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题名: Catalytic wet air oxidation of coke-plant wastewater on ruthenium-based eggshell catalysts in a bubbling bed reactor
作者: Yang, M.;  Sun, Y.;  Xu, A. H.;  Lu, X. Y.;  Du, H. Z.;  Sun, C. L.;  Li, C.
通讯作者: 孙承林
关键词: catalytic wet air oxidation ;  Ru catalysts ;  bubbling bed reactor ;  eggshell catalyst ;  coke-plant wastewater
刊名: BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
发表日期: 2007-07-01
DOI: 10.1007/s00128-007-9150-6
卷: 79, 期:1, 页:66-70
收录类别: SCI
文章类型: Article
部门归属: 9,5
项目归属: 902,503
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences ;  Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ;  Toxicology
英文摘要: Catalytic wet air of coke-plant wastewater was studied in a bubbling bed reactor. Two types of supported Ru-based catalysts, eggshell and uniform catalysts, were employed. Compared with the results in the wet air oxidation of coke-plant wastewater, supported Ru uniform catalysts showed high activity for chemical oxygen demand (COD) and ammonia/ammonium compounds (NH3-N) removal at temperature of 250 degrees C and pressure of 4.8 MPa, and it has been demonstrated that the catalytic activity of uniform catalyst depended strongly on the distribution of active sites of Ru on catalyst. Compared to the corresponding uniform catalysts with the same Ru loading (0.25wt.% and 0.1wt.%, respectively), the eggshell catalysts showed higher activities for CODcr removal and much higher activities for NH3-N degradation. The high activity of eggshell catalyst for treatment of coke-plant wastewater can be attributed to the higher density of active Ru sites in the shell layer than that of the corresponding uniform catalyst with the same Ru loading. It has been also evidenced that the active Ru sites in the internal core of uniform catalyst have very little or no contribution to CODcr and NH3-N removal in the total oxidation of coke-plant wastewater.
关键词[WOS]: ORGANIC-COMPOUNDS ;  REMOVAL ;  PHENOL
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000248910900015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99149
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, Dalian Inst Chem Phys, Grp 902, Dalian 116023, Peoples R China

Recommended Citation:
Yang, M.,Sun, Y.,Xu, A. H.,et al. Catalytic wet air oxidation of coke-plant wastewater on ruthenium-based eggshell catalysts in a bubbling bed reactor[J]. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY,2007,79(1):66-70.
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