Thermalcharacterization of modified phyllosilicates with aromatic heterocyclic amines |
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| Authors: | C. C. Morais E. C. da Silva Filho Oberto G. da Silva Maria G. da Fonseca Luiza N. H. Arakaki J. G. de P. Espínola |
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| Affiliation: | 1. Departamento de Química, CCEN, Universidade Federal da Paraíba, Jo?o Pessoa, Brazil, 58059-900, Paraíba
2. Química, Universidade Federal do Piauí, Bom Jesus, Brazil, 64900-000, Piauí
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| Abstract: | Vermiculite with the general formula of [Si6.85Al1.15][Mg4.68Al0.51Fe0.63]O20(OH)4Ca0.128Na0.032K0.094 was made to react with heteroaromatic amines α-, β- and γ-picolines in aqueous solution. The products were characterized by elemental analysis, infrared spectroscopy, X-ray diffraction and thermogravimetry. The intercalated nanocompounds maintained the crystallinity which changed the original interlayer distance of 1422 to 1474, 1456 and 1474 pm, for the sequence of the guest picoline molecules. Thermogravimetry data suggested the intercalation reactions were governed by basicity of amines. |
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| Keywords: | aromatic amines phyllosilicate thermal analysis |
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