Показать сокращенную информацию
| dc.contributor.author | Lopushan V.I. | en |
| dc.contributor.author | Kuznetsov G.F. | en |
| dc.contributor.author | Pletnev R.N. | en |
| dc.contributor.author | Kleshchev D.G. | en |
| dc.date.accessioned | 2018-10-16T06:54:20Z | |
| dc.date.available | 2018-10-16T06:54:20Z | |
| dc.date.issued | 2007 | |
| dc.identifier.issn | 10628738 | |
| dc.identifier.uri | http://dspace.susu.ru/handle/0001.74/20727 | |
| dc.description.abstract | The kinetics and mechanism of phase transitions (PTs) in gibbsite (γ-Al(OH)3) under heat treatment in air and water vapor (170-550°C) have been investigated by iso-and nonisothermal thermogravimetry, X-ray phase analysis, transmission electron microscopy, 27Al nuclear magnetic resonance, and chemical analysis. It is shown that (i) the gibbsite PT in air involves two interrelated transformations occurring simultaneously: (1) gibbsite → boehmite (γ-AlOOH) and (2) gibbsite → X-ray-amorphous alumina (Al2O3); both are implemented through the topochemical mechanism; and (ii) in water vapor only transformation of gibbsite into boehmite occurs (PT-3), which is implemented through the dissolution-precipitation mechanism. The apparent activation energies of the PTs under consideration have been determined. © Allerton Press, Inc. 2007. | en] |
| dc.language.iso | English | |
| dc.relation.ispartof | Bulletin of the Russian Academy of Sciences: Physics | en] |
| dc.subject | Activation energy | en] |
| dc.subject | Chemical analysis | en] |
| dc.subject | Dissolution | en] |
| dc.subject | Heat treatment | en] |
| dc.subject | Nuclear magnetic resonance spectroscopy | en] |
| dc.subject | Phase transitions | en] |
| dc.subject | Precipitation (chemical) | en] |
| dc.subject | Reaction kinetics | en] |
| dc.subject | Thermogravimetric analysis | en] |
| dc.subject | Transmission electron microscopy | en] |
| dc.subject | Water vapor | en] |
| dc.subject | X ray analysis | en] |
| dc.subject | Air vapor | en] |
| dc.subject | Amorphous alumina | en] |
| dc.subject | Topochemical mechanism | en] |
| dc.subject | Alumina | en] |
| dc.title | Phase transformations in γ-Al(OH)3 under heat treatment in air and water vapor | en |
| dc.type | Conference Paper | en] |
| dc.identifier.doi | 10.3103/S1062873807080394 | |
| dc.identifier.scopus | https://www.scopus.com/inward/record.uri?eid=2-s2.0-34548759636&doi=10.3103%2fS1062873807080394&partnerID=40&md5=20d5c5342f52603685a9d434a985d0c3 |
| Файл | Размер | Формат | Просмотр |
|---|---|---|---|
|
В этом документе нет ни одного файла. |
|||