Publication:
An ESR study of kaolinite under extreme conditions

Issued Date

1989-01-01

Resource Type

Article

ISSN

01672738

DOI

10.1016/0167-2738(89)90245-2

Other identifier(s)

2-s2.0-0024613055

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Solid State Ionics. Vol.32-33, No.PART 1 (1989), 389-393

Suggested Citation

N. Chaikum, R. M. Carr An ESR study of kaolinite under extreme conditions. Solid State Ionics. Vol.32-33, No.PART 1 (1989), 389-393. doi:10.1016/0167-2738(89)90245-2 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/15740

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Title

An ESR study of kaolinite under extreme conditions

Author(s)

N. Chaikum
 R. M. Carr

Other Contributor(s)

Mahidol University
 University of Otago

Abstract

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.

Keyword(s)

Chemistry
 Materials Science
 Physics and Astronomy

Availability

URI

https://repository.li.mahidol.ac.th/handle/20.500.14594/15740

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Scopus 1969-1990