Improved activity and stability in CO oxidation of bimetallic Au-Cu/TiO2 catalysts prepared by deposition-precipitation with urea

Au-Cu bimetallic catalysts supported on TiO2 were prepared by sequential deposition-precipitation with urea method. Au0 is in interaction with CuO supported of titania after calcination and Au-Cu bimetallic particles are formed after reduction in hydrogen. The activation in air produced more active catalysts than the activation in hydrogen.