SYNERGY IN THE SELECTIVE CATALYTIC REDUCTION OF NOX OVER Cu1-X CoX Fe2 O4 FERRITES

Authors

  • Sarah Elisa Briceño Araujo Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela
  • Vicente Segundo Sagredo Laboratorio de Magnetismo. Facultad de Ciencias, Universidad de los Andes. Mérida, Venezuela
  • Hector Del Castillo Laboratorio de Cinética y Catálisis. Facultad de Ciencias, Universidad de los Andes. Mérida, Venezuela

Abstract

Ferrite nanoparticles of Cu1-X CoX Fe2 O4, were synthesized by sol-gel auto-combustion method and characterized using the techniques: Thermo gravimetric (TGA), Differential Thermal Analysis (DTA), X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Surface area (BET), X-ray spectroscopy (XPS), Temperature programmed reduction (TPR) and Temperature programmed desorption (TPD). The obtained particles with an average size of 100 nm and spherical shape. The catalytic tests revealed that the Cu1-X CoX Fe2 O4 ferrites are efficient catalysts for the Selective Catalytic Reduction of NOx (SCR-NOx), using a hydrocarbon as a reducing agent in the range of 250-450 ºC, obtaining a maximum conversion of 40% NO and 95% selectivity towards the formation of N2, suggesting the presence of a synergistic effect between Cu2+ and Co2+ in the system Cu1-x Cox Fe2 O4.

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Author Biographies

Sarah Elisa Briceño Araujo, Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela

Postdoctorante en el Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela.

Vicente Segundo Sagredo, Laboratorio de Magnetismo. Facultad de Ciencias, Universidad de los Andes. Mérida, Venezuela

Profesor. Facultad de Ciencias, Universidad de los Andes. Mérida, Venezuela

Hector Del Castillo, Laboratorio de Cinética y Catálisis. Facultad de Ciencias, Universidad de los Andes. Mérida, Venezuela

Profesor. Facultad de Ciencias, Universidad de los Andes. Mérida, Venezuela.

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Published

2011-08-31

How to Cite

Briceño Araujo, S. E., Sagredo, V. S., & Del Castillo, H. (2011). SYNERGY IN THE SELECTIVE CATALYTIC REDUCTION OF NOX OVER Cu1-X CoX Fe2 O4 FERRITES. LatinAmerican Journal of Metallurgy and Materials, 129–135. Retrieved from https://www.rlmm.org/ojs/index.php/rlmm/article/view/183

Issue

2012, 32(1)

Section

Regular Articles

License

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