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Infrared spectroscopic study of natural hydrotalcites carrboydite and hydrohonessite

Frost, Ray L., Weier, Matt L., Clissold, Meagan, & Williams, Peter (2003) Infrared spectroscopic study of natural hydrotalcites carrboydite and hydrohonessite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 59(14), pp. 3313-3319.

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Abstract

Infrared spectroscopy has proven most useful for the study of anions in the interlayer of natural hydrotalcites. A suite of naturally occurring hydrotalcites including carrboydite, hydrohonessite, reevesite, motukoreaite and takovite were analysed. Variation in the hydroxyl stretching region was observed and the band profile is a continuum of states resulting from the OH stretching of the hydroxyl and water units. Infrared spectroscopy identifies some isomorphic substitution of sulphate for carbonate through an anion exchange mechanism for the minerals carrboydite and hydrohonessite. The infrared spectra of the CO3 and SO4 stretching region of takovite is complex because of band overlap. For this mineral some sulphate has replaced the carbonate in the structure. In the spectra of takovites, a band is observed at 1346 cm−1 and is attributed to the carbonate anion hydrogen bonded to water in the interlayer. Infrared spectroscopy has proven most useful for the study of the interlayer structure of these natural hydrotalcites.

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ID Code: 22679
Item Type: Journal Article
DOI: 10.1016/S1386-1425(03)00160-4
ISSN: 1386-1425
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2003 Elsevier
Deposited On: 17 Jun 2009 23:20
Last Modified: 01 Mar 2012 07:33

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