Effect of Fe precursors on the catalytic activity of Fe/SAPO-34 catalysts for N2O decomposition

被引：23
作者：
Zhang, Tao [1 ]
Qin, Xuan [1 ]
Peng, Yue [2 ]
Wang, Chizhong [2 ]
Chang, Huazhen [1 ]
Chen, Jianjun [2 ]
Li, Junhua [2 ]
机构：
[1] Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China
[2] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2019年 / 128卷
关键词：
N2O decomposition; Fe/SAPO-34; Fe precursor; Active species; Low-temperature reducibility; NITROUS-OXIDE; NOBLE-METAL; IRON; REDUCTION; SITES; PERFORMANCE; MECHANISM; ZEOLITES; NOX; CU/SAPO-34;
D O I：
10.1016/j.catcom.2019.05.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Different Fe/SAPO-34 catalysts were prepared by a solid-state ion exchange method and used to catalyze N2O 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 FexOy 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.
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页数：5
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