Performance of Fe-Ba/ZSM-5 catalysts in NO + O2 adsorption and NO plus CO reduction

被引：38
作者：
Zhang, Xingyu [1 ,2 ]
Ma, Chunyuan [1 ,2 ]
Cheng, Xingxing [1 ,2 ]
Wang, Zhiqiang [1 ,2 ]
机构：
[1] Shandong Univ, Natl Engn Lab Coal Fired Pollutants Emiss Reduct, Jinan 250061, Peoples R China
[2] Shandong Univ, Prov Key Lab Energy Carbon Reduct & Resource Util, Jinan 250061, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Fe-Ba/ZSM-5; Adsorption capacity; Catalytic activity; CO; Fe species distribution; NITROGEN-OXIDES; FE-ZSM-5; CATALYSTS; IN-SITU; DIRECT DECOMPOSITION; SELECTIVE REDUCTION; ZEOLITE CATALYSTS; FE CONTENT; CO; ADSORPTION; MECHANISM;
D O I：
10.1016/j.ijhydene.2017.01.067
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：
Fe-Ba/ZSM-5 catalysts were prepared for NO + O-2 adsorption and NO reduction by CO at 250-400 degrees 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, H-2-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 NO 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 NO adsorption capacity decreased for Fe loadings above 8.3% due to the aggregation of metal oxides. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：7077 / 7088
页数：12
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