SmFe1–yCoyO3 Perovskite-Type Oxides For Soot Oxidation
Paritosh C Kulkarni1, Satya Deepika Neelapala2, Hari Prasad Uppara3, Harshini Dasari4, Nico Van Esch5
1Paritosh C Kulkarni, Department of Chemical Engineering, Manipal Academy of Higher Education, MIT, Manipal, (Karnataka), India.
2Satya Deepika Neelapala, Department of Chemical Engineering, Manipal Academy of Higher Education, MIT, Manipal, (Karnataka), India.
3Hari Prasad Uppara, Department of Chemical Engineering, Manipal Academy of Higher Education, MIT, Manipal, (Karnataka), India.
4Harshini Dasari, Department of Chemical Engineering, Manipal Academy of Higher Education, MIT, Manipal, (Karnataka), India.
5Nico Van Esch, University of Antwerp – Belgium.
Manuscript received on 02 June 2019 | Revised Manuscript received on 27 June 2019 | Manuscript Published on 04 July 2019 | PP: 39-43 | Volume-8 Issue-1S4 June 2019 | Retrieval Number: A10080681S419/2019©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In the current study, a series of cobalt doped SmFeO3 perovskites (SmFe1-yCoyO3, y=0.1 to 0.35) were synthesized via EDTA-citrate method and used for soot removal applications. All the fabricated catalysts were characterized using XRD, SEM, BET surface area analysis and XPS analysis. It was found that the doping of Co into SmFeO3 perovskites considerable influences on morphology and soot oxidation reactions. The phase of the samples was investigated using XRD technique and examined the formation of orthorhombic phase till 30 mole% of Co-doped samples. All the samples exhibited low BET surface areas which are in the range of 2-6 m2/gm. From SEM analysis, the samples showed surface morphological changes with spherical shaped crystals. Sm existed in +3 oxidation states; Fe as +3 and Co as +3 in all the samples as evidenced from XPS results. Soot oxidation activity tests, investigated using TGA instrument and showed that SmFe0.7Co0.3O3-δ exhibited better catalytic performance (T50%- 496oC) when compared to un-doped SmFeO3 (T50% – 560oC).
Keywords: Perovskites, SmFe1-yCoyO3, Doping, Soot Oxidation, Adsorbed Oxygen Species.
Scope of the Article: Bio-Science and Bio-Technology