DICP OpenIR
Identification of the chemical state of Fe in barium hexaaluminate using Rietveld refinement and Fe-57 Mossbauer spectroscopy
Zhu, Yanyan1,2; Wang, Xiaodong1; Wang, Aiqin1; Wu, Guotao1; Wang, Junhu1; Zhang, Tao1
关键词Hexaaluminate Chemical State Of Fe Rietveld Refinement Mossbauer Spectroscopy N2o Decomposition
刊名JOURNAL OF CATALYSIS
2011-10-27
DOI10.1016/j.jcat.2011.08.001
283期:2页:149-160
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]TEMPERATURE CATALYTIC COMBUSTION ; NITROUS-OXIDE DECOMPOSITION ; DENSITY-FUNCTIONAL THEORY ; CRYSTAL-STRUCTURE ; BETA-ALUMINA ; N2O DECOMPOSITION ; PARTIAL OXIDATION ; SUBSTITUTED BA-BETA-AL2O3 ; CATION VALENCE ; METHANE
英文摘要The catalytic activity of hexaaluminate is closely related to the chemical state of substituted active metal ions. In this paper, the mechanism of stabilization of Fe ions in beta(1)-Al2O3 and magnetoplumbite-type Fe-substituted Ba hexaaluminates was proposed at the molecule level on the basis of X-ray diffraction, Rietveld refinement, and Mossbauer spectroscopy. Fe3+ ions originated from oxidic entities dispersed on Ba-modified gamma-Al2O3 mainly entered into the sites in the loosely packed mirror plane of the hexaaluminates. In particular, Fe3+ ions at low concentration preferentially occupied the tetrahedral Al(5) sites of the beta(1)-Al2O3 phase, while Fe3+ ions at high concentration mainly occupied the trigonal bipyramidal Al(5) and octahedral Al(3) sites in the magnetoplumbite phase. Meanwhile, tetrahedral Fe3+ ions in the intermediate spinel-type BaAl2O4 phase preferentially entered into the tetrahedral Al(2) sites in the spinel block of hexaaluminates. Fe ions in the Al(5) sites of beta(1)-Al2O3 and the Al(3) sites of magnetoplumbite phase were highly active for N2O decomposition. (C) 2011 Elsevier Inc. All rights reserved.
语种英语
WOS记录号WOS:000296678500005
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142301
专题中国科学院大连化学物理研究所
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
推荐引用方式
GB/T 7714
Zhu, Yanyan,Wang, Xiaodong,Wang, Aiqin,et al. Identification of the chemical state of Fe in barium hexaaluminate using Rietveld refinement and Fe-57 Mossbauer spectroscopy[J]. JOURNAL OF CATALYSIS,2011,283(2):149-160.
APA Zhu, Yanyan,Wang, Xiaodong,Wang, Aiqin,Wu, Guotao,Wang, Junhu,&Zhang, Tao.(2011).Identification of the chemical state of Fe in barium hexaaluminate using Rietveld refinement and Fe-57 Mossbauer spectroscopy.JOURNAL OF CATALYSIS,283(2),149-160.
MLA Zhu, Yanyan,et al."Identification of the chemical state of Fe in barium hexaaluminate using Rietveld refinement and Fe-57 Mossbauer spectroscopy".JOURNAL OF CATALYSIS 283.2(2011):149-160.
条目包含的文件
条目无相关文件。
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
[Zhu, Yanyan]的文章
[Wang, Xiaodong]的文章
[Wang, Aiqin]的文章
百度学术
百度学术中相似的文章
[Zhu, Yanyan]的文章
[Wang, Xiaodong]的文章
[Wang, Aiqin]的文章
必应学术
必应学术中相似的文章
[Zhu, Yanyan]的文章
[Wang, Xiaodong]的文章
[Wang, Aiqin]的文章
相关权益政策
暂无数据
收藏/分享
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。