The present invention relates to a catalyst of a
metal oxide compound used for organic
exhaust gas purification, and a preparation method for the catalyst. The catalyst uses the
cordierite honeycomb ceramic intensively pretreated with the
nitric acid as a carrier, and an active aluminum
oxide coating modified by a
mixed oxide of
cerium,
lanthanum and
zirconium, and an
active component comprising a plurality of metallic
oxide mixtures are loaded on the carrier in a lump. For the catalyst preparation method, heat treatment is conducted on the carrier with the
nitric acid, the concentration of which is 5 to 15 percent; after a specific surface area of the carrier is increased, the
coating, which comprises and is loaded with the
mixed oxide active component, is immersed in a lump. The catalyst is provided with the large specific surface area. The
active component is a
transition metal oxide mixture, which comprises no
noble metal. Moreover, the catalyst is provided with the excellent performance and the low cost, and can be spread and applied easily. The catalyst is provided with the high
catalytic combustion efficiency for the organic
exhaust gas comprising
benzene,
toluene, dimethybenzene,
polycyclic aromatic hydrocarbon and so on, and the ignition temperature is low. Thus, the catalyst is widely applicable for purification of the industrial organic
exhaust gas. The technique of one-time immersion,
drying and
calcination is adopted, so the manufacture equipment needed is simple.