In situ XRD Study of Nanocrystalline Cobalt Oxide Reduction Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2009, Volume: 50, Number: 2, Pages: 192-198 Pages count : 7 DOI: 10.1134/S0023158409020086 | ||||
| Tags | Cobalt; Cobalt Oxide; Cobalt Metal; Differential Dissolution; Electric Neutrality Condition | ||||
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Abstract:
The reduction of nanocrystalline cobalt oxide samples (single-phase and supported on γ-Al2O3) was studied using in situ X-ray diffraction (XRD) analysis. The atomic structures of single-phase and supported Co3O4 samples were refined, and the occurrence of cationic vacancies was demonstrated. A set of methods (XRD, temperature-programmed reduction, and differential dissolution) was used to find that the reduction of supported and unsupported model cobalt oxide was considerably different. The single-phase sample was reduced in undiluted hydrogen to cobalt metal with a hexagonal closely packed structure. The reduction of the supported sample (unlike the single-phase sample) occurred through the formation of a crystalline CoO phase to the formation of cobalt metal with a face-centered cubic structure. Interaction of cobalt oxide with the γ-Al2O3 support, which hinders the reduction to cobalt metal, was detected.
Cite:
Bulavchenko O.A.
, Cherepanova S.V.
, Malakhov V.V.
, Dovlitova L.S.
, Ishchenko A.V.
, Tsybulya S.V.
In situ XRD Study of Nanocrystalline Cobalt Oxide Reduction
Kinetics and Catalysis. 2009. V.50. N2. P.192-198. DOI: 10.1134/S0023158409020086 WOS Scopus РИНЦ ANCAN OpenAlex
In situ XRD Study of Nanocrystalline Cobalt Oxide Reduction
Kinetics and Catalysis. 2009. V.50. N2. P.192-198. DOI: 10.1134/S0023158409020086 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Булавченко О.А.
, Черепанова С.В.
, Малахов В.В.
, Довлитова Л.С.
, Ищенко А.В.
, Цыбуля С.В.
Дифракционные исследования процесса восстановления нанокристаллических образцов оксида кобальта в условиях in situ
Кинетика и катализ. 2009. Т.50. №2. С.205-211. РИНЦ
Дифракционные исследования процесса восстановления нанокристаллических образцов оксида кобальта в условиях in situ
Кинетика и катализ. 2009. Т.50. №2. С.205-211. РИНЦ
Dates:
| Submitted: | Nov 20, 2007 |
| Published print: | Mar 1, 2009 |
| Published online: | Apr 24, 2009 |
Identifiers:
| Web of science: | WOS:000265499100008 |
| Scopus: | 2-s2.0-65349107112 |
| Elibrary: | 13615192 |
| Chemical Abstracts: | 2009:496057 |
| Chemical Abstracts (print): | 150:481741 |
| OpenAlex: | W2076657150 |