A Raman and infrared spectroscopic study of the sulphate mineral aluminite Al2(SO4)(OH)4 7H2O.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorFrost, Ray L.-
Autor(es): dc.creatorLópez, Andrés-
Autor(es): dc.creatorScholz, Ricardo Augusto-
Autor(es): dc.creatorWang, Lina-
Data de aceite: dc.date.accessioned2019-11-06T13:35:51Z-
Data de disponibilização: dc.date.available2019-11-06T13:35:51Z-
Data de envio: dc.date.issued2016-01-18-
Data de envio: dc.date.issued2016-01-18-
Data de envio: dc.date.issued2015-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/6104-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/559013-
Descrição: dc.descriptionThe mineral aluminite has been studied using a number of techniques, including scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDX) and Raman and infrared spectroscopy. Raman spectroscopy identifies multiple sulphate symmetric stretching modes in line with the three sulphate crystallographically different sites. Raman spectroscopy also identifies a low intensity band at 1069 cm 1 which may be attributed to a carbonate symmetric stretching mode, indicating the presence of thaumasite. The observation of multiple bands in this m4 spectral region offers evidence for the reduction in symmetry of the sulphate anion from Td to C2v or even lower symmetry. The Raman band at 3588 cm 1 is assigned to the OH unit stretching vibration and the broad feature at around 3439 cm 1 to water stretching bands. Water stretching vibrations are observed at 3157, 3294, 3378 and 3439 cm 1. Vibrational spectroscopy enables an assessment of the molecular structure of aluminite to be made.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3727581325051-
Palavras-chave: dc.subjectAluminite-
Palavras-chave: dc.subjectSulphate-
Palavras-chave: dc.subjectHydroxyls-
Palavras-chave: dc.subjectWater of hydration-
Palavras-chave: dc.subjectRaman spectroscopy-
Título: dc.titleA Raman and infrared spectroscopic study of the sulphate mineral aluminite Al2(SO4)(OH)4 7H2O.-
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