Effect of potassium on the structure and catalytic properties of K1.2Cu0.4Fe2O4
- Authors: Lebukhova N.V.1, Chigrin P.G.1, Kirichenko E.A.1
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Affiliations:
- Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch
- Issue: Vol 52, No 5 (2016)
- Pages: 464-469
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/157545
- DOI: https://doi.org/10.1134/S0020168516050083
- ID: 157545
Cite item
Abstract
We have studied the structural properties of the phase K1.2Cu0.4Fe2O4 and the effect of potassium on its catalytic activity for oxidation of carbon. The results demonstrate that the potassium-doped phase differs from the undoped ferrite CuFe2O4 in linear dimensions of its unit cell, high density of structural defects, and low-temperature activity and activation energy for the catalytic process. Contact interaction between K1.2Cu0.4Fe2O4 and carbon in the temperature range 240–420°C leads to the reduction of Cu2+ to Cu+ and the formation of Cu2O, CuFeO2, and K2Fe4O7. Testing results for the phases identified indicate that the catalytic processes in the presence of K2Fe4O7 and K1.2Cu0.4Fe2O4 are identical.
About the authors
N. V. Lebukhova
Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch
Email: pal_chig@mail.ru
Russian Federation, Tikhookeanskaya ul. 153, Khabarovsk, 680042
P. G. Chigrin
Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch
Author for correspondence.
Email: pal_chig@mail.ru
Russian Federation, Tikhookeanskaya ul. 153, Khabarovsk, 680042
E. A. Kirichenko
Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch
Email: pal_chig@mail.ru
Russian Federation, Tikhookeanskaya ul. 153, Khabarovsk, 680042
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