Methane oxidation over A-site ordered and disordered Sr0.8Gd0.2CoO3−δ perovskites

Sergei N. Vereshchagin; Leonid A. Solovyov; Evgenii V. Rabchevskii; Vyacheslav A. Dudnikov; Sergey G. Ovchinnikov; Alexander G. Anshits

doi:10.1039/C4CC00913D

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Methane oxidation over A-site ordered and disordered Sr_0.8Gd_0.2CoO_3−δ perovskites†

Sergei N. Vereshchagin,*^a Leonid A. Solovyov,^a Evgenii V. Rabchevskii,^a Vyacheslav A. Dudnikov,^b Sergey G. Ovchinnikov^bc and Alexander G. Anshits^a

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* Corresponding authors

^a Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, Krasnoyarsk, Russia
E-mail: snv@icct.ru
Fax: +7 391 249 4108
Tel: +7 391 205 1944

^b L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russia

^c Siberian Federal University, Krasnoyarsk, Russia

Abstract

A tetragonal phase Sr_0.8Gd_0.2CoO_3−δ with ordered Gd³⁺/Sr²⁺ ions and oxygen vacancy sites is found to be about five times less active in the reaction of methane combustion than a quenched cubic perovskite phase with randomly distributed (disordered) Gd³⁺/Sr²⁺ ions over the A-sites of the crystal lattice.

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Article information

DOI: https://doi.org/10.1039/C4CC00913D
Article type: Communication
Submitted: 04 Feb 2014
Accepted: 17 Apr 2014
First published: 17 Apr 2014

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Chem. Commun., 2014,50, 6112-6115

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Methane oxidation over A-site ordered and disordered Sr_0.8Gd_0.2CoO_3−δ perovskites

S. N. Vereshchagin, L. A. Solovyov, E. V. Rabchevskii, V. A. Dudnikov, S. G. Ovchinnikov and A. G. Anshits, Chem. Commun., 2014, 50, 6112 DOI: 10.1039/C4CC00913D

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