INVESTIGADORES
LABORDE Miguel Angel
artículos
Título:
Steam and acid dealumination of mordenite. Characterization and influence on the catalytic performance in linear alkylbenzene synthesis
Autor/es:
M. BOVERI ; C. MARQUEZ ALVAREZ; M. LABORDE; E. SASTRE
Revista:
CATALYSIS TODAY
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2006 vol. 114 p. 217 - 225
ISSN:
0920-5861
Resumen:
A systematic study of both acid and steam dealumination of mordenite has been carried out aiming to obtain a mordenite featuring high acid strength active sites along with a secondary mesoporous system, in order to maximize both catalytic performance and time-on-stream stability of the material in solid-acid catalyzed alkylation of benzene with 1-dodecene. Detailed assessment of the textural (XRD, N2 adsorption/ desorption)and acid (FTIR of pyridine adsorption) properties of the obtained materials was performed.It has been found that catalysts obtained by combined steam dealumination and acid washing show a dramatic increase in the intrinsic activity and a significantly lower tendency to suffer deactivation when compared to the parent zeolite and samples obtained by acid treatments. This improved behaviour of the steam-treated sample is attributed to its increased mesoporous surface area, lower acid sites concentration and less hydrophilic surface.
