 adsorption-desorption (BET), H2 temperature-programmed reduction (H2-TPR), X-ray diffraction (XRD), Raman, in-situ DRIFTS, X-ray photoelectron spectroscopy (XPS), and Oxygen storage capacity (OSC). The results show that the incorporation of Sn species accelerates the redox...