NO oxidation over Co-La catalysts and NO x reduction in compact SCR

  • Tiejun Zhang
  • Jian Li
  • Hong He
  • Qianqian Song
  • Quanming Liang
Research Article


A series of Co-La catalysts were prepared using the wet impregnation method and the synthesis of catalysts were modified by controlling pH with the addition of ammonium hydroxide or oxalic solution. All the catalysts were systematically investigated for NO oxidation and SO2 resistance in a fixed bed reactor and were characterized by Brunanuer–Emmett–Teller (BET) method, Fourier Transform infrared spectroscopy (FTIR), X–ray diffraction (XRD), Thermogravimetric (TG) and Ion Chromatography (IC). Among the catalysts, the one synthesized at pH = 1 exhibited the maximum NO conversion of 43% at 180°C. The activity of the catalyst was significantly suppressed by the existence of SO2 (300 ppm) at 220°C. Deactivation may have been associated with the generation of cobalt sulfate, and the SO2 adsorption quantity of the catalyst might also have effected sulfur resistance. In the case of the compact selective catalytic reduction (SCR), the activity increased from 74% to 91% at the highest gas hourly space velocity (GHSV) of 300000 h–1 when the NO catalyst maintained the highest activity, in excess of 50% more than that of the standard SCR.


NO catalytic oxidation pH effect Low temperature Sulfur dioxide High space velocity SCR 


