Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
210741 | Fuel Processing Technology | 2010 | 4 Pages |
Abstract
La1 − xCaxFeO3 (x = 0.1, 0.2, 0.3 and 0.4) perovskites, prepared by the citrate method and characterized by AAS, XRD, TPR-H2 and TPD-O2, were assayed, and its catalytic activity evaluated for soot combustion, using carbon black as a model compound for soot. The catalytic activity was determined by non-isothermal thermogravimetric analysis. A significant enhancement of the catalytic activity was found by increasing the degree of La3+ substitution by Ca2+ in the perovskites, which coincided with an increase of the α-oxygen concentration and thus, a probable enrichment of the CB surface with these oxygenated species, at the start of the combustion.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
R. Jiménez, R. Zamora, G. Pecchi, X. García, A.L. Gordon,