Neelapala, Satya Deepika and Shetty, Abhishek and Gaggar, Gaurav and Mall, Rajat and Dasari, Harshini (2018) Development of Iron Doped Manganese oxide (Mn2-xFexO3) Catalysts for Soot Oxidation Applications. International Journal of Applied Engineering Research, 13. pp. 245-251. ISSN 0973-4562

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Abstract

This work deals with the catalytic soot oxidation using pure Manganese (III) oxide and Iron doped Mn2O3 catalysts. The compounds Mn2O3 and the Iron (Fe) doped oxide series Mn2-xFexO3 were synthesized using the method of coprecipitation. All the materials fabricated were characterized using XRD, BET, XPS and SEM analysis. XRD analysis has clearly confirmed the formation of solid solution in all the Fe doped catalysts (till x=0.2). Presence of multiple oxidation states in both Mn and Fe was noted in the prepared samples using XPS analysis. This redox ability of both Mn and Fe has increased the number of oxygen vacancies in Mn2-xFexO3 samples. The Higher amount of adsorbed oxygen is noted in the sample with x=0.2. SEM analysis showed that increase in Fe doping has increased the porosity of the samples. The activity of oxidation of soot by the catalysts was evaluated with instrumental TGA analysis where soot and the synthesized catalyst were in tight contact. Amongst the synthesized catalysts Mn1.8Fe0.2O3 exhibited better catalytic performance due to good porous structure and surface area along with the presence of higher oxygen vacancies

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