A novel Au&Pd/Fe(OH)x catalyst for CO + H2 co-oxidations at low temperatures

A novel Au&Pd/Fe(OH)x catalyst with separate Au and Pd active sites was designed and synthesized. It was found for the first time that total conversion of CO + H2 could be achieved at room temperature over this catalyst. The separate Au and Pd sites in Au&Pd/Fe(OH)x catalyst were confirmed by the XPS, XRD, 197Au Mössbauer characterizations and the activity measurements, although a small amount of Au–Pd alloy formed after the catalyst was calcined at 500 °C.

Au&Pd/Fe(OH)x catalyst with separate Au and Pd active sites was designed and successfully prepared, over which the CO oxidation occurred on Au active sites while the H2 oxidation occurred on Pd active sites, thus the co-oxidation of CO + H2 was realized at ambient temperature.Figure optionsDownload high-quality image (64 K)Download as PowerPoint slideResearch highlights
► Novel Au&Pd/Fe(OH)x bimetal catalyst with separate Au and Pd sites was fabricated.
► CO oxidation over Au sites and H2 oxidation over Pd sites was achieved.
► It is thereby highly active for co-oxidation of CO + H2 at ambient temperatures.