Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-29T03:52:49.688Z Has data issue: false hasContentIssue false
  • English
  • Français

Electron Energy Loss Spectroscopy Study of ZSM-5 Zeolite and MCM-41 Mesoporous Materials

Published online by Cambridge University Press:  02 July 2020

F. Paraguay D ,
M. Miki-Yoshida ,
F. Espinosa-Magaña ,
E. Terrés  and
J.M. Dominguez
F. Paraguay D
Affiliation:
Centro de Investigatión en Materiales Avanzados, S. C., Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua, Chih., 31109, Mexico.
M. Miki-Yoshida
Affiliation:
Centro de Investigatión en Materiales Avanzados, S. C., Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua, Chih., 31109, Mexico.
F. Espinosa-Magaña
Affiliation:
Centro de Investigatión en Materiales Avanzados, S. C., Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua, Chih., 31109, Mexico.
E. Terrés
Affiliation:
Instituto Mexicano del Petróleo, Programa de Simulatión Molecular. Eje Central LázaroCárdenas 152, CP, 07730, MexicoD.F.
J.M. Dominguez
Affiliation:
Instituto Mexicano del Petróleo, Programa de Simulatión Molecular. Eje Central LázaroCárdenas 152, CP, 07730, MexicoD.F.
Get access

Abstract

Zeolites are crystalline aluminosilicates possessing a regular microporous channel network. Unique properties of zeolites such as the presence of framework cations, acid sites, and their well-defined porous structure-with pore sizes similar to those of small molecules-account for their traditional utilization in ion exchange, catalysis, and separation. in addition, zeolites are being investigated for novel emerging applications in a diversity of areas including optoelectronic devices and reactive membranes because they provide for discrimination, recognition, and organization of molecules with a precision of less 1 Å. However, their applications are limited by the relatively small pore openings; therefore, pore enlargement was one of the main aspects in zeolite chemistry. A new class of porous materials, which contain large uniform spaces in the mesopore size regimen (15-100 Å), was reported. These so-called mesoporous materials have two different characters, disorder at the atomic scale but long range order at the atomic scale but long range order at the mesoscopic scale.

Type
Characterization of Catalysts (Organized by S. Bradley)
Information
Microscopy and Microanalysis , Volume 7 , Issue S2: Proceedings: Microscopy & Microanalysis 2001, Microscopy Society of America 59th Annual Meeting, Microbeam Analysis Society 35th Annual Meeting, Long Beach, California August 5-9, 2001 , August 2001 , pp. 1072 - 1073
Copyright
Copyright © Microscopy Society of America 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

references

1.C. Lovallo, Mark and Tsapatsis, Michael, Advanced Catalysts and Nanostructured Materials, Academic Press. Inc. (1996).Google Scholar
2.Kresge, C. T.et al., Nature 359 (1992), 10835CrossRefGoogle Scholar
3.Beck, J. S.et al., J. Am. Chem. Soc. 114 (1992), 10835CrossRefGoogle Scholar
4.De Crescenzi, M., Surf. Sci. Reports, 21 (1995)Google Scholar
5.Egerton, R. F., Electron Energy-Loss Spectroscopy, Plenum Press, New York 1996CrossRefGoogle Scholar