Abstract
Simultaneous flue gas desulfurization and denitrification were achieved with OH radicals from the decomposition of H2O2 over hematite (Fe) as well as hematite supported on alumina (Fe–Al) and anatase (Fe–Ti). Under all conditions, SO2 achieved 100% removal, whereas NOX removal varies with the catalysts. The supporting of Fe over aluminum enhances the catalytic removal of NOX, whereas that of anatase presents negative effect. The NOX removal is determined by the decomposition rate of H2O2 into OH radicals over OH bonded with Fe (Fe–OH). The supporting of Fe over alumina enhances the content of Fe–OH and the points of zero charge (PZC) values, which are beneficial for the production of OH radicals. The supporting of Fe over anatase results in the formation of FeOTi, which cannot decompose H2O2 into OH radicals. Furthermore, H2O2 tends more to be reacted with TiOH to produce O2 over Fe–Ti. Finally, the enhancement mechanism of H2O2 decomposition over Fe-based catalysts is speculated. It has a contribution to the correct choice for supports and active ingredients of the catalyst in the future industrial applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callSimilar Papers
More From: Applied Surface Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
