46results about How to "High decomposition activity" patented technology

A catalyst for decomposing organic halides is characterized by comprising water-insoluble vanadyl sulfate or a composite catalyst comprising vanadyl sulfate, a specific oxide and a specific sulfate. This catalyst not only has excellent activity in decomposing organic halides, durability and resistance to SO2, but basically does not cause the oxidation of SO2 to SO3, and is also resistant to HCl, so it can be used for organic halides. The decomposition process has good efficiency and good durability, especially when dust and organic halides exist together, the gas to be treated contains SOx or HCl, or SOx or HCl is generated in the area to be treated.

Disclosed is an ammonia decomposition catalyst which is obtained by subjecting a complex to a heat treatment at a temperature of 360-900 DEG C in a reducing atmosphere, said complex being obtained by coordinating a transition metal to a polymer that is represented by formula (I) and has a molecular weight of 1,000-500,000, and adding activated carbon or a carbon nanotube to the polymer. In the case when a carbon nanotube is added, an alkali metal compound or an alkaline earth metal compound is added to the heat-treated complex. In formula (I), R1 represents H or a hydrocarbon group having 1-10 carbon atoms; R2 and R3 each represents H, a halogen, a nitro group, an acyl group, an ester group, a carboxyl group, a formyl group, a nitrile group, a sulfone group, an aryl group or an alkyl group having 1-15 carbon atoms; X and Y each represents H or OH; Z represents CH or N; R4 and R5 each represents H, OH, an ether group, an amino group, an aryl group or an alkyl group having 1-15 carbon atoms; x represents a real number between 1 and 2; y represents a real number between 1 and 3; and n represents a real number between 2 and 120. The ammonia decomposition catalyst is capable of increasing the amount of transition metal loaded thereon without lowering the dispersion of the transition metal, and is capable of reducing the use amount of catalyst necessary for obtaining desired activity.

A composite nano-photocatalyst for cleaning air is composed of anatase-type TiO2, and the (15-25)-nm Fe2O3 and V2O5. It can effectively decompose the formaldehyde, benzene and ammonia in air under irradiation of light.