Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/4513
Title: Vibrational spectroscopic study of the natural layered double hydroxide manasseite now defined as hydrotalcite-2H - Mg6Al2(OH)16[CO3]-4H2O.
Authors: Frost, Ray Leslie
Cipriano, Ricardo Augusto Scholz
López, Andrés
Theiss, Frederick L.
Keywords: Manesseite
Hydrotalcite
Pyroaurite
Raman spectroscopy
Infrared spectroscopy
Issue Date: 2014
Citation: FROST, R. L. et al. Vibrational spectroscopic study of the natural layered double hydroxide manasseite now defined as hydrotalcite-2H - Mg6Al2(OH)16[CO3]-4H2O. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, v. 118, p. 187-191, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1386142513009797>. Acesso em: 07 out. 2014.
Abstract: Raman and thermo-Raman spectroscopy have been applied to study the mineral formerly known as manasseite now simply renamed as hydrotalcite-2H Mg6Al2(OH)16[CO3]_4H2O. The mineral is a member of the homonymous hydrotalcite supergroup. Hydrogen bond distances calculated using a Libowitzky-type empirical function varied between 2.61 and 3.00 Å. Stronger hydrogen bonds were formed by water units as compared to the hydroxyl units. Raman spectroscopy enabled the identification of bands attributed to the hydroxyl units. Two Raman bands at 1059 and 1064 cm_1 are assigned to symmetric stretching modes of the carbonate anion. Thermal treatment shifts these bands to higher wavenumbers indicating a change in the strength of the carbonate bonding.
URI: http://www.repositorio.ufop.br/handle/123456789/4513
metadata.dc.identifier.doi: https://doi.org/10.1016/j.saa.2013.08.105
ISSN: 1386-1425
metadata.dc.rights.license: O periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3487271236523.
Appears in Collections:DEGEO - Artigos de periódicos

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