Experimental and Modeling Study of CO-Selective Catalytic Reduction of NO Over Perovskite-Type Nanocatalysts

  • Shiva Abedi Department of Chemistry, Faculty of Science, Urmia University, 11km Sero Road, Urmia, 5756151818, Iran
  • Aligholi Niaei Department of Chemical Engineering and Applied Chemistry, Faculty of Chemistry, University of Tabriz, 29 Bahman Blvd. Tabriz, 5166616471, Iran
  • Najaf Namjou Department of Chemical Engineering and Applied Chemistry, Faculty of Chemistry, University of Tabriz, 29 Bahman Blvd. Tabriz, 5166616471, Iran
  • Darioush Salari Department of Chemical Engineering and Applied Chemistry, Faculty of Chemistry, University of Tabriz, 29 Bahman Blvd. Tabriz, 5166616471, Iran
  • Ali Tarjomannejad Department of Chemical Engineering and Applied Chemistry, Faculty of Chemistry, University of Tabriz, 29 Bahman Blvd. Tabriz, 5166616471, Iran
  • Behrang Izadkhah Department of Chemical Engineering and Applied Chemistry, Faculty of Chemistry, University of Tabriz, 29 Bahman Blvd. Tabriz, 5166616471, Iran

Abstract

In this work LaFeO3, LaFe0.7Mn0.3O3 and LaMn0.7Fe0.3O3 nanocatalysts with perovskite structures have been synthesized by sol-gel method. The selective catalytic reduction of NO with CO (CO-SCR) using synthesized nanocatalysts was investigated in a plug flow reactor. The kinetics of CO-SCR process was studied and three kinetic models were used to describe the behavior of the system, including power low model (PLM), kinetic model 1 (KM1) and kinetic model 2 (KM2). The KM1 was the best model with correlation coefficients of 0.9924, 0.9911 and 0.9902 and the sum of squared errors of 0.0504, 0.0488 and 0.0397, for LaFeO3, LaFe0.7Mn0.3O3 and LaFe0.3Mn0.7O3 catalysts, respectively. By comparing experimental results with the predicted results of the KM1, it was found that the proposed model can predict the performance of catalysts in the CO-SCR process with considerable precision. The structure and morphology of perovskite-type oxides were characterized by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively.

Keywords: NOx, CO-SCR, kinetic modeling, perovskite-type oxides
Published online
2019-05-15
How to Cite
Abedi, S., Niaei, A., Namjou, N., Salari, D., Tarjomannejad, A. and Izadkhah, B. “Experimental and Modeling Study of CO-Selective Catalytic Reduction of NO Over Perovskite-Type Nanocatalysts”, Periodica Polytechnica Chemical Engineering. doi: https://doi.org/10.3311/PPch.13767.
Section
Articles