Using the catalyst powder of rare earth tailings activated by sulfuric acid as raw material,a mono-lithic catalyst was prepared by adding additives and integral extrusion,and then characterized and analyzed by XRD,BET,XPS,and H2-TPR.In addition,its catalytic denitration reaction activity and N2 selectivity were tested on a denitration activity test platform to determine the suitable roasting system of the catalyst.The results show that the strip-shaped catalyst roasted at 350 ℃ presents the best catalytic denitration ac-tivity and the largest specific surface area.The XPS spectral peak of its Fe2p orbital shifts towards high binding energy,indicating a significant Fe-Ce synergistic effect.At this roasting temperature,a honeycomb-shaped catalyst with a denitration efficiency of 81％and high N2 selectivity can be prepared,and its me-chanical strength meets the national standard for the monolithic catalysts.
维普
万方数据