Fariba Fazeli - Malek Ashtar University, Tehran, Iran وEngineering Research Institute of Jahad-Agriculture Ministry, Tehran, Iran
Shahram Ghanbari Pakdehi - Malek Ashtar University, Tehran, Iran

Bulk gold is chemically inert and is generally regarded as a poor catalyst. However, when gold is in very small particles with diameters below 10nm and is deposited on metal oxides or activated carbon, it becomes surprisingly active, especially at low temperatures, for many reactions in chemical processing, environmental and automotive pollution control. Of the many important reactions that are known to be catalysed by gold particles supported on transition metal oxides, the oxidation of carbon monoxide is of outstanding significance.

gold nanoparticles, catalyst, pollution control, CO oxidation