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Study on MnOx–FeOy composite oxide catalysts prepared by supercritical antisolvent process for low-temperature selective catalytic reduction of NOx

Published online by Cambridge University Press:  07 March 2016

Haoxi Jiang ,
Lu Zhang ,
Jing Zhao ,
Yonghui Li  and
Minhua Zhang
Haoxi Jiang
Affiliation:
Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China; and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
Lu Zhang
Affiliation:
Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China; and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
Jing Zhao
Affiliation:
Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China; and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
Yonghui Li*
Affiliation:
Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China; and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
Minhua Zhang
Affiliation:
Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China; and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this study, the MnOx–FeOy hollow nanospheres with solid solution structure were prepared by supercritical antisolvent (SAS) process. The average particle size was about 50 nm, and average pore diameter was 7 nm. By applying the SAS method, novel nonsupported MnOx–FeOy catalysts with a Mn/Fe mass ratio of 1:1 showed rather high selective catalytic reduction activity and broad active temperature window. The NOx conversion rate reached 97% at 220 °C, and maintained above 92% from 180 to 260 °C. The experiment results showed that iron doping could cause the apparent change of MnOx morphology and structure, which enhanced the oxidative ability of manganese species and increased surface active oxygen species. Meanwhile, compared with traditional methods, the SAS process could efficiently enhance the interaction between manganese and iron, and produce smaller size and larger pore volume nanoparticles with more active sites on the surface.

Keywords

catalyticnanostructureenvironmentally protective
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 6 , 28 March 2016 , pp. 702 - 712
Copyright
Copyright © Materials Research Society 2016 

