MnOx-Decorated Fe–Zr-Based Nano-Catalysts for Low-Temperature NH3-SCR: Improvement of Catalytic Activity

  • Chen Yang
  • Jian YangEmail author
  • Qingrui Jiao
  • Yuanmeng Tian
  • Qingcai Liu
  • Shan Ren
  • Jiangling Li
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


MnOx-modified Fe–Zr-based nano-catalysts (denoted as Mn(co)/Fe–Zr and Mn(im)/Fe–Zr) were synthesized with the co-precipitation impregnation method and impregnation method, respectively, and then were used for low-temperature selective catalytic reduction of NO with NH3 (SCR). Among these catalysts, the Mn(co)/Fe–Zr catalyst exhibits the highest NH3-SCR activity (94%) at 225 °C when WHSV = 300,000 mL g−1 h−1. Meanwhile, the properties of catalysts had been characterized by XRD, BET, XPS, and H2-TPR. As determined by BET, the addition of MnOx increased the surface area and pore volume of the catalyst. The XRD results suggest that the Mn(co)/Fe–Zr possessed highly dispersed MnOx on the surface of the catalyst. The results of XPS revealed that the Mn(co)/Fe–Zr had highest concentrations of Mn4+ and Fe3+.


Mn/Fe–Zr Low-temperature SCR De–NO 



The authors are grateful for the support from the National Natural Science Foundation of China (No. 51974049) and the Key Technology Innovation Projects of Key Industries in Chongqing (cstc2016zdcy-ztzx0020-03).


