CATION ORDERING IN SYNTHETIC LAYERED DOUBLE HYDROXIDES
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dc.contributor.author | Vucelic M. | |
dc.contributor.author | Jones W. | |
dc.contributor.author | Moggridge G.D. | |
dc.date.accessioned | 2020-12-14T06:59:01Z | |
dc.date.available | 2020-12-14T06:59:01Z | |
dc.date.issued | 1997 | |
dc.identifier | https://elibrary.ru/item.asp?id=31768139 | |
dc.identifier.citation | Clays and Clay Minerals, 1997, , 6, 803-813 | |
dc.identifier.issn | 0009-8604 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/20694 | |
dc.description.abstract | A combined powder X-ray diffraction (XRD) and X-ray absorption (XAS) study of Fe(III) cation ordering within pyroaurite is described. It is concluded that there is no correlation between Fe(III) cation positions over distances of a few tens of angstroms, but that there is a very high level of local ordering, involving the absence of Fe(III)-Fe(III) neighbors. These observations are rationalized in terms of a significant frequency of lattice defects in the form of cation vacancies or Mg for Fe(III) substitutions. These results are expected to be generalizable to other M(II)/M(III) layered double hydroxides (LDHs), but are in contrast to the long-range cation ordering observed in Li/Al LDHs. This raises the interesting possibility of differing properties and stabilities based on the degree of cation ordering. | |
dc.title | CATION ORDERING IN SYNTHETIC LAYERED DOUBLE HYDROXIDES | |
dc.type | Статья |
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