- Complex metal oxides catalyst based multi-component ceria-zirconia for removal of volatile organic compounds and the preparation method thereof

摘要

The present invention provides a composite metal oxide catalyst for removing volatile organic compounds which comprises a composite metal oxide of cerium (Ce), zirconium (Zr), copper (Cu), and metal (M), wherein the metal (M) is selected from the group consisting of manganese (Mn), cobalt (Co), titanium (Ti), zinc (Zn), tin (Sn), indium (In), chromium (Cr), iron (Fe), and nickel (Ni). According to the present invention, a composite metal oxide catalyst for removing volatile organic compounds has effects of being economically efficient compared to a conventional precious metal catalyst, being thermally stable, and effectively removing volatile organic compounds at low temperatures compared to conventional metal catalysts as the catalyst comprises cerium, zirconium, and two transition metals which are copper (Cu) and a composite oxide of transition metal (M) other than copper. Conventional ceria-zirconia metal oxide catalysts or commercialized transition metal oxide catalysts have been ineffective in removing volatile organic compounds at low temperatures below 200 C. However, the composite metal oxide catalyst for removing volatile organic compounds according to the present invention has an excellent effect of removing volatile organic compounds at low temperatures without containing the precious metals.