Catalysis and Nanostructured Materials Laboratory, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
Abstract
In this study, LaxSr1-xFeO3 (x = 0, 0.8) perovskite-type catalysts were prepared by gel combustion method and then 1.0 wt% palladium was loaded on them by a dry impregnation. The catalysts were characterized by XRD, SEM, H2-TPR, O2-TPD, NO-TPD and BET surface area techniques.H2-TPR profiles of the Pd/perovskite catalyst shows the reduction of Pd at around 140˚C which facilitates the reduction of NO in the H2-SCR. TPD results reveal that the substitution of Sr in the perovskites structure remarkably decreases the oxygen mobility and increases the NO adsorption. The H2-SCR of NO on the catalysts was performed in a temperature-programmed reaction apparatus in the presence of oxygen.The effect of carbon monoxide in the feed on H2-SCR was also investigated. The PLSFOcatalyst (1.0 wt% Pd/La0.8Sr0.2FeO3 shows the highest NO conversion and N2 selectivity at a moderate temperature of 190oC.
Nemati, A., Khodadadi, A., Mortazavi, Y., & Alinezhadchamazketi, A. (2015). Pd/LaxSr1-xFeO3 perovskite nanocatalysts for selective catalytic reduction of NOx by hydrogen. Scientia Iranica, 22(6), 2341-2349.
MLA
A. Nemati; A.A. Khodadadi; Y. Mortazavi; A. Alinezhadchamazketi. "Pd/LaxSr1-xFeO3 perovskite nanocatalysts for selective catalytic reduction of NOx by hydrogen". Scientia Iranica, 22, 6, 2015, 2341-2349.
HARVARD
Nemati, A., Khodadadi, A., Mortazavi, Y., Alinezhadchamazketi, A. (2015). 'Pd/LaxSr1-xFeO3 perovskite nanocatalysts for selective catalytic reduction of NOx by hydrogen', Scientia Iranica, 22(6), pp. 2341-2349.
VANCOUVER
Nemati, A., Khodadadi, A., Mortazavi, Y., Alinezhadchamazketi, A. Pd/LaxSr1-xFeO3 perovskite nanocatalysts for selective catalytic reduction of NOx by hydrogen. Scientia Iranica, 2015; 22(6): 2341-2349.
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