Performance Improvement of NOx-Storage BaO/Al2O3 by Using Barium Peroxide as the Precursor of BaO

被引：1
|
作者：
Wei-Zhen Li
Ke-Qiang Sun
Zhun Hu
Bo-Qing Xu
机构：
[1] Tsinghua University,Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry
来源：
Catalysis Letters | 2009年 / 132卷
关键词：
NO; storage reduction; Barium peroxide; Thermal stability; Barium aluminate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Comparison of barium peroxide, Ba(OH)2 and Ba(NO3)2 as the precursor of BaO for the preparation of NOx-storage BaO/Al2O3 material was carried out. The as prepared materials were calcined at 550 and 800 °C and characterized by N2 physisorption, XRD, Raman and FT-IR spectroscopy. Measurements of the NOx storage performances of these BaO/Al2O3 materials by NO2 adsorption and NOx-TPD experiments showed that the use of barium peroxide as the precursor of BaO inhibited the formation of BaAl2O4 and led to remarkable improvements in the thermal stability as well as NOx storage capacity of the final BaO/Al2O3 material calcined at 800 °C.
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页码：189 / 196
页数：7
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