Hidróxidos duplos lamelares: síntese, estrutura, propriedades e aplicações

The layered double hydroxides, known as anionic clays and represented by the general formula [M2+1-x M3+x (OH) 2]x+ Am-x/m·nH 2O, are a group of materials which are of much interest currently. They present a variety of potential applications as adsorbents, catalysts and catalyst support, ion-exchangers, antacids and as a polymer stabilizer. It is possible to obtain a broad variety of layered double hydroxides (LDHs), depending on the identity and ratio of the cations M2+ and M3+, as well as the interlamelar anion. The aim of this review is to give out some information about this class of materials, concerning to the synthesis, characterization, properties and applications.

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Bibliographic Details
Main Authors: Crepaldi,Eduardo Luis, Valim,João Barros
Format: Digital revista
Language:Portuguese
Published: Sociedade Brasileira de Química 1998
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000300011
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