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考察了担载在活性炭上的以铜、铁为主的复合催化剂对一氧化氮催化解离还原活性的影响,并通过TPR和XRD研究了不同金属组份配比和不同助剂(K、Na)对催化剂性能的影响。结果表明,通过选择不同催化剂配比和添加不同助剂,降低主催化剂在载体炭上的还原温度和提高主催化剂在载体炭上的分散度,将有利于提高催化剂对一氧化氮催化解离还原的活性。文中还采用电镜方法研究了不同组成复合催化剂的金属颗粒大小和Cu、Fe复合催化剂经反应后其表面的形貌结构,发现在这种炭载型复合催化剂上进行一氧化氮催化解离还原反应的过程中,有催化剂表面金属颗粒迁移、生成炭丝和金属颗粒在载体炭上打洞等迹象。
The effects of copper and iron-based composite catalysts supported on activated carbon on the catalytic dissociation and reduction activity of nitric oxide were investigated. The effects of different metal components and different promoters (K, Na ) On the catalyst performance. The results showed that reducing the reduction temperature of the main catalyst on the support carbon and increasing the dispersion of the main catalyst on the support carbon would be beneficial to improve the catalytic reduction of the catalyst to nitric oxide by selecting different catalyst ratios and adding different auxiliary agents Activity. In this paper, the electron microscopic method was also used to study the size distribution of the metal particles and the morphology of Cu and Fe composite catalysts on the surface of the composite catalyst. The catalytic reduction and dissociation of nitric oxide Of the process, the catalyst surface of the metal particles migrate to generate charcoal and metal particles on the carrier carbon holes and other signs.