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Title: Thermal stability of sol--gel-derived porous AM-Al{sub x}Zr mixed oxides

Abstract

The thermal stability of the Al-Zr mixed oxides has been studied over the whole range of composition. The effect of temperature treatment on porosity, crystallinity, and microstructure has been investigated (Ar adsorption isotherms, HR-TEM, EDX, XRD, DRIFTS). The effect of impregnation and doping on the temperature stability of these oxides is shown. An amorphous porous Al-Zr mixed oxide, stabilized with 5% Si oxide and whose microstructure is stable up to 1,400 C with no indication of phase separation or nanocrystal formation, was prepared. The study shows, that amorphous mixed oxides may be a promising new approach to the development of high-temperature stable porous materials, for example for the catalytic NOx removal from the exhaust gas from fossil fuel power plants.

Authors:
;
Publication Date:
Research Org.:
Max-Planck-Inst. fur Kohlenforschung, Ruhr (DE)
OSTI Identifier:
20001178
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 11; Journal Issue: 9; Other Information: PBD: Sep 1999; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 20 FOSSIL-FUELED POWER PLANTS; ZIRCONIUM OXIDES; ALUMINIUM OXIDES; HETEROGENEOUS CATALYSIS; TEMPERATURE DEPENDENCE; POROSITY; CRYSTAL STRUCTURE; MICROSTRUCTURE; FLUE GAS; DENITRIFICATION

Citation Formats

Klein, J., and Maier, W.F. Thermal stability of sol--gel-derived porous AM-Al{sub x}Zr mixed oxides. United States: N. p., 1999. Web. doi:10.1021/cm990280l.
Klein, J., & Maier, W.F. Thermal stability of sol--gel-derived porous AM-Al{sub x}Zr mixed oxides. United States. doi:10.1021/cm990280l.
Klein, J., and Maier, W.F. Wed . "Thermal stability of sol--gel-derived porous AM-Al{sub x}Zr mixed oxides". United States. doi:10.1021/cm990280l.
@article{osti_20001178,
title = {Thermal stability of sol--gel-derived porous AM-Al{sub x}Zr mixed oxides},
author = {Klein, J. and Maier, W.F.},
abstractNote = {The thermal stability of the Al-Zr mixed oxides has been studied over the whole range of composition. The effect of temperature treatment on porosity, crystallinity, and microstructure has been investigated (Ar adsorption isotherms, HR-TEM, EDX, XRD, DRIFTS). The effect of impregnation and doping on the temperature stability of these oxides is shown. An amorphous porous Al-Zr mixed oxide, stabilized with 5% Si oxide and whose microstructure is stable up to 1,400 C with no indication of phase separation or nanocrystal formation, was prepared. The study shows, that amorphous mixed oxides may be a promising new approach to the development of high-temperature stable porous materials, for example for the catalytic NOx removal from the exhaust gas from fossil fuel power plants.},
doi = {10.1021/cm990280l},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 9,
volume = 11,
place = {United States},
year = {1999},
month = {9}
}