Stable zeolite-containing mesoporous aluminosilicates

Hidrobo, A; Retuert, J; Araya, P; Wolf, E


This paper presents the synthesis of mesoporous aluminosilicates from a hybrid organic-inorganic xerogel, using the chitosan biopolymer together with a hydrothermal treatment process as structural modeling tools. The properties of the material obtained point to an important role of the chitosan as a stabilizer of the structural lattice. In a second step, Zeolite ZSM-5 is incorporated into the material. This Zeolite is produced in situ by a hydrothermal synthesis process using tetrapropylammonium hydroxide. The final material has a surface area greater than 200 m2/g, with a pore diameter and volume of 190 Å and 1.15 cm3/g, respectively. By comparison with the characteristics of its blank parent sample, the role of the chitosan as a mesoporosity generator and stabilizer of the chitosan lattice incorporated in the precursor xerogel was established. Because of this property, the material has a good hydrothermal stability, in contrast with the material prepared without chitosan. This allows it to be considered as a potential catalyst for the transformation of large molecules.

Más información

Título según WOS: Stable zeolite-containing mesoporous aluminosilicates
Título según SCOPUS: Stable Zeolite-Containing Mesoporous Aluminosilicates
Título de la Revista: Journal of Porous Materials
Volumen: 10
Número: 4
Editorial: Springer
Fecha de publicación: 2003
Página de inicio: 231
Página final: 234
Idioma: English