Structural Features of Copper Ferrite-Chromites Full article
| Journal |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
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| Output data | Year: 2015, Volume: 56, Number: 4, Pages: 642-649 Pages count : 8 DOI: 10.1134/S0022476615040058 | ||||
| Tags | Cu-Fe-Cr spinel, distribution of cations in the spinel structure, structural transition in spinel, water gas shift reaction | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Federal Agency for Scientific Organizations | V.45.8.11 |
| 2 | Russian Foundation for Basic Research | 13-03-00469 |
| 3 | Federal Agency for Scientific Organizations | V.45.3.6. |
Abstract:
The structural features and the distribution of cations over crystallographic sites of copperchromite, copper ferrite, and mixed chromite-ferrites with the spinel structure obtained by thermal decomposition at 600°C and 900°C of mixed hydroxy compounds of copper, iron, and chromium with the composition Cu2+/(Fe3++Cr3+) = 1/2 and different Fe3+/Cr3+ ratios are studied using a set of physicochemical methods. It is shown that the spinel-structure phases formed exist in two modifications: cubic and tetragonal, depending on the Fe3+/Cr3 ratio. The crystallographic relationship between the cubic and tetragonally distorted phases of spinel is analyzed. The distribution of cations over crystallographic sites, the character and degree of tetragonal distortion of Cu-Fe-Cr spinel depend on the Fe3+/Cr3+ ratio: when Fe3+/Cr3+ > 1, the ratio of unit cell parameters c/a> 1; when Fe3+/Cr3+ < 1, the ratio c/a< 1; when Fe3+/Cr3+ = 1, the spinel is cubic irrespective of the temperature of thermal treatment. The oxygen coordination of copper ions in the spinel structure has a significant effect on the catalytic properties of the samples in the low-temperature water gas shift reaction. © 2015 Pleiades Publishing, Ltd.
Cite:
Plyasova L.M.
, Zaikovskii V.I.
, Kustova G.N.
, Minyukova T.P.
, Molina I.Y.
, Shtertser N.V.
, Yurieva T.M.
Structural Features of Copper Ferrite-Chromites
Journal of Structural Chemistry. 2015. V.56. N4. P.642-649. DOI: 10.1134/S0022476615040058 WOS Scopus РИНЦ AN OpenAlex
Structural Features of Copper Ferrite-Chromites
Journal of Structural Chemistry. 2015. V.56. N4. P.642-649. DOI: 10.1134/S0022476615040058 WOS Scopus РИНЦ AN OpenAlex
Original:
Плясова Л.М.
, Зайковский В.И.
, Кустова Г.Н.
, Минюкова Т.П.
, Молина И.Ю.
, Штерцер Н.В.
, Юрьева Т.М.
Структурные особенности феррит-хромитов меди
Журнал структурной химии. 2015.
Т.56. №4. С.689-697. DOI: 10.15372/JSC20150405RSCI
РИНЦ
OpenAlex
Структурные особенности феррит-хромитов меди
Журнал структурной химии. 2015.
Т.56. №4. С.689-697. DOI: 10.15372/JSC20150405RSCI
РИНЦ
OpenAlex
Dates:
| Submitted: | Jun 27, 2014 |
| Published print: | Jul 1, 2015 |
| Published online: | Sep 27, 2015 |
Identifiers:
| Web of science: | WOS:000361897700005 |
| Scopus: | 2-s2.0-84942516159 |
| Elibrary: | 24953002 |
| Chemical Abstracts: | 2015:1564544 |
| OpenAlex: | W2179150737 |