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Iron-containing SBA-15 as catalyst for partial oxidation of hydrogen sulfide

Paper ID Volume ID Publish Year Pages File Format Full-Text
54959 47033 2013 7 PDF Available
Title
Iron-containing SBA-15 as catalyst for partial oxidation of hydrogen sulfide
Abstract

A family of Fe-containing SBA-15 silica synthesized by a simple one-pot hydrothermal method was synthesized and tested in the hydrogen sulfide partial oxidation for sulfur production at 200 °C and atmospheric pressure. All these materials maintain the porous hexagonal structure of SBA-15 showing a good chemical and mechanical stability. Isolated Fe3+ species are mainly observed at high Si/Fe ratio (ca. 40). However, extra framework iron oligomers and/or aggregated iron oxide clusters are mainly observed for samples with Si/Fe ratio lower than 10. High H2S conversion and high selectivity to sulfur (higher than 99%), with very low selectivity to SO2 (lower than 0.5% at H2S conversion between 60 and 80%), have been achieved. Moreover, the TOF decreases when increasing the amount of iron in the catalysts.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (236 K)Download as PowerPoint slideHighlights► Fe-containing SBA-15 is active and selective in partial oxidation of hydrogen sulfide. ► Isolated Fe3+ species can be considered as active and selective sites. ► The presence of iron oxide particles decreases the productivity per iron atom. ► Minor changes at the surface of catalysts after catalytic tests are observed.

Keywords
SBA-15; H2S; Partial oxidation; Sulfur; Iron
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Iron-containing SBA-15 as catalyst for partial oxidation of hydrogen sulfide
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 210, 1 July 2013, Pages 117–123
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us