Catalytic Oxidation of Nitric Oxide over Mn–Fe Metal Oxides Catalysts

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Chi Wang¹  Ping Ning¹  Zhiqing Ye¹  Kai Li¹  Xiaolong Tang¹  Honghong Yi¹ 

[1] Faculty of Environmental Science and Engineering, Kunming University of Science and Technology

关键词: Mn–Fe Metal Oxides;    Nitric Oxide;    Catalytic Oxidation;    Preparation Condition;    Orthogonal Test;   

DOI  :  10.1252/jcej.13we286

来源: Maruzen Company Ltd

【 摘 要 】

References(13)A series of manganese–ferrum oxides (Mn–Fe) catalysts were prepared by organic solvent method and tested for low temperature catalytic oxidation of nitric oxide (NO). The effects of doping of PEG1000 and Fe were studied. These catalysts were characterized by X-ray diffraction (XRD) Brunauer-Emmett-teller measurements (BET) and scanning electron microscope (SEM) methods. Screening and optimization of catalysts formulation and preparation conditions could be achieved by the orthogonal tests, and the influencing law was analyzed. In this method, effects of (Mn7++Mn2+) : Fe3+, Mn7+ : Mn2+, PEG1000/(Mn7++Mn2++Fe3+), agitation temperature and calcination temperature were investigated. The experimental results showed that the best catalyst yielded 91% NO conversion at 100°C (volume fraction of NO was 500 ppm, O2 was 3%, space velocity was 45,000 h−1), and the most active catalyst was obtained with a molar PEG/(Mn7++Mn2++Fe3+) ratio of 1.0%. Orthogonal tests showed that the most obvious effect factor on NO conversion was calcination temperature. The effect order was calcination temperature>PEG1000/(Mn7++Mn2++Fe3+)>Mn7+ : Mn2+>(Mn7++Mn2+) : Fe3+>agitation temperature.

【 授权许可】

Unknown