A comparative study of substituted perovskite-type solids of oxidic La1-xSrxFeO3 +/-delta and chlorinated La1-xSrxFeO3 +/-delta Cl sigma form: Catalytic performance for CH4 oxidation by O-2 or N2O

 
This item is provided by the institution :
University of Ioannina
Repository :
Repository of UOI Olympias
see the original item page
in the repository's web site and access all digital files if the item*
share



2007 (EN)
A comparative study of substituted perovskite-type solids of oxidic La1-xSrxFeO3 +/-delta and chlorinated La1-xSrxFeO3 +/-delta Cl sigma form: Catalytic performance for CH4 oxidation by O-2 or N2O (EN)

Leontiou, A. A. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Leontiou, A. A. (EN)

comparative study between two groups of substituted perovskite-type solids, one oxidic and another chlorinated with general formulas La1-xSrxFeO3+/-delta and La1-xSrxFeO3+/-delta Cl sigma (x = 0.0, 0.4,0.6 and 0.8), was carried out for the oxidation of CH4 by O-2 and N2O. For stoichiometric feeding compositions CH4:O-2 = 1:2 and CH4:N2O = 1:4, the catalysts were active in the temperature range 400-760 degrees C. The oxidic solids were more active than the chlorinated ones. Catalysts of both groups, containing Sr, exhibited a drop in activity for the above reactions, related to an increased amount of desorbed oxygen from the solids. The amount of desorbed oxygen is linearly correlated with the Fe4+ content in the solid. The lower activity of the chlorinated samples can be attributed to a poisoning effect by chlorine, the quantity of which was estimated using proper deactivation kinetics. (c) 2007 Elsevier Inc. All rights reserved. (EN)

perovskite (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Journal of Catalysis (EN)

English

2007

<Go to ISI>://000250015700011

Elsevier (EN)



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)