Divalent Transition Metals Substituted LaFeO₃ Perovskite Catalyst for Nitrous Oxide Decomposition
Pages 206-212
Asma H.A. Medkhali, Katabathini Narasimharao, Sulaiman N. Basaheland Mohamed Mokhtar

DOI: http://dx.doi.org/10.6000/1929-6037.2014.03.04.3

Published: 03 December 2014

Abstract: Divalent transition metals substituted LaFeO₃ type perovskite catalysts (LaFe_0.95M_0.05O₃ with M= Cu²⁺ and Ni²⁺) were synthesized by hydrothermal method and characterized by using X-ray diffraction (XRD), temperature programmed reduction with H₂ (H₂-TPR) and N₂-physisorption techniques. The catalytic activity of the catalysts was tested for N₂O decomposition reaction. Enhancement in the catalytic activity was observed after substitution of Cu and Ni metal ions into LaFeO₃ framework. LaFe_0.95Ni_0.05O₃ showed higher catalytic activity than LaFeO₃ and LaFe_0.95Cu_0.05O₃ catalysts_. The plausible reason for the increased activity is that LaFe_0.95Ni_0.05O₃ sample possessed high oxygen mobility than the other two samples.