INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
A durable ZSM-5/SS composite tubular membrane for the selective separation of p-xylene from its isomers
Autor/es:
ANA M. TARDITI, GABRIEL I. HOROWITZ, E. A. LOMBARDO
Revista:
JOURNAL OF MEMBRANE SCIENCE
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2006 vol. 281 p. 692 - 699
ISSN:
0376-7388
Resumen:
A ZSM-5 membrane synthesized on a stainless steel porous tube was used for the separation of p-xylene from its isomers, m- and o-xylene. The membrane was prepared by secondary growth on the outer surface of the support. The permeation regime through the membrane was described by a combination of adsorptiondiffusion steps. In order to examine the durability of the membrane, a sequence of three thermal cycles was conducted. N2 permeation measurements together with SEM observations were the tools used to detect whether or not cracks developed after exposure to the xylene isomers up to 400 ºC. After 1000 h on stream the membrane was selective to p-xylene, the N2 permeance fluxes remained unchanged, and the SEM micrographs did not reveal any discontinuity.
