Nanogold supported on manganese oxide doped alumina microspheres as a highly active and selective catalyst for CO oxidation in a H2-rich stream.

Manganese oxide-doped Al2O3 microspheres were synthesized via a redox method, and were then deposited with Au nanoparticles using a deposition-precipitation method. The obtained catalyst is not only highly active and selective for the preferential oxidation of CO in a H2-rich stream, but also shows excellent stability in the co-presence of H2O and CO2 at 80 °C.