An ESR study of kaolinite under extreme conditions

An ESR study of kaolinite under extreme conditions

Kaolinite exhibits two principal ESR resonances centred at g∼4 and g∼2. Following heat treatment at 500°C, the low-field resonance collapses with a simultaneous increase in intensity of the central line. Similar results were obtained from dry-ground kaolinite and this change is attributed partly to...

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Main Authors: N. Chaikum, R. M. Carr
Other Authors: Mahidol University
Format: Article
Published: 2018
Subjects:
Chemistry
Materials Science
Physics and Astronomy
Online Access:https://repository.li.mahidol.ac.th/handle/123456789/15740
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spelling th-mahidol.157402018-06-14T16:17:44Z An ESR study of kaolinite under extreme conditions N. Chaikum R. M. Carr Mahidol University University of Otago Chemistry Materials Science Physics and Astronomy Kaolinite exhibits two principal ESR resonances centred at g∼4 and g∼2. Following heat treatment at 500°C, the low-field resonance collapses with a simultaneous increase in intensity of the central line. Similar results were obtained from dry-ground kaolinite and this change is attributed partly to oxidation of Fe 2+ . X-irradiation resulted in new paramagnetic species on the clay surfaces and a corresponding intense signal at g=2, while treatment with solutions of a strong acid and a strong base produced no significant change in the spectrum. © 1989. 2018-06-14T09:13:33Z 2018-06-14T09:13:33Z 1989-01-01 Article Solid State Ionics. Vol.32-33, No.PART 1 (1989), 389-393 10.1016/0167-2738(89)90245-2 01672738 2-s2.0-0024613055 https://repository.li.mahidol.ac.th/handle/123456789/15740 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024613055&origin=inward
institution Mahidol University
building Mahidol University Library
continent Asia
country Thailand
Thailand
content_provider Mahidol University Library
collection Mahidol University Institutional Repository
topic Chemistry
Materials Science
Physics and Astronomy
spellingShingle Chemistry
Materials Science
Physics and Astronomy
N. Chaikum
R. M. Carr
An ESR study of kaolinite under extreme conditions
description Kaolinite exhibits two principal ESR resonances centred at g∼4 and g∼2. Following heat treatment at 500°C, the low-field resonance collapses with a simultaneous increase in intensity of the central line. Similar results were obtained from dry-ground kaolinite and this change is attributed partly to oxidation of Fe 2+ . X-irradiation resulted in new paramagnetic species on the clay surfaces and a corresponding intense signal at g=2, while treatment with solutions of a strong acid and a strong base produced no significant change in the spectrum. © 1989.
author2 Mahidol University
author_facet Mahidol University
N. Chaikum
R. M. Carr
format Article
author N. Chaikum
R. M. Carr
author_sort N. Chaikum
title An ESR study of kaolinite under extreme conditions
title_short An ESR study of kaolinite under extreme conditions
title_full An ESR study of kaolinite under extreme conditions
title_fullStr An ESR study of kaolinite under extreme conditions
title_full_unstemmed An ESR study of kaolinite under extreme conditions
title_sort esr study of kaolinite under extreme conditions
publishDate 2018
url https://repository.li.mahidol.ac.th/handle/123456789/15740
_version_ 1763492185848676352

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