Study on performance of transition metal-doped catalysts for DeNOx at low-temperature
Mn-Ce based catalysts doped with transition metal were synthesized via a sol-gel method for low-temperature Selective catalytic reduction DeNOx.NOx conversion of these catalysts was evaluated under 100 ℃-300 ℃.H2-Temperature Programmed Reduction was used to investigate the reduction capability effect on NOx conversion.On this basis, sulfur resistance of catalysts was analyzed and Fourier Transform Infrared (FI-IR) spectra were used to discuss sulfur poisoning mechanism of catalysts.The results indicated that NOx conversion of catalysts was Mn-Ce-W0.03 ≈ Mn-Ce-Y0.03 > Mn-Ce-Zr0.03 > Mn-Ce >Mn-Ce-La0.03 > Mn-Ce-Pr0.03.W, Zr, Y elements was doped to improve catalytic activity at low-temperature and enhance anti-sulfur ability of catalysts.Especially, W element can restrain sulfate formation and reduce the channel blocking of the catalyst and Mn-Ce-W0.03 catalyst displays optimal performance of resistance to sulfur poisoning.
Selective Catalytic Reduction DeNOx Low-temperature Mn-based catalyst Sulfur Resistance
QIAO Jin Shuo ZHANG Cui Ya YIN Xiao Ju SUN Ke Ning
Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technolygy, Heilongjiang,
国际会议
The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)
哈尔滨
英文
612-618
2013-08-23（万方平台首次上网日期，不代表论文的发表时间）