Abstract
Fe-Ba/ZSM-5 catalysts were prepared for NO + O2 adsorption and NO reduction by CO at 250–400 °C. NO adsorption and reduction were investigated for different Fe contents, while the Ba content was fixed at 5 wt.%. The catalysts were characterized by BET, SEM, XRD, XPS, H2-TPD, and in situ DRIFTS. The NO + CO activity tests of Fe-Ba/ZSM-5 catalysts showed that the NO reduction efficiencies were strongly affected by temperature. The NOx adsorption capacity of Fe-Ba/ZSM-5 catalysts increased with increasing Fe loading. The results of catalyst characterization showed that the dispersion of Fe species is one of the most important factors affecting NO reduction and adsorption performance. High Fe loading increased the amount of adsorbed NOx, while the NO + CO reaction was favored by good dispersion of Fe species. However, the NOx adsorption capacity decreased for Fe loadings above 8.3% due to the aggregation of metal oxides.
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 callDisclaimer: 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.
