Influence of Chemical Surface Characteristics of Natural Zeolite on Catalytic Ozone Abatement

In this article, the effect of zeolite chemical surface properties on gaseous ozone removal was investigated. Zeolite samples with different surface chemical composition were prepared from a Chilean natural zeolite. Such treatments included acid de-alumination, and thermal treatment at 400 °C and 55...

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Bibliographic Details
Published in:Ozone: science & engineering 2011-07, Vol.33 (4), p.279-284
Main Authors: Valdés, Héctor, Padilla, Eder E., Zaror, Claudio A.
Format: Article
Language:English
Subjects:
Acid Sites
Applied sciences
Catalysis
Catalysts
Catalytic Decomposition
Chemical composition
Chemical Surface Properties
Contact
Exact sciences and technology
Lewis acid
Natural Zeolite
Ozone
Pollution
Surface properties
Zeolites
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Summary:In this article, the effect of zeolite chemical surface properties on gaseous ozone removal was investigated. Zeolite samples with different surface chemical composition were prepared from a Chilean natural zeolite. Such treatments included acid de-alumination, and thermal treatment at 400 °C and 550 °C prior to contact with ozone. Chemical modification of natural zeolite showed that the generation of new Lewis acid sites on zeolite surface increases ozone removal. It is concluded that Lewis acid sites present on zeolite surface play a key role enhancing the gaseous ozone elimination.
ISSN:0191-9512
1547-6545
DOI:10.1080/01919512.2011.581145