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题名: Dibenzodioxin adsorption on inorganic materials
作者: Guan, YJ;  Liu, Y;  Wu, WC;  Sun, KQ;  Li, Y;  Ying, PL;  Feng, ZC;  Li, C
通讯作者: 李灿
刊名: LANGMUIR
发表日期: 2005-04-26
DOI: 10.1021/la0468545
卷: 21, 期:9, 页:3877-3880
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 503
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: Dibenzodioxin adsorption/desorption on solid surfaces is an important issue associated with the formation, adsorption, and emission of dioxins. Dibenzodioxin adsorption/desorption behaviors on inorganic materials (amorphous/mesoporous silica, metal oxides, and zeolites) were investigated using in situ FT-IR spectroscopy and thermogravimetric (TG) analysis. Desorption temperatures of adsorbed dibenzodioxin are very different for different kinds of inorganic materials: similar to 200 degrees C for amorphous/mesoporous silica, similar to 230 degrees C for metal oxides, and similar to 450 degrees C for NaY and mordenite zeolites. The adsorption of dibenzodioxin can be grouped into three categories according to the red shifts of the IR band at 1496 cm(-1) of the aromatic ring for the adsorbed dibenzodioxin: a shift of 6 cm-1 for amorphous/mesoporous silica, a shift of 10 cm(-1) for metal oxides, and a shift of 14 cm(-1) for NaY and mordenite, suggesting that the IR shifts are proposed to associated with the strength of the interaction between adsorbed dibenzodioxin and the inorganic materials. It is proposed that the dibenzodioxin adsorption is mainly via the following three interactions: hydrogen bonding with the surface hydroxyl groups on amorphous/mesoporous silica, complexation with Lewis acid sites on metal oxides, and confinement effect of pores of mordenite and NaY with pore size close to the molecular size of dibenzodioxin.
关键词[WOS]: WASTE MSW INCINERATION ;  P-DIOXINS ;  CATALYTIC-OXIDATION ;  FLY-ASH ;  DIBENZOFURANS ;  ZEOLITES ;  1,2-DICHLOROBENZENE ;  BEHAVIOR ;  SORBENT ;  BENZENE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000228590800023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93029
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

Recommended Citation:
Guan, YJ,Liu, Y,Wu, WC,et al. Dibenzodioxin adsorption on inorganic materials[J]. LANGMUIR,2005,21(9):3877-3880.
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