Nanogold supported on manganese oxide doped alumina microspheres as a highly active and selective catalyst for CO oxidation in a H 2 -rich stream

Manganese oxide-doped Al 2 O 3 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 H 2 -rich stream, but also shows excellent stability in the co-presence of H 2 O and CO 2 at 80 °C.