The Effect of Temperature and Support on the Reduction of Cobalt Oxide: An in Situ X-ray Diffraction Study
1
Department
of Chemistry, Bethel College, North Newton, Kansas 67117, United States
|
Publication type: Journal Article
Publication date: 2015-03-02
scimago Q1
wos Q3
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
In situ X-ray diffraction was used to study the reduction of unsupported CoO, and Co3O4 under different conditions of time and temperature, and the effect of lanthanum, ruthenium, or zinc doping of γ-alumina on the reduction of supported cobalt oxide. The reduction of unsupported cobalt oxide (Co3O4) produced CoO, then hexagonal close-packed Co (Co(hcp)) and at temperatures above 400 °C, only face-centered cubic Co (Co(fcc)) was obtained. However, it was possible to obtain a mixture of Co(hcp) and Co(fcc) at 450 °C only when the reduction was performed stepwise. Metallic Co(fcc) was obtained after reduction at 350 °C of supported Co3O4 on doped alumina; however, the reduction of unsupported CoO under the same conditions produced Co(hcp). Doping alumina with ruthenium oxide favors the reduction of Co3O4 to CoO and then to metallic Co(fcc). The crystal size apparently affects the phase of metallic cobalt obtained.
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Garcés L. J. et al. The Effect of Temperature and Support on the Reduction of Cobalt Oxide: An in Situ X-ray Diffraction Study // Journal of Physical Chemistry C. 2015. Vol. 119. No. 10. pp. 5484-5490.
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Zerger R. The Effect of Temperature and Support on the Reduction of Cobalt Oxide: An in Situ X-ray Diffraction Study // Journal of Physical Chemistry C. 2015. Vol. 119. No. 10. pp. 5484-5490.
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TY - JOUR
DO - 10.1021/jp5124184
UR - https://doi.org/10.1021/jp5124184
TI - The Effect of Temperature and Support on the Reduction of Cobalt Oxide: An in Situ X-ray Diffraction Study
T2 - Journal of Physical Chemistry C
AU - Zerger, Richard
PY - 2015
DA - 2015/03/02
PB - American Chemical Society (ACS)
SP - 5484-5490
IS - 10
VL - 119
SN - 1932-7447
SN - 1932-7455
ER -
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BibTex (up to 50 authors)
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@article{2015_Garcés,
author = {Richard Zerger},
title = {The Effect of Temperature and Support on the Reduction of Cobalt Oxide: An in Situ X-ray Diffraction Study},
journal = {Journal of Physical Chemistry C},
year = {2015},
volume = {119},
publisher = {American Chemical Society (ACS)},
month = {mar},
url = {https://doi.org/10.1021/jp5124184},
number = {10},
pages = {5484--5490},
doi = {10.1021/jp5124184}
}
Cite this
MLA
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Garcés, Luis Javier, et al. “The Effect of Temperature and Support on the Reduction of Cobalt Oxide: An in Situ X-ray Diffraction Study.” Journal of Physical Chemistry C, vol. 119, no. 10, Mar. 2015, pp. 5484-5490. https://doi.org/10.1021/jp5124184.