Preparation method of NOx adsorbent operated at room temperature
An adsorbent and room temperature technology, applied in the direction of separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low-concentration NOx adsorption and removal, and achieve the effect of not being easy to heat and spontaneously ignite and having good thermal stability
Active Publication Date: 2014-04-23
INST OF PROCESS ENG CHINESE ACAD OF SCI
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The invention relates to a preparation method of a NOx adsorbent operated at a room temperature, and belongs to the technical fields of material preparation, environmental purification and waste gas treatment. The method comprises the following steps: with manganese (or cobalt) and cerium as main catalytic oxidation components and activated carbon as a NOx absorbing component, performing an impregnation method to obtain an activated carbon material carried with manganese (or cobalt) and cerium; and firing the activated carbon material under the atmosphere of inert gases, thereby obtaining an adsorbing material capable of effectively absorbing the NOx in the air at the room temperature. Thus, the NOx adsorbent provided by the invention has good application prospects in air purification of special environments such as plants in which the NOx and HN03 are operated, highway tunnels and central air-conditioners of contaminated regions.
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