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LaCoO3 perovskite catalysts for the environmental application of Auto motive CO oxidation

Author Affiliations

  • 1Department of Chemical Engineering, Institute of Technology, Nirma University, Ahmedabad-382481, INDIA

Res. J. Recent Sci., Volume 1, Issue (ISC-2011), Pages 178-184,(2012)

Abstract

Perovskite-type oxides were synthesized through conventional citrate methods. The synthesized perovskite materials had thenominal compositions of LaCoO3, LaCo0.8Cu0.2O3, La0.8Sr0.2CoO3 and La0.8Sr0.2Co0.8Cu0.2O3. The catalytic activity of theperovskite samples (for CO oxidation) were measured using a stainless steel reactor with an inlet gas mixture containingexhaust composition as gasoline engine. The prepared perovskite samples were characterized by nitrogen adsorption (BET),EDX and XRD analyses. The perovskite catalysts showed good structural and chemical stability and high activity for thecatalytic CO oxidation reaction. The catalyst samples prepared by the citrate method achieved the same CO conversion atlower temperatures than those prepared by the sol gel method. This was attributed to a better-formed perovskite crystals by thecitrate method. Substituted perovskite composition showed higher activity for CO conversions higher than 90%. Hence, for theenvironmental application of the automotive emission control, it can completely eliminate the poisonous CO gas.

References

  1. Shinjoh H., Rare earth metals for automotive exhaustcatalysts, Journal of Alloys and Compounds, 408-412,1061-1064 (2006)
  2. Thakur Prabhat, Rahul Mathur Anil andBalomajumder Chandrajit, Biofiltration of volatileorganic compounds (VOCs) – An overview, ResearchJournal of Chemical Sciences, 1(8), 83-92 (2011)
  3. Heck R. and Farrauto R., Automobile exhaustcatalysts, Applied Catalysis A: General, 221, 443-457 (2001)
  4. Traa Y., Burger B. and Weitkamp J., Zeolite-basedmaterials for the selective catalytic reduction of NOxwith hydrocarbons, Microporous and MesoporousMaterials, 30, 3–41 (1999)
  5. Zhang R., Villanueva A., Alamdari H. and KaliaguineS., Catalytic reduction of NO by propene over LaCO1-xCuxO3 perovskites synthesized by reactive grinding, Applied Catalysis B: Environmental, 64, 220-233(2006)
  6. Seyfi B., Baghalha M. and Kazemian H., ModifiedLaCoO3 nano-perovskite catalysts for theenvironmental application of automotive COoxidation, Chemical Engineering Journal, 148, 306-311 (2009)
  7. Sharma S., Hegde M., Das R. and Pandey M., Hydrocarbon oxidation and three-way catalyticactivity on a single step directly coated cordieritemonolith: High catalytic activity of Ce0.98Pd0.02O2, Applied Catalysis A: General, 337, 130–137 (2008)
  8. H. Iwakuni, Shinmyou Y., Yano H., Matsumoto H.and Ishihara T., Direct decomposition of NO into N2and O2 on BaMnO3 – based perovskites oxides, Applied Catalysis B: Environmental, 74, 299-306(2007)
  9. Ciambelli P., Cimino S., De Rossi S., Lisi L., MinelliG., Porta P. and Russo G., AFeO3 (A= La, Nd, Sm)and LaFe1-xMgxO3 perovskites as methanecombustion and CO oxidation catalysts: structural, redox and catalytic properties, Applied Catalysis B:Environmental, 29, 239–250 (2001)
  10. Ciambelli P., Cimino S., Lisi L., Faticanti M., MinelliG., Pettiti I. and Porta P., La,, Ca and Fe oxideperovskites: preparation, characterization andcatalytic properties for methane combustion, AppliedCatalysis B: Environmental, 33, 193–203 (2001)
  11. Alifanti M., Blangenois N., Florea M. and Delmon B., Supported Co-based perovskites as catalysts for totaloxidation of methane, Applied Catalysis A: General,280, 255–265 (2005)
  12. Thomas Screen, Platinum group metal perovskitecatalysts – Preparation and Application, PlatinumMetals Review, 51(2), 87–92 (2007)
  13. Nishihata Y., Cleaning up catalyst, News and views,Nature, 418, 138 (2002)
  14. Zhang R., Alamdari H. and Kaliaguine S., Fe-basedperovskites substituted by copper and palladium forNO+ CO reaction, Journal of Catalysis, 242, 241–253(2006)
  15. Asuman C., Canan K., Askar K. and Nesrin O., Catalytic Combustion of Methane over LaaCeßCo(2-a-ß)O3±d Perovskite Catalysts, Third Europeancombustion meeting ECM , (2007)
  16. Paolo C., Stefano C., Sergio D., Marco F., Luciana L.,Giuliano M., Ida P., Piero P., Gennaro R. and MariaT., AMnO3 (A=La, Nd, Sm) and Sm1-xSrMnO3perovskites as combustion catalysts: structural, redoxand catalytic properties, Applied Catalysis B:Environmental, 24, 243–253 (2000)
  17. Ozuomba J. O. and Ekpunobi A. J., Sol-Gel DerivedCarbon Electrode for Dye-Sensitized Solar Cells, Research Journal of Chemical Sciences, 1(8), 76-79(2011)
  18. Tanakaa H. and Misono M., Advances in designingperovskite catalysts, Current Opinion in Solid Stateand Materials Science, 5, 381–387 (2001)
  19. Strobel R., Baiker A. and Pratsinis S. E., Aerosolflame synthesis of catalysts, Advanced PowderTechnology, 17(5), 457–480 (2006)
  20. Lima R. K. C. de , Batista M. S., Wallau M., SanchesE. A. , Mascarenhas Y. P. and Urquieta-Gonza lez E.A. lez, High specific surface area LaFeCo perovskites— Synthesis by nanocasting and catalytic behavior inthe reduction of NO with CO, Applied Catalysis B:Environmental , 90, 441–450 (2009)