Por favor, use este identificador para citar o enlazar este ítem: https://hdl.handle.net/20.500.12104/65613
Título: Influence of the type of sepiolite on the modification of the pore-size distribution in γ-Al2O3 supports
Autor: Barrera, A.
Muramatsu, K.
Viveros, T.
Gomez, S.
Montoya, J.A.
del Angel, P.
Perez, G.
Campa-Molina, J.
Fecha de publicación: 2009
Resumen: γ-Al2O3 modified supports with bimodal pore-size distributions were prepared by the addition of different types of natural sepiolites (α or β) into alumina. The supports were characterized by nitrogen physisorption, mercury porosimetry, X-ray diffraction, HRTEM and DTA techniques. A wide range of SBET (94-238 m2 g- 1), pore volumes (0.3-0.82 cm3 g- 1), and pore sizes were obtained in the supports depending on the type of sepiolite and its concentration added into alumina. The pore sizes were distributed as follows: mesopores around 1.8 nm in radius, mesopores in the radius range 3.0-25 nm and macropores between 25 and 300 nm in radius. The shape of the pore-size distributions depended on the type of sepiolite: the modal peak for pores larger than 3.0 nm was broad with β-type sepiolites and narrow with α-type sepiolites. The mesopore and macropore sizes can be controlled by the type of sepiolite as well as its concentration added to alumina. © 2008 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/20.500.12104/65613
Aparece en las colecciones:Producción científica UdeG (prueba)

Ficheros en este ítem:
No hay ficheros asociados a este ítem.


Los ítems de RIUdeG están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.