Zeolite catalyst for removing nitrogen oxides, method for preparing the same, and method of removing nitrogen oxides using the same
AssigneesHyundai Motor Company, Ordeg Co., Ltd.
InventorsJin Woo Choung, In-Sik Nam, Hyuk-Jae Kwon, Young-Jin Kim, Dae-Hwan Kang, Moon-Soon Cha
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Abstract
A zeolite catalyst for removing nitrogen oxides is provided, in which 5 to 30 wt % of manganese (Mn) and 2 to 20 wt % of iron (Fe) on the basis of the total weight of the catalyst are supported on zeolite, and a method for preparing the same, and a method for removing nitrogen oxides using the same are provided.
Claims7
A zeolite catalyst for removing nitrogen oxides, in which about 5 to about 30 wt % of manganese (Mn) and about 2 to about 20 wt % of iron (Fe) on the basis of the total weight of the catalyst are supported on zeolite by using an impregnation method.
A method for manufacturing a zeolite catalyst for removing nitrogen oxides, the method comprising the steps of:
- providing a mixture solution of manganese (Mn) and iron (Fe) such that the weight ratio of manganese (Mn) to the total weight of the catalyst is about 5 to about 30% and the weight ratio of iron (Fe) to the total weight of the catalyst is about 2 to about 20%;
- supporting the mixture solution on zeolite so that a mixture of manganese (Mn) and iron (Fe) is formed on the zeolite;
- and
- drying and sintering the supported catalyst.
A method for removing nitrogen oxides, comprising the steps of:
- mixing an exhaust gas including nitrogen oxides with a reducing agent;
- and
- passing the mixture through a catalyst reactor containing a zeolite catalyst to allow reduction reaction to be performed.
Dependencies are inferred from the claim text.