Stabilization mechanism and crystallographic sites of Ru in Fe-promoted barium hexaaluminate under high-temperature condition for N2O decomposition

	Stabilization mechanism and crystallographic sites of Ru in Fe-promoted barium hexaaluminate under high-temperature condition for N2O decomposition
	Zhang, Yan 1,2; Wang, Xiaodong 1; Zhu, Yanyan 3; Zhang, Tao 1
刊名	applied catalysis b-environmental
	2013-01-17
卷号	129 页码:382-393
关键词	Stabilization of ruthenium Hexaaluminate Iron Rietveld refinement N2O decomposition
通讯作者	王晓东 ; 张涛
产权排序	待补充
合作状况	英
英文摘要	the stabilization of volatile ruthenium from catalysts at high temperatures is an important issue in both academia and industry. in this paper, ru-substituted barium hexaalumimates (baru0.2feal10.8o19) with beta(1)-al2o3 structure were prepared using the carbonates route and investigated for high-concentration of n2o decomposition. it was for the first time found that the evaporation of ruthenium species under high-temperature condition (1100-1200 degrees c) could be effectively suppressed by the addition of fe in the hexaaluminate precursor. fe promoted the formation of intermediate stable baruo3 phase, which greatly alleviated the evaporation of ru species during calcination, and thus allowed more ru species enter into the final sintering-resistant hexaaluminate lattice after high-temperature treatment. ru ions in the hexaaluminate structure only occupied the distorted tetrahedral interstitial al(5) sites in the loosely packed mirror plane, which originated from ru species in oxidic entities dispersed on the ba-modified gamma-al2o3 and the intermediate baruo3 in the precursors. ru ions in the al(5) sites were key factors responsible for the high activity of n2o decomposition. (c) 2012 elsevier b.v. all rights reserved.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; engineering, environmental ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	catalytic decomposition ; nitrous-oxide ; crystal-structure ; beta-alumina ; substituted ba-beta-al2o3 ; superior performance ; de-n2o performance ; partial oxidation ; ruthenium oxide ; cation valence
收录类别	SCI
资助信息	1，1
原文出处	393
语种	英语
WOS记录号	WOS:000312689500043
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119529]
专题	大连化学物理研究所_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 3.NW Univ Xian, Coll Chem Engn, Xian 710069, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yan,Wang, Xiaodong,Zhu, Yanyan,et al. Stabilization mechanism and crystallographic sites of Ru in Fe-promoted barium hexaaluminate under high-temperature condition for N2O decomposition[J]. applied catalysis b-environmental,2013,129:382-393.
APA	Zhang, Yan,Wang, Xiaodong,Zhu, Yanyan,&Zhang, Tao.(2013).Stabilization mechanism and crystallographic sites of Ru in Fe-promoted barium hexaaluminate under high-temperature condition for N2O decomposition.applied catalysis b-environmental,129,382-393.
MLA	Zhang, Yan,et al."Stabilization mechanism and crystallographic sites of Ru in Fe-promoted barium hexaaluminate under high-temperature condition for N2O decomposition".applied catalysis b-environmental 129(2013):382-393.