Thermal stability studies of zeolites A and X synthesized from South African coal fly ash

Thermal stability studies of zeolites A and X synthesized from South African coal fly ash The thermal stability of zeolites A and X synthesized from coal fly ash was studied by evaluation of TGA–DTA curves obtained on increasing the temperature and by in-situ temperature-programmed XRD analysis. It was found that zeolites A and X were both stable up to approximately 800 °C and retained their characteristic diffraction peaks up to 440 °C, meaning the crystal structure was still stable. Of particular interest was that zeolite X, which has a unique hierarchical morphology, was thermally stable and was, hence, suitable for applications requiring elevated temperatures, for example catalysis and pollution control. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Thermal stability studies of zeolites A and X synthesized from South African coal fly ash

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Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1211-3
Publisher site
See Article on Publisher Site

Abstract

The thermal stability of zeolites A and X synthesized from coal fly ash was studied by evaluation of TGA–DTA curves obtained on increasing the temperature and by in-situ temperature-programmed XRD analysis. It was found that zeolites A and X were both stable up to approximately 800 °C and retained their characteristic diffraction peaks up to 440 °C, meaning the crystal structure was still stable. Of particular interest was that zeolite X, which has a unique hierarchical morphology, was thermally stable and was, hence, suitable for applications requiring elevated temperatures, for example catalysis and pollution control.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: May 10, 2013

References

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