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References

REFERENCES

Ettireddy, P.R., Ettireddy, N., and Smirniotis, P.G.: Surface characterization studies of TiO2 supported manganese oxide catalysts for low temperature SCR of NO with NH3. Appl. Catal., B 76(1), 123 (2007).CrossRefGoogle Scholar
Tang, X.L., Hao, J.M., Yi, H.H., and Li, J.H.: Low-temperature SCR of NO with NH3 over AC/C supported manganese-based monolithic catalysts. Catal. Today 126(3), 406 (2007).CrossRefGoogle Scholar
Lin, Q.C., Hao, J.M., and Li, J.H.: Fe promotion effect in Mn/USY for low-temperature selective catalytic reduction of NO with NH3. Chin. Chem. Lett. 17(7), 991 (2006).Google Scholar
Huang, J.H., Tong, Z.Q., and Huang, Y.: Selective catalytic reduction of NO with NH3 at low temperatures over iron and manganese oxides supported on mesoporous silica. Appl. Catal., B 78(3), 309 (2008).CrossRefGoogle Scholar
Jiang, H.X., Zhao, J., Jiang, D.Y., and Zhang, M.H.: Hollow MnOx–CeO2 nanospheres prepared by a green route: A novel low-temperature NH3-SCR catalyst. Catal. Lett. 144(2), 325 (2014).CrossRefGoogle Scholar
Lin, T., Xu, H.D., and Chen, Y.Q.: Integral type Mn–Fe/ZrO2–TiO2 catalyst preparation and low temperature NH3-SCR reaction activity. Chem. J. Chin. Univ. 30(11), 2240 (2009).Google Scholar
Wu, Z.B., Jiang, B.Q., and Liu, Y.: Effect of transition metals addition on the catalyst of manganese/titania for low-temperature selective catalytic reduction of nitric oxide with ammonia. Appl. Catal., B 79(4), 347 (2008).CrossRefGoogle Scholar
Yang, S.J., Wang, C.Z., Li, J.H., and Yan, N.Q.: Low temperature selective catalytic reduction of no with NH3 over Mn–Fe spinel: Performance, mechanism and kinetic study. Appl. Catal., B 110, 71 (2011).CrossRefGoogle Scholar
Long, R.Q., Yang, R.T., and Chang, R.: Low temperature selective catalytic reduction (SCR) of NO with NH3 over Fe–Mn based catalysts. Chem. Commun. 5, 452 (2002).CrossRefGoogle Scholar
Jiang, H.X., Huang, P., and Zhang, M.H.: Controllable synthesis of Ce1−xZrxO2 hollow nanospheres via supercritical anti-solvent precipitation. Mater. Charact. 63, 98 (2012).CrossRefGoogle Scholar
Wang, H.Q., Jiang, H.X., Kuang, L., and Zhang, M.H.: Synthesis of highly dispersed MnOx–CeO2 nanospheres by surfactant-assisted supercritical anti-solvent (SAS) technique: The important role of the surfactant. J. Supercrit. Fluids 92, 84 (2014).CrossRefGoogle Scholar
Jiang, H.X., Wang, H.Q., Li, G.M., and Zhang, M.H.: Synthesis of MnOx–CeO2·NOx catalysts by polyvinylpyrrolidone-assisted supercritical anti-solvent precipitation. J. Mater. Res. 29(18), 2188 (2014).CrossRefGoogle Scholar
Jiang, D.Y., Zhang, M.H., and Jiang, H.X.: Preparation and formation mechanism of nano-sized MnOx–CeO2 hollow spheres via a supercritical anti-solvent technique. Mater. Lett. 65(8), 1222 (2011).CrossRefGoogle Scholar
Huang, P., Jiang, H.X., and Zhang, M.H.: Structures and oxygen storage capacities of CeO2–ZrO2–Al2O3 ternary oxides prepared by a green route: Supercritical anti-solvent precipitation. J. Rare Earth 30(6), 524 (2012).CrossRefGoogle Scholar
Al-Sayari, S.A.: Catalytic conversion of syngas to olefins over Mn–Fe catalysts. Ceram. Int. 40(1), 723 (2014).CrossRefGoogle Scholar
Ismail, A.A.: Synthesis and characterization of Y2O3/Fe2O3/TiO2 nanoparticles by sol-gel method. Appl. Catal., B 58(1), 115 (2005).CrossRefGoogle Scholar
Wang, J., Wen, J., and Shen, M.Q.: Effect of interaction between Ce0.7Zr0.3O2 and Al2O3 on structural characteristics, thermal stability, and oxygen storage capacity. J. Phys. Chem. C 112(13), 5113 (2008).CrossRefGoogle Scholar
Cui, H.J., Cai, J.K., Shi, J.W., and Fu, M.L.: Fabrication of 3D porous Mn doped a-Fe2O3 nanostructures for the removal of heavy metals from wastewater. RSC Adv. 4, 10176 (2014).CrossRefGoogle Scholar
Huo, L.H., Chen, N.S., and Huang, J.L.: Infrared spectrum of gas-sensitive α-Fe2O3 nano-powder. J. Light Scattering 11(2), 170 (1999).Google Scholar
Hayashi, S. and Kanamori, H.: Infrared study of surface phonon modes in α-Fe2O3 microcrystals. J. Phys. C: Solid State Phys. 13(8), 1529 (1980).CrossRefGoogle Scholar
Wang, X.Y., Kang, Q., and Li, D.: Catalytic combustion of chlorobenzene over MnOx–CeO2 mixed oxide catalysts. Appl. Catal., B 86(3), 166 (2009).Google Scholar
Wang, Y.L., Ge, C.Z., and Zhan, L.: MnOx–CeO2/activated carbon honeycomb catalyst for selective catalytic reduction of NO with NH3 at low temperatures. Ind. Eng. Chem. Res. 51(36), 11667 (2012).CrossRefGoogle Scholar
Liu, Z.M., Li, Y., and Zhu, T.L.: Selective catalytic reduction of NOx by NH3 over Mn-promoted V2O5/TiO2 catalyst. Ind. Eng. Chem. Res. 53(33), 12964 (2014).CrossRefGoogle Scholar
Tang, Q.W., Jiang, L.H., Liu, J., and Sun, G.Q.: Effect of surface manganese valence of manganese oxides on the activity of the oxygen reduction reaction in alkaline media. ACS Catal. 4(2), 457 (2014).CrossRefGoogle Scholar
Huang, C.C., Khu, N.H., and Yeh, C.S.: The characteristics of sub 10 nm manganese oxide T1 contrast agents of different nanostructured morphologies. Biomaterials 31(14), 4073 (2010).CrossRefGoogle ScholarPubMed
Liu, F.D., He, H., Ding, Y., and Zhang, C.B.: Effect of manganese substitution on the structure and activity of iron titanate catalyst for the selective catalytic reduction of NO with NH3. Appl. Catal., B 93(1), 194 (2009).CrossRefGoogle Scholar
Zhao, H.H., Xie, G.Y., and Liu, Z.Y.: CuO/Al2O3 catalyst surface acidity and reactivity study by in situ DRIFTS-mass spectrometry technology. Acta Chim. Sin. 66(9), 1021 (2008).Google Scholar
Long, R.Q. and Yang, R.T.: Selective catalytic reduction of nitrogen oxides by ammonia over Fe3+-exchanged TiO2-pillared clay catalysts. J. Catal. 186(2), 254 (1999).CrossRefGoogle Scholar
Topsøe, N.Y.: Mechanism of the selective catalytic reduction of nitric oxide by ammonia elucidated by in situ on-line Fourier transform infrared spectroscopy. Science 265(5176), 1217 (1994).CrossRefGoogle ScholarPubMed
Ramis, G., Yi, L., Busca, G., and Turco, M.: Adsorption, activation, and oxidation of ammonia over SCR catalysts. J. Catal. 157(2), 523 (1995).CrossRefGoogle Scholar
Amores, J.M.G., Escribano, V.S., Ramis, G., and Busca, G.: An FT-IR study of ammonia adsorption and oxidation over anatase-supported metal oxides. Appl. Catal., B 13(1), 45 (1997).CrossRefGoogle Scholar
Ma, L., Li, J.H., Shi, W.B., and Arandiyan, H.: Influence of calcination temperature on Fe/HBEA catalyst for the selective catalytic reduction of NOx with NH3. Catal. Today 184(1), 145 (2012).CrossRefGoogle Scholar
Eigenmann, F., Maciejewski, M., and Baiker, A.: Selective reduction of no by NH3 over manganese-cerium mixed oxides: Relation between adsorption, redox and catalytic behavior. Appl Catal., B 62(3), 311 (2006).CrossRefGoogle Scholar