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Catalytic removal of CO and NOx using sol-gel synthesized LaB0.5Co0.5O3 (B=Cr, Mn and Cu) and LaMn x Co1-x O3 nano-perovskites

  • Catalysis, Reaction Engineering
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Abstract

Perovskite formulations of LaB0.5Co0.5O3 (B=Cr, Mn and Cu) were examined and evaluated as catalyst for reduction of NOx by CO. Among the different and various formulations, LaMn0.5Co0.5O3 showed the highest activityselectivity with 89.84% conversion of NO and 9.62% yield of N2O at 400 °C. Therefore, more precise evaluations were implemented on LaMn x Co1-x O3 to find the optimum formulation. The LaMn0.25Co0.75O3 included the maximum performance (68.79% conversion of NO at 350 °C and 92.85% at 400 °C) and N2O yield (9.01); therefore, it was selected as optimum catalyst. Characterization methods were utilized to correlate activity and physical-chemical properties. The presented activity and reducibility of catalysts were improved due to partial substitution of Co3+ by B cation. Finally, no direct relationship was found between surface area and catalyst activity. The optimum catalyst showed complete activity-selectivity higher than 450 °C.

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Authors and Affiliations

  1. Department of Chemical Engineering and Petroleum, University of Tabriz, Tabriz, Iran

    Behrang Izadkhah, Aligholi Niaei & Ali Tarjomannejad

  2. Department of Applied Chemistry and Chemical Engineering, University of Tabriz, Tabriz, Iran

    Behrang Izadkhah, Daryush Salari & Shahriar Hosseinpoor

  3. Department of Chemistry, Faculty of Science, Urmia University, 57159, Urmia, Iran

    Seyed Ali Hosseini

Authors
  1. Behrang Izadkhah
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  2. Aligholi Niaei
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  3. Daryush Salari
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  4. Shahriar Hosseinpoor
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  5. Seyed Ali Hosseini
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  6. Ali Tarjomannejad
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Correspondence to Aligholi Niaei.

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Izadkhah, B., Niaei, A., Salari, D. et al. Catalytic removal of CO and NOx using sol-gel synthesized LaB0.5Co0.5O3 (B=Cr, Mn and Cu) and LaMn x Co1-x O3 nano-perovskites. Korean J. Chem. Eng. 33, 1192–1199 (2016). https://doi.org/10.1007/s11814-015-0254-0

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  • DOI: https://doi.org/10.1007/s11814-015-0254-0

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