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题名: Activity and leaching features of zinc-aluminum ferrites in catalytic wet oxidation of phenol
作者: Xu, Aihua;  Yang, Min;  Qiao, Ruiping;  Du, Hongzhang;  Sun, Chenglin
通讯作者: 孙承林
关键词: catalytic wet oxidation ;  phenol ;  leaching ;  spinel ;  iron ;  zinc
刊名: JOURNAL OF HAZARDOUS MATERIALS
发表日期: 2007-08-17
DOI: 10.1016/j.jhazmat.2007.01.026
卷: 147, 期:1-2, 页:449-456
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 902
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology ;  Life Sciences & Biomedicine
类目[WOS]: Engineering, Environmental ;  Engineering, Civil ;  Environmental Sciences
研究领域[WOS]: Engineering ;  Environmental Sciences & Ecology
英文摘要: A series of ZnFe2-xAlxO4 spinel type catalysts prepared by sol-gel method have been characterized and tested for catalytic wet oxidation (CWO) of phenol with pure oxygen. The iron species existed in these materials as aggregated iron oxide clusters and Fe3+ species in octahedral sites. With a decrease in iron content the concentration of the first iron species decreased and the latter increased. Complete phenol conversions and high chemical oxygen demand (COD) removals were obtained for all catalysts during phenol degradation at mild reaction conditions (160 degrees C and 1.0 MPa of oxygen pressure). Increasing with the concentration of Fe3+ species in octahedral sites, induction period became significantly shortened. After phenol was completely degraded, the concomitant recycling of the leaching Fe3+ ions back to the catalyst surface was observed, and in this case it is possible to perforrn successful CWO reactions with some cycles. It is also suggested that during the reaction the Fe3+ cations coordinated in octahedral sites in the ZnFe2-xAlxO4 catalysts are resistant to acid leaching, but the reduced Fe3+ cations become much more labile, leading to increased Fe leaching. (C) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: HYDROTALCITE-LIKE PRECURSORS ;  PHOTO-FENTON DEGRADATION ;  AQUEOUS-SOLUTIONS ;  PEROXIDE OXIDATION ;  AIR OXIDATION ;  IRON ;  FE ;  MECHANISM ;  SURFACES ;  ZNFE2O4
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000249136200056
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99103
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, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Xu, Aihua,Yang, Min,Qiao, Ruiping,et al. Activity and leaching features of zinc-aluminum ferrites in catalytic wet oxidation of phenol[J]. JOURNAL OF HAZARDOUS MATERIALS,2007,147(1-2):449-456.
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