Role of cobalt on γ-Al2O3 based NOx storage catalyst

被引：2
作者：
Joo-Hyoung Park
Hyun Ju Cho
Sang Jun Park
In-Sik Nam
Gwon Koo Yeo
Jeong Ki Kil
Young Kee Youn
机构：
[1] Pohang University of Science and Technology,School of Environmental Science and Engineering/Department of Chemical Engineering
[2] Research & Development Division for Hyundai Motors Company & Kia Motors Corporation,undefined
来源：
Topics in Catalysis | 2007年 / 42-43卷
关键词：
NSR; NO; storage capacity; Co-containing catalyst; FTIR; XAFS;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Co/Pt/Ba/γ-Al2O3, Co/Ba/γ-Al2O3, Pt/Ba/γ-Al2O3, Co/Pt/γ-Al2O3, Ba/γ-Al2O3, Pt/γ-Al2O3, and Co/γ-Al2O3 type catalysts were prepared by a conventional impregnation method, and their NOx storage capacities were evaluated by colorimetric assay. Co-containing catalysts had a higher NOx storage capacity than that of Co-free counterparts. The role of each component, especially Co, for the catalysts prepared was investigated by using in-situ FTIR. The high NOx storage for Co-containing catalysts including Co/Ba/γ-Al2O3 and Co/Pt/Ba/γ-Al2O3 is mainly due to the formation of Co3O4 on the catalyst surface identified by XAFS.
引用
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页码：61 / 64
页数：3
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