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

被引：20

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.

引用

页数：5

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