Strontium ferrite as a three-way catalyst component


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.



subject category

Materials Science; Physics


Shaula, AL; Karavai, OV; Ivanova, YA; Mikhalev, SM; Tarelho, LAC

our authors


This work was supported by FCT Investigator Program (IF/00280/2012/CP0172/CT0006, POPH), UID/EMS/00481/2013-FCT, CENTRO-01-0145-FEDER-022083, Portugal, and the European Social Fund, European Union, and CESAM - Centre for Environmental and Marine Studies, POCI-01-0145-FEDER-007638 (FCT Ref. UID/AMB/50017/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement.

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".