INVESTIGADORES
ULLA Maria Alicia Del H.
artículos
Título:
Synthesis and characterization of ZSM-5 coatings onto cordierite honeycomb supports
Autor/es:
M. A. ULLA; R. MALLADA; J. CORONAS; L. B. GUTIERREZ; E. E. MIRÓ; J. SANTAMARÍA
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2003 vol. 253 p. 257 - 269
ISSN:
0926-860X
Resumen:
Zeolite ZSM-5 layers (up to ca. 30% by weight) have been synthesized on cordierite substrates, following either a direct hydrothermal synthesis procedure or a secondary growth method, in this case after seeding of the support. The Si/Al ratio in the synthesis gel ranged from 14 to 100, but layers with a high Al content (i.e. a low Si/Al ratio) could not be prepared directly on the cordierite support. However, MFI layers with a low Si/Al ratio were readily grown after depositing an intermediate Si-rich layer. The results also show that the Si/Al ratio of the synthesis gel has a direct effect on the morphology, crystallinity and orientation of the MFI layer formed.
