ausblenden:
Sprache(n):
eng - English
Datum:
2007-06-192001
Publikationsstatus:
Erschienen
Seiten:
-
Ort, Verlag, Ausgabe:
-
Inhaltsverzeichnis:
This chapter presents iron-modified zeolites and ordered mesoporous oxides as catalysts for the sulfur dioxide oxidation in sulfur-rich gases. Both zeolitic materials and mesoporous oxides exhibit very good activity in this reaction. Other than solid state or incipient wetness loaded MCM-41 materials, the zeolites do not show an initial loss of activity. However, they loose activity upon prolonged exposure to reaction conditions around 700°C. The zeolitic samples are analyzed through X-ray absorption spectroscopy, and the deactivation could be related to the removal of iron from framework sites to result in the formation of hematite-like species. If the iron can be stabilized in the framework, these materials could be an interesting alternative to other iron-based catalysts for the commercial application in sulfur-rich gases.
Art der Begutachtung:
Expertenbegutachtung
Art des Abschluß:
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