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Type: Artigo de periódico
Title: Vermiculite as a useful host for guest cyclic aliphatic amine intercalation, followed by cation adsorption
Author: da Fonseca, MG
Almeida, RKS
Arakaki, LNH
Espinola, JGP
Airoldi, C
Abstract: Two vermiculite hybrids containing aliphatic amines intercalated were synthesized. The amount of guest molecules intercalated resulted in 0.60 and 0.52 mmol g(-1) for pyperidine and pyperazine, respectively, which reflect the effectiveness of such kind of reactions. The processes were confirmed by elemental analysis and infrared spectroscopy. X-ray diffraction patterns suggested that the original crystallinity of matrix was maintained, however, the intercalation process is associated with the conformation of the guest molecule and the presence of the compensate cation inside the interlayer cavity. The intercalated inorganic hosts adsorb divalent lead, nickel, copper and cobalt cations, more effectively at basic pH value, from aqueous solution, which content of adsorption is higher than the precursor native vermiculite. (c) 2006 Elsevier B,V. All rights reserved.
Subject: intercalation
inorganic-organic hybrid
Country: Holanda
Editor: Elsevier Science Bv
Citation: Colloids And Surfaces A-physicochemical And Engineering Aspects. Elsevier Science Bv, v. 280, n. 41699, n. 39, n. 44, 2006.
Rights: fechado
Identifier DOI: 10.1016/j.colsurfa.2006.01.020
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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