Hostname: page-component-848d4c4894-sjtt6 Total loading time: 0 Render date: 2024-07-07T05:44:28.876Z Has data issue: false hasContentIssue false
  • English
  • Français

Energy-Filtered Imaging of Zirconia Pillars in Montmorillonite

Published online by Cambridge University Press:  02 July 2020

P. A. Crazier ,
M. Pan ,
C. Bateman ,
J. J. Alcaraz  and
J. S. Holmgren
P. A. Crazier
Affiliation:
Center for Solid State Science, Arizona State University, Tempe, AZ85287-1704
M. Pan
Affiliation:
Gatan Inc., 5933 Coronado Lane, Pleasanton, CA94588.
C. Bateman
Affiliation:
Northboro R&D Center, Saint-Gobain Norton, Northboro, MA01532
J. J. Alcaraz
Affiliation:
UOP, 50 East Algonquin Rd, Des Plaines, IL, 60017-5016
J. S. Holmgren
Affiliation:
UOP, 50 East Algonquin Rd, Des Plaines, IL, 60017-5016
Get access

Extract

The ability to vary the plane spacing in different clays is becoming increasingly important in catalysis and other technological applications [Baker and Murrell, 1990]. Considerable effort is now being devoted to understanding the mechanisms involved in pillaring such materials with a view to being able to fine-tune parameters such as the plane spacing and active sites for the application of interest. We have been able to use analytical electron microscopy to directly image the pillars in zirconia pillared montmorillonite. By using a combination of TEM techniques, we are able to correlate morphological information with elemental composition and conclusively identify the location of the zirconia pillars.

A sample of natural montmorillonite clay, trade name HPM-20, was obtained from American Colloid and used as received. Zirconia pillared clays were prepared following published procedures [Bartley, 1988]. The Z1O2 pillars were prepared by using hydroxyzirconium cations produced by the solvation of zironyl chloride.

Type
Nanophase and Amorphous Materials
Information
Microscopy and Microanalysis , Volume 4 , Issue S2: Proceedings: Microscopy & Microanalysis '98, Microscopy Society of America 56th Annual Meeting, Microbeam Analysis Society 32nd Annual Meeting, Atlanta, Georgia July 12-16, 1998 , July 1998 , pp. 744 - 745
Copyright
Copyright © Microscopy Society of America

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

1.Baker, R.T.K., and Murrell, L. (1990). Novel Materials in Heterogeneous Catalysts. American Chemical Society Symposium Series, 437.CrossRefGoogle Scholar
2.Bartley, G. J., 1988). Zirconium Pillared Clays. Catal.Today, 2, 233.Google Scholar
3.Crazier, P. A., (1995). Quantitative Elemental Mapping of Materials by Energy-Filtered Imaging. Ultramicroscopy, 58, 157–174.CrossRefGoogle Scholar
4. Funding was provided by UOP and the Industrial Associates Program of Arizona State University(ASU) and the project was performed in the Center for HREM at ASU.Google Scholar