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学科主题物理化学
Identification of the Crystallographic Sites of Ir in BaIr0.2FeAl10.8O19 Hexaaluminate
Zhu, Yanyan1; Wang, Xiaodong1; Huang, Yanqiang1; Zhang, Yan1,2; Wu, Guotao1; Wang, Junhu1; Zhang, Tao1; Wang XD(王晓东); Zhang T(张涛)
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2012-11-22
DOI10.1021/jp3007238
116期:46页:24487-24495
收录类别SCI
文章类型Article
部门归属15
项目归属1501
产权排名1,1
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]TEMPERATURE CATALYTIC COMBUSTION ; NITROUS-OXIDE ; BARIUM HEXAALUMINATE ; N2O DECOMPOSITION ; CRYSTAL-STRUCTURE ; BETA-ALUMINA ; PARTIAL OXIDATION ; FE ; MOSSBAUER ; METHANE
英文摘要Noble metal ions in hexaaluminate structure are generally regarded as active centers for a variety of reactions, but their chemical states are still not clear for lack of effective characterization techniques. In this paper, in comparison with BaFeAl11O19, the crystallographic site of Ir in BaIr0.2FeAl10.8O19 hexaaluminate with Ba-beta(1)-Al2O3 structure was identified by Rietveld refinement and Fe-57 Mossbauer spectroscopy. In the BaIr0.2FeAl10.8O19 hexaaluminate structure, Fe occupied both the symmetric tetrahedral Al(2) sites in the spinel block and the distorted tetrahedral interstitial Al(5) sites in the mirror plane. In contrast to Fe, the framework Ir ions only occupied the distorted tetrahedral interstitial Al(5) sites in the loosely packed mirror plane, which originated from Ir ions in oxidic entities dispersed on the Ba-modified gamma-Al2O3 in the precursor. Ir ions in the Al(5) sites were highly active for N2O decomposition.
语种英语
WOS记录号WOS:000311461100012
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/118198
专题中国科学院大连化学物理研究所
通讯作者Wang XD(王晓东); Zhang T(张涛)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Zhu, Yanyan,Wang, Xiaodong,Huang, Yanqiang,et al. Identification of the Crystallographic Sites of Ir in BaIr0.2FeAl10.8O19 Hexaaluminate[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2012,116(46):24487-24495.
APA Zhu, Yanyan.,Wang, Xiaodong.,Huang, Yanqiang.,Zhang, Yan.,Wu, Guotao.,...&张涛.(2012).Identification of the Crystallographic Sites of Ir in BaIr0.2FeAl10.8O19 Hexaaluminate.JOURNAL OF PHYSICAL CHEMISTRY C,116(46),24487-24495.
MLA Zhu, Yanyan,et al."Identification of the Crystallographic Sites of Ir in BaIr0.2FeAl10.8O19 Hexaaluminate".JOURNAL OF PHYSICAL CHEMISTRY C 116.46(2012):24487-24495.
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