Grinding-induced effects on goethite (α-FeOOH)
The mechanochemical decomposition of goethite (α-FeOOH) into hematite (α-Fe2O3) has been studied by X-ray powder diffraction, transmission electron microscopy, and N2 adsorption at 77°K. It is postulated that the energy brought about by the goethite deformation during grinding may act as driving force for the transformation. No microporosity was observed during the transformation and only mesoporosity can be detected. The changes in specific surface area are related to changes in particle size and to the reduction in volume during the goethite to hematite transformation.
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Academic Press
1983
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| Online Access: | http://hdl.handle.net/10261/63577 |
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dig-irnas-es-10261-635772016-02-17T12:03:19Z Grinding-induced effects on goethite (α-FeOOH) Rendón, José L. Cornejo, J. Arambarri, Pablo de The mechanochemical decomposition of goethite (α-FeOOH) into hematite (α-Fe2O3) has been studied by X-ray powder diffraction, transmission electron microscopy, and N2 adsorption at 77°K. It is postulated that the energy brought about by the goethite deformation during grinding may act as driving force for the transformation. No microporosity was observed during the transformation and only mesoporosity can be detected. The changes in specific surface area are related to changes in particle size and to the reduction in volume during the goethite to hematite transformation. Peer Reviewed 2012-12-24T12:44:09Z 2012-12-24T12:44:09Z 1983 2012-12-24T12:44:09Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1016/0021-9797(83)90294-1 issn: 0021-9797 e-issn: 1095-7103 Journal of Colloid and Interface Science 94(2): 546-551 (1983) http://hdl.handle.net/10261/63577 10.1016/0021-9797(83)90294-1 en none Academic Press |
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The mechanochemical decomposition of goethite (α-FeOOH) into hematite (α-Fe2O3) has been studied by X-ray powder diffraction, transmission electron microscopy, and N2 adsorption at 77°K. It is postulated that the energy brought about by the goethite deformation during grinding may act as driving force for the transformation. No microporosity was observed during the transformation and only mesoporosity can be detected. The changes in specific surface area are related to changes in particle size and to the reduction in volume during the goethite to hematite transformation. |
| format |
artículo |
| author |
Rendón, José L. Cornejo, J. Arambarri, Pablo de |
| spellingShingle |
Rendón, José L. Cornejo, J. Arambarri, Pablo de Grinding-induced effects on goethite (α-FeOOH) |
| author_facet |
Rendón, José L. Cornejo, J. Arambarri, Pablo de |
| author_sort |
Rendón, José L. |
| title |
Grinding-induced effects on goethite (α-FeOOH) |
| title_short |
Grinding-induced effects on goethite (α-FeOOH) |
| title_full |
Grinding-induced effects on goethite (α-FeOOH) |
| title_fullStr |
Grinding-induced effects on goethite (α-FeOOH) |
| title_full_unstemmed |
Grinding-induced effects on goethite (α-FeOOH) |
| title_sort |
grinding-induced effects on goethite (α-feooh) |
| publisher |
Academic Press |
| publishDate |
1983 |
| url |
http://hdl.handle.net/10261/63577 |
| work_keys_str_mv |
AT rendonjosel grindinginducedeffectsongoethiteafeooh AT cornejoj grindinginducedeffectsongoethiteafeooh AT arambarripablode grindinginducedeffectsongoethiteafeooh |
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1777664490974740480 |