Abstract: The present invention relates to a catalyst for removing aromatic halogenated compounds comprising dioxin, carbon monoxide and nitrogen oxide simultaneously and a method for preparing the catalyst, more particularly, a catalyst comprising 0.1 to 5% by weight of vanadium, 1 to 12% by weight of metals in 6A family and 0.1 to 10% by weight of Ag in titania carrier or, alternatively, a catalyst produced by impregnating said catalyst in 0.05 to 1M sulfuric acid solution to carry out acid treatment. The catalyst according to the present invention has improved efficiency for removing 1,2-dichlorobenzene as a reactant model of dioxin and carbon monoxide rather than existing catalysts and also, alternative efficiency for removing nitrogen oxide substantially equal to commonly known catalysts, so that the catalyst can effectively control various air pollutants contained in exhaust gas.

Abstract: Disclosed herein is an adsorbent for removing mercury, which comprises sulfided iron compounds containing oxygen. In the adsorbent, iron compounds containing oxygen are sulfided to accumulate sulfur therein, thereby removing gaseous mercury.

Abstract: Disclosed is a method of effectively removing nitrogen oxides contained in an exhaust gas from a combustion process with a stationary source and/or a mobile source using gases or liquid oils as a fuel, such as gasoline, kerosene and bio-diesel oil. More particularly, provided are an apparatus and a method of removing nitrogen oxides, in which a reducing agent is sprayed into the exhaust gas passing through an alumina-promoted silver catalyst installed at the flow path of the exhaust gas.

Abstract: Disclosed are an apparatus and a method for treating exhaust gas. The apparatus includes a pipe (2) for providing a flow path of the exhaust gas containing nitrogen dioxide from a stationary source combustion process using gases as a fuel. One or more nozzles (4) are installed in the pipe (2), which can spray air and a reducing or an oxidizing agent to the exhaust gas flowing in the pipe (2). Additionally, a storage tank (6) is installed to store the reducing or oxidizing agent therein. Furthermore, an injection pump (8) is connected to the storage tank (6) and nozzle (4) at a position between the storage tank (6) and nozzle (4) to feed the reducing or oxidizing agent from the storage tank (6) to the nozzle (4), and an air pump (10) is connected to the nozzle (4) to feed the air into the pipe (2).

Abstract: The present invention relates to a catalyst for removing aromatic halogenated compounds comprising dioxin, carbon monoxide and nitrogen oxide simultaneously and a method for preparing the catalyst, more particularly, a catalyst comprising 0.1 to 5% by weight of vanadium, 1 to 12% by weight of metals in 6A family and 0.1 to 10% by weight of Ag in titania carrier or, alternatively, a catalyst produced by impregnating said catalyst in 0.05 to 1M sulfuric acid solution to carry out acid treatment.

Abstract: There are disclosed a fibrous zeolite ZSM-5 and a preparation method thereof. The fibrous zeolite ZSM-5 which is represented by xSiO.sub.2 (1-x)Al.sub.2 O.sub.3 (x is 0.9429.about.0.9943) can be directly used as a reinforcement material because of its fibrous form, and has sufficient sites on which other substances can be easily adsorbed and from which the adsorbed substances can be easily desorbed. Also, the fibrous zeolite can be applied to an optical material due to its transparent property.

Abstract: There are disclosed a fibrous zeolite and a preparation method thereof wherein the fibrous zeolite, represented as xTiO.sub.2.(1-x)SiO.sub.2 (x is 0.02.about.0.1), which is easy to adsorb and desorb, and is easy to use as a functional material, and can be directly used as a reinforcement material.