Strontium ferrite as a three-way catalyst component
authors Shaula, AL; Karavai, OV; Ivanova, YA; Mikhalev, SM; Tarelho, LAC
nationality International
journal MATERIALS LETTERS
author keywords Ferrite; Ceramics; Composite materials; Catalyst; Oxygen storage capacity; Exhaust gas
keywords PEROVSKITE; STORAGE
abstract Ni-containing SrFeO3-delta/Al2O3 and Ce0.5Zr0.5O2-delta/Al2O3 catalysts were prepared and deposited onto surfaces of porous alumina oxide foams. The measured oxygen storage capacity values are 1448 and 1275 mu mol-O/g for SrFeO3-delta and Ce0.5Zr0.5O2-delta powder, respectively (about 55% and 75% of their theoretical values). The experimental reactor using exhaust gas of a gasoline engine was assembled. Decrease of CO and other harmful components in case of Ni/SrFeO3-delta/Al2O3 coating is comparable to that of Ni/Ce0.5Zr0.5O2-delta/Al2O3 layer. After reactor conditions (700 degrees C during 15-20 min), microstructure of both catalysts remains unchanged. Strontium ferrite maintained an orthorhombic brownmillerite-type crystal structure, whereas nickel was detected in both metallic and oxide forms. (C) 2018 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0167-577X
year published 2018
volume 216
beginning page 273
ending page 276
digital object identifier (doi) 10.1016/j.matlet.2018.01.125
web of science category Materials Science, Multidisciplinary; Physics, Applied
subject category Materials Science; Physics
unique article identifier WOS:000424713000072
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journal impact factor 3.204
5 year journal impact factor 2.785
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