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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.

[ Last edited by ÍõÏþÃÈ on 2013-6-10 at 23:29 ]
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