1. Effect of Fe precursors on the catalytic activity of Fe/SAPO-34 catalysts for N2O decomposition.
- Author
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Zhang, Tao, Qin, Xuan, Peng, Yue, Wang, Chizhong, Chang, Huazhen, Chen, Jianjun, and Li, Junhua
- Subjects
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CATALYTIC activity , *ELECTRON paramagnetic resonance , *CATALYSTS , *TEMPERATURE-programmed reduction , *ULTRAVIOLET-visible spectroscopy , *THERMAL desorption - Abstract
Different Fe/SAPO-34 catalysts were prepared by a solid-state ion exchange method and used to catalyze N 2 O decomposition. The catalytic performance of these catalysts was strongly related to their Fe precursors. Relevant characterization was carried out using X-ray diffraction, N 2 adsorption-desorption, UV–vis spectroscopy, electron paramagnetic resonance, and H 2 temperature-programmed reduction. The data indicated that the nature and distribution of Fe species in the catalysts changed with different Fe precursors used. Furthermore, monomeric Fe3+ ions and small oligomeric Fe x O y were the active Fe species for the Fe/SAPO-34 catalysts. Finally, it is reasonable to speculate that such a Fe source effect could be explored for other reactions. Unlabelled Image • N 2 O decomposition over Fe/SAPO-34 using different Fe precursors was first investigated. • The distribution of Fe species in the catalysts changed with different Fe precursors used. • Monomeric Fe3+ ions and small oligomeric Fe x O y were the active Fe species. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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