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Language(s):
eng - English
Dates:
2007-06-192001
Publication Status:
Issued
Pages:
-
Publishing info:
-
Table of Contents:
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.
Rev. Type:
Peer
Degree:
-
