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题名: Perovskite Oxide Absorbents for Oxygen Separation
作者: He, Yufeng1, 2;  Zhu, Xuefeng1;  Li, Qiming1, 2;  Yang, Weishen1
通讯作者: 杨维慎
关键词: Ba(1-x)Sr(x)Co(0.8)Fe(0.2)O(3-delta) ;  perovskite oxides ;  oxygen absorption/desorption ;  ionic radius
刊名: AICHE JOURNAL
发表日期: 2009-12-01
DOI: 10.1002/aic.11931
卷: 55, 期:12, 页:3125-3133
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 504
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: The fixed-bed oxygen absorption processes of the series of Ba(1-x)Sr(x)Co(0.8)Fe(0.2)O(3-delta) oxides were studied by oxygen partial pressure swing absorption in the temperature range of 300-850 degrees C. The results show that Ba(1-x)Sr(x)Co(0.8)Fe(0.2)O(3-delta), with the smallest A-site ion radius, has the largest oxygen absorption capacity (0.402 mmol/g) at 500 degrees C. The oxygen absorption and desorption kinetics fit well with the pseudo-second-order kinetics model. Comparing the modeling absorption rate coefficient k(2) with the desorption rate coefficient k(2)', all the oxides studied had higher oxygen absorption rates than oxygen desorption ones. In addition, the combined results of X-ray diffraction analysis, O(2)-TPD, room temperature iodometric titration, and thermogravimetric analysis explained the relationship between the oxygen absorption capacities and the average radii of the A-site ions for this series of Ba(1-x)Sr(x)Co(0.8)Fe(0.2)O(3-delta) in the temperature range of 300-600 degrees C. (C) 2009 American Institute of Chemical Engineers AIChE J, 55: 3125-3133, 2009
关键词[WOS]: LANTHANUM COBALTITE PEROVSKITE ;  DENSE CERAMIC MEMBRANES ;  HIGH-TEMPERATURE ;  AIR SEPARATION ;  PERMEATION PROPERTIES ;  SORPTIVE PROPERTIES ;  A-SITE ;  EQUILIBRIUM ;  ADSORPTION ;  STABILITY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000272314400010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/102969
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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 Sch, Beijing 100049, Peoples R China

Recommended Citation:
He, Yufeng,Zhu, Xuefeng,Li, Qiming,et al. Perovskite Oxide Absorbents for Oxygen Separation[J]. AICHE JOURNAL,2009,55(12):3125-3133.
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