Composite composition for harmful gas removal containing copper-manganese catalyst
This invention relates to a composite composition for harmful gas removal containing a copper-manganese catalyst, which is capable of removing ambient and indoor pollutants, such as carbon monoxide and volatile organic compounds, the composite composition including a copper-manganese composite catalyst hybridized with an inorganic layer compound, an inorganic filler, activated carbon, and a binder.
1. A composition for harmful gas removal, comprising:
0.5 to 90 wt % of a composite of copper-manganese oxides with an inorganic layer compound being smectite clay selected from the group consisting of montmorillonite, bentonite, hectorite, saponite, beidellite, nontronite, Laponite, Smecton, leucitite, and swellable mica,
wherein the composite is obtained by mixing 100 parts by weight of the inorganic layer compound with 120 to 180 parts by weight of potassium permanganate, 300 to 400 parts by weight of manganese acetate, and 100 to 150 parts by weight of copper acetate;
5 to 99 wt % of a porous inorganic filler;
0.1 to 50 wt % of activated carbon; and
0.02 to 10 wt % of a binder,
wherein the binder is at least one of an inorganic binder and an organic binder,
wherein the inorganic binder is at least one selected from the group consisting of colloidal silica, titania, zirconia, water glass and alumina sol,
wherein the organic binder is at least one selected from the group consisting of methyl cellulose, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, hydroxyethylmethyl cellulose, methylethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, polyvinyl alcohol, polyethylene glycol, polyacrylic acid and polymethyl methacrylate.
2. The composition of claim 1 , wherein the porous inorganic filler is at least one selected from the group consisting of porous silica, alumina, titania, pearlite, and kaolin.
3. The composition of claim 1 , wherein the organic binder is contained in an amount of 5 wt % or less based on a total amount of the binder.
4. The composition of claim 1 , wherein the composition has a density of 0.3 - 1.0 g/cm 3 , a specific surface area of 300-800 m 2 /g, and a total pore volume (porosity) of 0.3-1.0 cm 3 /g determined by nitrogen adsorption-desorption isothermic analysis.