Hierarchical Fe-ZSM-5 with nano-single-unit-cell for removal of nitrogen oxides |
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| Authors: | Z-F Yan K He J-S Zhao X-R Lou |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province, China;2. College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province, China |
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| Abstract: | Nano-single-unit-cell hierarchical Fe-ZSM-5 (designated NSUCH Fe-ZSM-5) was successfully synthesized and characterized by X-ray diffraction, scanning electron microscope, transmission electron micrographs, inductive coupled plasma emission spectrometer, and X-ray photoelectron spectroscopy techniques. NSUCH Fe-ZSM-5 exhibits great lamellar crystal structure and Fe species are present in the form of crystalline γ-Fe2O3. Most of the Fe species got into mesoporous zeolite channels, presenting in a well-dispersed state. The adsorbed oxygen on an external surface is a benefit for the NH3-NO selective catalytic reduction reaction. The catalytic behaviors for removal of nitrogen oxides reveal that NSUCH Fe-ZSM-5 displays better activity than conventional Fe-ZSM-5 during the temperatures of 250–400°C. |
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| Keywords: | Adsorbed oxygen γ-Fe2O3 hierarchical Fe-ZSM-5 NO selective catalytic reduction |
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