DICP OpenIR
Subject Area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)
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2012-11-22
DOI10.1021/jp3007238
Volume116Issue:46Pages:24487-24495
Indexed BySCI
SubtypeArticle
Department15
Funding Project1501
Contribution Rank1,1
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordTEMPERATURE CATALYTIC COMBUSTION ; NITROUS-OXIDE ; BARIUM HEXAALUMINATE ; N2O DECOMPOSITION ; CRYSTAL-STRUCTURE ; BETA-ALUMINA ; PARTIAL OXIDATION ; FE ; MOSSBAUER ; METHANE
AbstractNoble 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.
Language英语
WOS IDWOS:000311461100012
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/118198
Collection中国科学院大连化学物理研究所
Corresponding AuthorWang XD(王晓东); Zhang T(张涛)
Affiliation1.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
Recommended Citation
GB/T 7714
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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