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Artículo

Identification and quantification of the interaction mechanisms between the cationic surfactant HDTMA-Br and montmorillonite

Naranjo, Pablo MatiasIcon ; Sham, Edgardo LingIcon ; Rodriguez Castellón, Enrique; Torres Sanchez, Rosa MariaIcon ; Farfan Torres, Elsa MonicaIcon
Fecha de publicación: 04/2013
Editorial: Clay Minerals Society
Revista: Clays and Clay Minerals
ISSN: 0009-8604
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Físico-Química, Ciencia de los Polímeros, Electroquímica

Resumen

Using a montmorillonite and the cationic surfactant hexadecyltrimethylammonium bromide (HDTMABr), a series of organoclays were synthesized with progressively increasing surfactant loads of between 0.2 and 4.0 times the cation exchange capacity of the starting clay. Different experimental techniques were used (thermal techniques, XPS, zeta potential) for characterizing the solids. The results obtained allowed to distinguish between the fraction of surfactant adsorbed by strong interactions and the fraction adsorbed by weak interactions. Adsorption isotherms of each of these processes were constructed, and were then adjusted using the Langmuir and Dubinin-Radusquevich adsorption models. Three types of interaction between the surfactant and the clay were identified and described, qualitatively and quantitatively. Two of these interactions, strong and weak, involve the hexadecyltrimethylammonium cation (HDTMA+). The third is a weak interaction involving the ion pair HDTMA+Br-.
Palabras clave: Alkylammonium Molecules , Cationic Surfactant Hdtma-Br , Montmorillonite
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/4728
URL: http://ccm.geoscienceworld.org/content/61/2/98.short
URL: http://www.ingentaconnect.com/content/cms/ccm/2013/00000061/00000002/art00002
DOI: http://dx.doi.org/10.1346/CCMN.2013.0610208
Colecciones
Articulos(CCT - SALTA-JUJUY)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SALTA-JUJUY
Articulos(CETMIC)
Articulos de CENTRO TECNOL.DE REC.MINERALES Y CERAMICA (I)
Articulos(INIQUI)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Citación
Naranjo, Pablo Matias; Sham, Edgardo Ling; Rodriguez Castellón, Enrique; Torres Sanchez, Rosa Maria; Farfan Torres, Elsa Monica; Identification and quantification of the interaction mechanisms between the cationic surfactant HDTMA-Br and montmorillonite; Clay Minerals Society; Clays and Clay Minerals; 61; 2; 4-2013; 98-106
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