  1. 1.
    Long RQ, Yang RT (1999) Superior Fe-ZSM-5 catalyst for selective catalytic reduction of nitric oxide by ammonia. J Am Chem Soc 121:5595–5596CrossRefGoogle Scholar
  2. 2.
    Ding SP, Liu FD, Shi XY, Liu K, Lian ZH, Xie LJ, He H (2015) Significant promotion effect of mo additive on a novel Ce–Zr mixed oxide catalyst for the selective catalytic reduction of NOx with NH3. Acs Appl Mater Int 7:9497–9506CrossRefGoogle Scholar
  3. 3.
    Ma ZX, Yang HS, Li Q, Zheng JW, Zhang XB (2012) Catalytic reduction of NO by NH3 over Fe–Cu–O-X/CNTs-TiO2 composites at low temperature. Appl Catal A-Gen 427:43–48CrossRefGoogle Scholar
  4. 4.
    Zhu MH, Lai JK, Tumuluri U, Wu ZL, Wachs IE (2017) Nature of active sites and surface intermediates during SCR of NO with NH3 by supported V2O5–WO3/TiO2 catalysts. J Am Chem Soc 139:15624–15627CrossRefGoogle Scholar
  5. 5.
    Qi GS, Yang RT, Chang R (2004) MnOx–CeO2 mixed oxides prepared by co-precipitation for selective catalytic reduction of NO with NH3 at low temperatures. Appl Catal B-Environ 51:93–106CrossRefGoogle Scholar
  6. 6.
    Gao RH, Zhang DS, Liu XG, Shi LY, Maitarad P, Li HR, Zhang JP, Cao WG (2013) Enhanced catalytic performance of V2O5-WO3/Fe2O3/TiO2 microspheres for selective catalytic reduction of NO by NH3. Catal Sci Technol 3:191–199CrossRefGoogle Scholar
  7. 7.
    Han J, Zhang DS, Maitarad P, Shi LY, Cai SX, Li HR, Huang L, Zhang JP (2015) Fe2O3 nanoparticles anchored in situ on carbon nanotubes via an ethanol-thermal strategy for the selective catalytic reduction of NO with NH3. Catal Sci Technol 5:438–446CrossRefGoogle Scholar
  8. 8.
    Li J-W, Zhao Z, Chen B (2006) Effect of Fe2O3 crystal structure on the performance of Fe2O3/Cr2O3 high temperature water gas shift catalyst. Mod Chem Ind Z2:143–146Google Scholar
  9. 9.
    Liu FD, He H, Zhang CB, Shan WP, Shi XY (2011) Mechanism of the selective catalytic reduction of NOx with NH3 over environmental-friendly iron titanate catalyst. Catal Today 175:18–25CrossRefGoogle Scholar
  10. 10.
    Shen BX, Wang YY, Wang FM, Liu T (2014) The effect of Ce–Zr on NH3-SCR activity over MnOx(0.6)/Ce0.5Zr0.5O2 at low temperature. Chem Eng J 236:171–180CrossRefGoogle Scholar
  11. 11.
    Lin T, Xu HD, Li W, Zhang QL, Gong MC, Chen YQ (2009) Preparation of Mn–Fe/ZrO2–TiO2 monolith catalyst and its properties for low-temperature NH3-SCR reaction. Chem J Chinese U 30:2240–2246Google Scholar
  12. 12.
    Jiang XY, Ding GH, Lou LP, Chen YX, Zheng XM (2004) Effect of ZrO2 addition on CuO/TiO2 activity in the NO plus CO reaction. Catal Today 93(5):811–818CrossRefGoogle Scholar
  13. 13.
    Zhang Y, Huang T, Xiao R, Xu H, Shen K, Zhou C (2017) A comparative study on the Mn/TiO2-M(M=Sn, Zr or Al)Ox catalysts for NH3-SCR reaction at low temperature. Environ Technol 39:1Google Scholar
  14. 14.
    Zhang SG, Zhang BL, Liu B, Sun SL (2017) A review of Mn-containing oxide catalysts for low temperature selective catalytic reduction of NOx with NH3: reaction mechanism and catalyst deactivation. RSC Adv 7:26226–26242CrossRefGoogle Scholar
  15. 15.
    Yamashita T, Hayes P (2008) Analysis of XPS spectra of Fe2+ and Fe3+ ions oxide materials. Appl Surf Sci 254:8Google Scholar
  16. 16.
    Reddy BM, Rao KN, Bharali P (2009) Copper promoted cobalt and nickel catalysts supported on ceria-alumina mixed oxide: structural characterization and CO oxidation activity. Ind Eng Chem Res 48:8478–8486CrossRefGoogle Scholar
  17. 17.
    Victoria SG, Raj AME, Jothy VB, Ravidhas C, Wollschläger J, Suendorf M, Neumann M, Jayachandran M, Sanjeeviraja C (2010) XRD and XPS characterization of mixed valence Mn3O4 hausmannite thin films prepared by chemical spray pyrolysis technique. Appl Surf Sci 256:9Google Scholar
  18. 18.
    Guo J, Fang N, Shu S, Luo H, Chu Y, Li J (2017) Enhancement of low-temperature activity and sulfur resistance of Fe0.3Mn0.5Zr0.2 catalyst for NO removal by NH3-SCR, Chem Eng J 325:114–123Google Scholar
  19. 19.
    Shijian Y, Shangchao X, Yong L, Xin X, Feihong Q, Yue P, Yuwu F, Wenpo S, Junhua L (2014) Mechanism of N2O formation during the low-temperature selective catalytic reduction of NO with NH3 over Mn–Fe spinel. Environ Sci Technol 48:10354–10362CrossRefGoogle Scholar
  20. 20.
    Lian ZH, Liu FD, Shan WP, He H (2017) Improvement of Nb doping on SO2 resistance of VOx/CeO2 catalyst for the selective catalytic reduction of NOx with NH3. J Phys Chem C 121:7803–7809CrossRefGoogle Scholar
  21. 21.
    Lei Z, Yi CH, Yang BL (2013) Design, optimization, and control of reactive distillation column for the synthesis of tert-amyl ethyl ether. Chem Eng Res Des 91:819–830CrossRefGoogle Scholar
  22. 22.
    Chen ZH, Wang FR, Li H, Yang Q, Wang LF, Li XH (2012) Low-temperature selective catalytic reduction of NOx with NH3 over Fe–Mn mixed-oxide catalysts containing Fe3Mn3O8 phase. Ind Eng Chem Res 51:202–212CrossRefGoogle Scholar
  23. 23.
    Ramis G, Yi L, Busca G (1996) Ammonia activation over catalysts for the selective catalytic reduction of NOx and the selective catalytic oxidation of NH3. An FT-IR study. Catal Today 28:373–380CrossRefGoogle Scholar
  24. 24.
    Thirupathi B, Smirniotis PG (2012) Nickel-doped Mn/TiO2 as an efficient catalyst for the low-temperature SCR of NO with NH3: catalytic evaluation and characterizations. J Catal 288:74–83Google Scholar

Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Chen Yang
    • 1
  • Jian Yang
    • 1
    Email author
  • Qingrui Jiao
    • 1
  • Yuanmeng Tian
    • 1
  • Qingcai Liu
    • 1
  • Shan Ren
    • 1
  • Jiangling Li
    • 1
  1. 1.College of Materials Science and EngineeringChongqing UniversityChongqingChina

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