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Clays and Clay Minerals; April 2003; v. 51; no. 2; p. 168-171; DOI: 10.1346/CCMN.2003.0510206
© 2003 Clay Minerals Society
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Al-PILLARING OF SAPONITE WITH THE Al POLYCATION [Al13(OH)24 (H2O)24]15+ USING A NEW SYNTHETIC ROUTE

Miguel Angel Vicente1,* and Jean-François Lambert2

1 Departamento de Química Inorgánica, Universidad de Salamanca, Plaza de la Merced, s/n. 37008-Salamanca, Spain
2 Laboratoire de Reactivité de Surface, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 54, Casier 178, 75252 Paris Cedex 05, France

* E-mail address of corresponding author: mavicente{at}usal.es

The intercalation of a saponite with the Al polycation [Al13(OH)24(H2O)24]15+ is described. This polycation is obtained by reaction of alumina with Al chloride. The intercalation is achieved by reaction of very concentrated solutions of this polycation with the clay in powder form. Solids with a basal spacing of 18.9 Å were obtained in this way, stable up to 700°C (17.0 Å). The Langmuir surface area of the intercalated solid was 366 m2/g, and that value decreases to 119, 138 and 125 m2/g for the solids pillared at 500, 600 and 700°C, respectively.

Key Words: Al-pillaring • Nanocomposite • Pillared Clay • Saponite • Surface Area




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A. Aouad, A. Pineau, D. Tchoubar, and F. Bergaya
Al-PILLARED MONTMORILLONITE OBTAINED IN CONCENTRATED MEDIA. EFFECT OF THE ANIONS (NITRATE, SULFATE AND CHLORIDE) ASSOCIATED WITH THE Al SPECIES
Clays and Clay Minerals, October 1, 2006; 54(5): 626 - 637.
[Abstract] [Full Text] [PDF]


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