Synthesis and Performance of Transition Metal Based Perovskite Catalysts for Diesel Soot Oxidation

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Submitted: 02-03-2017
Published: 28-10-2017
Section: Original Research Articles
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In present investigation, the effect of the intrinsic factors including the structure, nature of B-site ions in the four systems LaCoO3, LaNiO3, LaFeO3 and LaZnOy perovskite-type oxide catalysts, and the external factors of catalyst-soot contacting model, and the operating parameters such as air flow rate and temperature on the catalytic performances for the combustion of diesel soot were reported. The catalysts were characterized by XRD, FTIR, SEM, and N2-sorption. Activity of the catalyst for soot oxidation was evaluated on the basis of light off temperature characteristics Ti, T50 and T100. LaCoO3, LaFeO3 and LaNiO3 samples possessed the perovskite structure, and gave high activities for the total oxidation of soot below 445 oC. Whereas, LaZnOy catalyst was not indicating the ABO3 perovskite structure and existed as a mixture of metal oxides. The activity order in decreasing sequence of the catalyst was as follows: LaCoO3>LaFeO3>LaNiO3>LaZnOy. SEM pictures of the perovskite samples showed that the particles sizes were close to 100 nm. Copyright © 2017 BCREC GROUP. All rights reserved

Received: 2nd March 2017; Revised: 16th June 2017; Accepted: 12nd July 2017; Available online: 27th October 2017; Published regularly: December 2017

How to Cite: Mishra, A., Prasad, R. (2017). Synthesis and Performance of Transition Metal Based Perovskite Catalysts for Diesel Soot Oxidation. Bulletin of Chemical Reaction Engineering & Catalysis, 12 (3): 469-477 (doi:10.9767/bcrec.12.3.968.469-477)



perovskite; soot oxidation; soot-catalyst contact; air flow rate

  1. Anupama Mishra 
    University of Petroleum and Energy Studies, Dehradun Indian Institute of Technology (Banaras Hindu University), varanasi, Uttar Pradesh, India
    Assistant Professor University of Petroleum and Energy Studies, Dehradun, India
  2. Ram Prasad 
    Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
    Professor, Department of Chemical Engineering,Indian Institute of Technology (Banaras Hindu University), varanasi, Uttar Pradesh, India
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