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Type: Artigo de periódico
Title: Vermiculite-aliphatic amine interactions at the solid/liquid interface: a thermodynamic approach
Author: da Fonseca, MG
Almeida, RKS
Wanderley, AF
Ferreira, UVS
Arakaki, LNH
Simoni, JA
Airoldi, C
Abstract: Polar n-alkylmonoamines of general formula H(3)C(CH(2)) (n) NH(2) (n = 1, 3, 5) interacted with layered silicate vermiculite at the solid/liquid interface. The maximum amount of amine intercalated (N (f) ) inside the interlamellar space were 0.62, 0.46, and 0.38 mmol g(-1), to give the following order of intercalation ethyl -> butyl -> hexylamines. The layered vermiculite solid was suspended in deionized water and calorimetrically titrated with this series of amines, to give favorable thermodynamic data, such as exothermic enthalpy, negative Gibbs free energy and positive entropy data.
Subject: Aliphatic amine
Layered silicate
Country: Holanda
Editor: Springer
Citation: Journal Of Thermal Analysis And Calorimetry. Springer, v. 97, n. 2, n. 453, n. 457, 2009.
Rights: fechado
Identifier DOI: 10.1007/s10973-009-0220-3
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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