  1. 1.
    Jin Y Y, Li Y Y, Liu F Q. Combustion effects and emission characteristics of SO2, CO, NOx and heavy metals during cocombustion of coal and dewatered sludge. Frontiers of Environmental Science & Engineering, 2016, 10(1): 201–210CrossRefGoogle Scholar
  2. 2.
    Li J H, Peng Y, Chang H Z, Li X, Crittenden J C, Hao J M. Chemical poison and regeneration of SCR catalysts for NOx removal from stationary sources. Frontiers of Environmental Science & Engineering, 2016, 10(3): 413–427CrossRefGoogle Scholar
  3. 3.
    Koebel M, Madia G, Elsener M. Selective catalytic reduction of NO and NO2 at low temperatures. Catalysis Today, 2002, 73(3–4): 239–247CrossRefGoogle Scholar
  4. 4.
    Irfan M F, Goo J H, Kim S D. Co3O4 based catalysts for NO oxidation and NOx reduction in fast SCR process. Applied Catalysis B: Environmental, 2008, 78(3–4): 267–274CrossRefGoogle Scholar
  5. 5.
    Grossale A, Nova I, Tronconi E, Chatterjee D, Weibel M. The chemistry of the NO/NO2–NH3 “fast” SCR reaction over Fe-ZSM5 investigated by transient reaction analysis. Journal of Catalysis, 2008, 256(2): 312–322CrossRefGoogle Scholar
  6. 6.
    Li K, Tang X, Yi H, Ning P, Song J, Wang J. Mechanism of catalytic oxidation of NO over Mn-Co-Ce-Ox catalysts with the aid of nonthermal plasma at low temperature. Industrial & Engineering Chemistry Research, 2011, 50(19): 11023–11028CrossRefGoogle Scholar
  7. 7.
    Yung M M, Holmgreen E M, Ozkan U S. Cobalt-based catalysts supported on titania and zirconia for the oxidation of nitric oxide to nitrogen dioxide. Journal of Catalysis, 2007, 247(2): 356–367CrossRefGoogle Scholar
  8. 8.
    Dawody J, Skoglundh M, Fridell E. The effect of metal oxide additives (WO3, MoO3, V2O5, Ga2O3) on the oxidation of NO and SO2 over Pt/Al2O3 and Pt/BaO/Al2O3 catalysts. Journal of Molecular Catalysis A Chemical, 2004, 209(1–2): 215–225CrossRefGoogle Scholar
  9. 9.
    Li L D, Shen Q, Cheng J, Hao Z P. Catalytic oxidation of NO over TiO2 supported platinum clusters I. Preparation, characterization and catalytic properties. Applied Catalysis B: Environmental, 2010, 93(3–4): 259–266CrossRefGoogle Scholar
  10. 10.
    Li L D, Shen Q, Cheng J, Hao Z P. Catalytic oxidation of NO over TiO2 supported platinum clusters. II: Mechanism study by in situ FTIR spectra. Catalysis Today, 2010, 158(3–4): 361–369CrossRefGoogle Scholar
  11. 11.
    Zhao B H, Ran R, Wu X D, Weng D, Wu X Y, Huang C Y. Comparative study of Mn/TiO2 and Mn/ZrO2 catalysts for NO oxidation. Catalysis Communications, 2014, 56(1): 36–40CrossRefGoogle Scholar
  12. 12.
    Ren Z, Guo Y B, Zhang Z H, Liu C H, Gao P X. Nonprecious catalytic honeycombs structured with three dimensional hierarchical Co3O4 nano-arrays for high performance nitric oxide oxidation. Journal of Materials Chemistry. A, Materials for Energy and Sustainability, 2013, 1(34): 9897–9906CrossRefGoogle Scholar
  13. 13.
    Lu W Z, Zhao X G, Wang H, Xiao W D. Catalytic oxidation of NO. Chinese Journal of Catalysis, 2000, 21(5): 423–427 (in Chinese)Google Scholar
  14. 14.
    Zhang J X, Zhang S L, Cai W, Zhong Q. The characterization of CrCe-doped on TiO2-pillared clay nanocomposites for NO oxidation and the promotion effect of CeOx. Applied Surface Science, 2013, 268: 535–540CrossRefGoogle Scholar
  15. 15.
    Guo R T, Zhen WL, Pan WG, Zhou Y, Hong J N, Xu H J, Jin Q, Ding C G, Guo S Y. Effect of Cu doping on the SCR activity of CeO2 catalyst prepared by citric acid method. Journal of Industrial and Engineering Chemistry, 2014, 20(4): 1577–1580CrossRefGoogle Scholar
  16. 16.
    Peng L L, Huang Y, Li J G, Zhang J F. Catalytic performance of CoOx-CeOx /ZrO2 in NO oxidation and its resistance against SO2. Journal of Fuel Chemistry and Technology–China, 2012, 40(11): 1377–1383 (in Chinese)Google Scholar
  17. 17.
    Jang B W L, Spivey J J, Kung M C, Kung H H. Low-temperature NOx removal for flue gas cleanup. Energy & Fuels, 1997, 11(2): 299–306CrossRefGoogle Scholar
  18. 18.
    Shang D H, Zhong Q, Cai W. High performance of NO oxidation over Ce–Co–Ti catalyst: the interaction between Ce and Co. Applied Surface Science, 2015, 325: 211–216CrossRefGoogle Scholar
  19. 19.
    Guillén-Hurtado N, Atribak I, Bueno-López A, García-García A. Influence of the cerium precursor on the physico-chemical features and NO to NO2 oxidation activity of ceria and ceria–zirconia catalysts. Journal of Molecular Catalysis A Chemical, 2010, 323(1–2): 52–58CrossRefGoogle Scholar
  20. 20.
    Sun Y, Huang Y, Zhao W, Su Q, Zhang J, Yang L. Research on catalytic performance of supported perovskite catalyst for NO oxidation and resistance to SO2 poisoning. Journal of Fuel Chemistry and Technology–China, 2014, 42(10): 1246–1252 (in Chinese)Google Scholar
  21. 21.
    Waqif M, Bachelier J, Saur O, Lavalley J C. Acidic properties and stability of sulfate-promoted metal oxides. Journal of Molecular Catalysis, 1992, 72(1): 127–138CrossRefGoogle Scholar
  22. 22.
    Lee Y W, Kim H J, Park J W, Choi B U, Choi D K, Park J W. Adsorption and reaction behavior for the simultaneous adsorption of NO–NO2 and SO2 on activated carbon impregnated with KOH. Carbon, 2003, 41(10): 1881–1888CrossRefGoogle Scholar
  23. 23.
    Yamamoto A, Teramura K, Hosokawa S, Tanaka T. Effects of SO2 on selective catalytic reduction of NO with NH3 over a TiO2 photocatalyst. Science and Technology of Advanced Materials, 2015, 16(2): 024901CrossRefGoogle Scholar
  24. 24.
    Chilukoti S, Gao F, Anderson B G, Niemantsverdriet J W H, Garland M. Pure component spectral analysis of surface adsorbed species measured under real conditions. BTEM-DRIFTS study of CO and NO reaction over a Pd/gamma-Al2O3 catalyst. Physical Chemistry Chemical Physics, 2008, 10(36): 5510–5520CrossRefGoogle Scholar
  25. 25.
    Ruggeri M P, Grossale A, Nova I, Tronconi E, Jirglova H, Sobalik Z. FTIR in situ mechanistic study of the NH3 NO/NO2 “Fast SCR” reaction over a commercial Fe-ZSM-5 catalyst. Catalysis Today, 2012, 184(1): 107–114CrossRefGoogle Scholar
  26. 26.
    Li L, Qu L, Cheng J, Li J, Hao Z. Oxidation of nitric oxide to nitrogen dioxide over Ru catalysts. Applied Catalysis B: Environmental, 2009, 88(1–2): 224–231CrossRefGoogle Scholar
  27. 27.
    Zhao Y, Hao R, Wang T, Yang C. Follow-up research for integrative process of pre-oxidation and post-absorption cleaning flue gas: Absorption of NO2, NO and SO2. Chemical Engineering Journal, 2015, 273: 55–65CrossRefGoogle Scholar
  28. 28.
    Waqif M, Pieplu A, Saur O, Lavaleey J C, Blanchard G. Use of CeO2-Al2O3 as a SO2 sorbent. Solid State Ionics, 1997, 95(1–2): 163–167CrossRefGoogle Scholar
  29. 29.
    Speight J G. Lange’s Handbook of Chemistry (6th edition). New York: McGraw-Hill Education, 2004Google Scholar

Copyright information

© Higher Education Press and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Tiejun Zhang
    • 1
  • Jian Li
    • 1
    • 2
  • Hong He
    • 1
    • 2
  • Qianqian Song
    • 1
  • Quanming Liang
    • 1
  1. 1.Key Laboratory of Beijing on Regional Air Pollution ControlBeijing University of TechnologyBeijingChina
  2. 2.Beijing Key Laboratory for Green Catalysis and SeparationBeijing University of TechnologyBeijingChina

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