Effects of Fe dopants and residual carbonates on the catalytic activities of the perovskite-type La0.7Sr0.3Co1-xFexO3 NOx storage catalyst
Ma, AJ; Wang, SZ; Liu, C; Xian, H; Ding, Q; Guo, L; Meng, M; Tan, YS; Tsubaki, N; Zhang, J; Zheng, LR; Li, XG;张静; Zheng LR(郑黎荣)
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
2014
卷号146期号:SI页码:24-34
关键词Perovskite Fe dopant Carbonates NOx storage Sulfur tolerance
学科分类Chemistry; Engineering
DOI10.1016/j.apcatb.2013.06.005
英文摘要Herein, we reported the NOx storage capacity, NO oxidation ability and sulfur resistance of the La0.7Sr0.3CoO3-based perovskite-type catalysts. NO could be readily oxidized to NO2 with around 83% of NO-to-NO2 conversion at 300 degrees C over the perovskite. After sulfation, the NSC of the La0.7Sr0.3CoO3 catalyst calcined in static air decreased 58.0%. Nevertheless, a significant improvement of the sulfur tolerance could be achieved through partial substitution of Co with Fe cations, as well as calcination in flowing air. The NSC of the pre-sulfated La0.7Sr0.3Co0.8Fe0.2O3 catalyst maintained 360.7 mu mol/g and dropped only 6.4% as compared with the fresh one. The XPS results confirmed the presence of Fe-2(SO4)(3) in the sulfated La0.7Sr0.3Co0.8Fe0.2O3 catalyst. The EXAFS results further revealed that the formation of Fe-2(SO4)(3) in the perovskite inhibited the sulfation of neighboring strontium from the viewpoint of the local atomic level. These findings strongly suggest that the La0.7Sr0.3Co0.8Fe0.2O3 perovskite is a possible NOx absorber used for aftertreament systems upon lean-burn engines with the advantages of the excellent NO oxidation ability, NOx storage capacity and the high sulfur tolerance. (C) 2013 Elsevier B.V. All rights reserved.
收录类别SCI
WOS记录号WOS:000327904000004
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224818
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
推荐引用方式
GB/T 7714
Ma, AJ,Wang, SZ,Liu, C,et al. Effects of Fe dopants and residual carbonates on the catalytic activities of the perovskite-type La0.7Sr0.3Co1-xFexO3 NOx storage catalyst[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2014,146(SI):24-34.
APA Ma, AJ.,Wang, SZ.,Liu, C.,Xian, H.,Ding, Q.,...&郑黎荣.(2014).Effects of Fe dopants and residual carbonates on the catalytic activities of the perovskite-type La0.7Sr0.3Co1-xFexO3 NOx storage catalyst.APPLIED CATALYSIS B-ENVIRONMENTAL,146(SI),24-34.
MLA Ma, AJ,et al."Effects of Fe dopants and residual carbonates on the catalytic activities of the perovskite-type La0.7Sr0.3Co1-xFexO3 NOx storage catalyst".APPLIED CATALYSIS B-ENVIRONMENTAL 146.SI(2014):24-34.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
10690.pdf(1759KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ma, AJ]的文章
[Wang, SZ]的文章
[Liu, C]的文章
百度学术
百度学术中相似的文章
[Ma, AJ]的文章
[Wang, SZ]的文章
[Liu, C]的文章
必应学术
必应学术中相似的文章
[Ma, AJ]的文章
[Wang, SZ]的文章
[Liu, C]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 10690.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。