School of Energy and Environment, Anhui University of Technology, Maanshan, 243002, Anhui, People's Republic of China.
Key Laboratory of Metallurgical Emission Reduction and Resources Recycling, Ministry of Education, Anhui University of Technology, Maanshan, 243002, Anhui, People's Republic of China.
Environ Sci Pollut Res Int. 2017 Nov;24(31):24584-24592. doi: 10.1007/s11356-017-0122-z. Epub 2017 Sep 14.
Different types of manganese ore raw materials were prepared for use as catalysts, and the effects of different manganese ore raw materials and calcination temperature on the NO conversion were analyzed. The catalysts were characterized by XRF, XRD, BET, XPS, H-TPR, NH-TPD, and SEM techniques. The results showed that the NO conversion of calcined manganese ore with a Mn:Fe:Al:Si ratio of 1.51:1.26:0.34:1 at 450 °C reached 80% at 120 °C and 98% at 180~240 °C. The suitable proportions and better dispersibility of active ingredients, larger BET surface area, good reductibility, a lot of acid sites, contents of Mn and Fe, and surface-adsorbed oxygen played important roles in improving the NO conversion.
分别采用不同类型的锰矿原料制备催化剂，分析了不同锰矿原料和煅烧温度对 NO 转化率的影响。采用 XRF、XRD、BET、XPS、H-TPR、NH-TPD 和 SEM 技术对催化剂进行了表征。结果表明，当 Mn:Fe:Al:Si 摩尔比为 1.51:1.26:0.34:1 的煅烧锰矿在 450℃下煅烧时，在 120℃时 NO 转化率达到 80%，在 180~240℃时达到 98%。合适的比例和更好的分散性的活性成分、更大的 BET 表面积、良好的还原性能、大量的酸位、Mn 和 Fe 的含量以及表面吸附氧在提高 NO 转化率方面发挥了重要作用。
