DIFFAX SIMULATIONS OF POLYTYPISM AND DISORDER IN HYDROTALCITE
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dc.contributor.author | Thomas G.S. | |
dc.contributor.author | Kamath P.V. | |
dc.contributor.author | Rajamathi M. | |
dc.date.accessioned | 2022-07-09T04:44:25Z | |
dc.date.available | 2022-07-09T04:44:25Z | |
dc.date.issued | 2004 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=31270037 | |
dc.identifier.citation | Clays and Clay Minerals, 2004, 52, 6, 693-699 | |
dc.identifier.issn | 0009-8604 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/38043 | |
dc.description.abstract | DIFFaX simulations show that the 3R1 and 3R2 polytypes of hydrotalcites (HT) have distinctly different X-ray powder diffraction (XRPD) patterns. The HT samples obtained by coprecipitation as well as those subjected to a subsequent hydrothermal treatment exhibit non-uniform broadening of lines in their XRPD patterns as well as anomalous variation in the intensities of the basal reflections. The reflections appearing in the mid-2 region (30 - 50°; 3 - 1.8 Å) are excessively broadened and do notcorrespond to either of the 3R polytypes. This broadening is shown to be due to a stacking of layers randomly rotated about the c crystallographic axis by n × 120° (n = 1,2). The intensities of the basal reflections vary due to the departure of the layer composition from the nominal value, essentially due to an increase in the intercalated water content. | |
dc.title | DIFFAX SIMULATIONS OF POLYTYPISM AND DISORDER IN HYDROTALCITE | |
dc.type | Статья |
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