dc.contributor.author |
Martínez-Gallegos, S |
|
dc.contributor.author |
Pfeiffer, H |
|
dc.contributor.author |
Lima, E |
|
dc.contributor.author |
Espinosa, M |
|
dc.contributor.author |
Bosch, P |
|
dc.contributor.author |
Bulbulian, S |
|
dc.date.accessioned |
2011-01-22T10:26:07Z |
|
dc.date.available |
2011-01-22T10:26:07Z |
|
dc.date.issued |
2006 |
|
dc.identifier.issn |
1387-1811 |
|
dc.identifier.uri |
http://hdl.handle.net/11154/3189 |
|
dc.description.abstract |
In the reaction sequence of thermal decomposition of chromate exchanged hydrotalcite a spinel structure was detected at 800 degrees C the main compound was a periclase-like structure. At 1000-1200 degrees C the only compounds were MgO and the spinel MgAl1.3Cr0.7O4. The particle size and morphology did not change with gamma irradiation or thermal treatments. The composition of the spinels MgAl2-xCrxO4 varies when samples are irradiated and/or thermally treated. Aluminum in octahedral sites is displaced to tetrahedral sites as chromium is incorporated into spinels. A molecular dynamics simulation of the spinels reproduced the experimental behaviour. A mechanism based on thermodynamical data and Wagner reactions is proposed. (c) 2006 Elsevier Inc. All rights reserved. |
en_US |
dc.language.iso |
en |
en_US |
dc.title |
Cr(VI) immobilization in mixed (Mg, Al) oxides |
en_US |
dc.type |
Article |
en_US |
dc.identifier.idprometeo |
1338 |
|
dc.identifier.doi |
10.1016/j.micromeso.2006.03.045 |
|
dc.source.novolpages |
94(40603):234-242 |
|
dc.subject.wos |
Chemistry, Applied |
|
dc.subject.wos |
Chemistry, Physical |
|
dc.subject.wos |
Nanoscience & Nanotechnology |
|
dc.subject.wos |
Materials Science, Multidisciplinary |
|
dc.description.index |
WoS: SCI, SSCI o AHCI |
|
dc.subject.keywords |
chromium adsorption |
|
dc.subject.keywords |
chromates |
|
dc.subject.keywords |
hydrotalcite |
|
dc.subject.keywords |
radiation damage |
|
dc.subject.keywords |
spinel |
|
dc.subject.keywords |
thermal decomposition |
|
dc.relation.journal |
Microporous and Mesoporous Materials |
|