A novel Au&Pd/Fe(OH)_x catalyst for CO + H_2 co-oxidations at low temperatures

摘要

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 + H_2 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, ~(197)Au M?ssbauer characterizations and the activity measurements, although a small amount of Au-Pd alloy formed after the catalyst was calcined at 500 °C.