Degradation kinetics of anthracene by ozone on mineral oxides
文献类型：期刊论文
| 作者 | Ma, Jinzhu; Liu, Yongchun; He, Hong |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2010-11 |
| 卷号 | 44期号:35页码:4446-4453 |
| 关键词 | Anthracene Mineral oxides Ozone Heterogeneous reactions Kinetics |
| 中文摘要 | To further understand the role of substrates on the heterogeneous reactions of polycyclic aromatic hydrocarbons, the reactions of ozone with anthracene adsorbed on different mineral oxides (SiO(2), alpha-Al(2)O(3) and alpha-Fe(2)O(3)) and on Teflon disc were investigated in dark at 20 degrees C. No reaction between ozone and anthracene on Teflon disc was observed when the ozone concentration was similar to 1.18 x 10(14) molecules cm(-3). The reactions on mineral oxides exhibited pseudo-first-order kinetics for anthracene loss, and the pseudo-first-order rate constant (k(1.obs)) displayed a Langmuir-Hinshelwood dependence on the gas-phase ozone concentration. The adsorption equilibrium constants for ozone (K(O3)) on SiO(2)-1, SiO(2)-2, alpha-Al(2)O(3) and alpha-Fe(2)O(3) were (0.81 +/- 0.26) x 10(-15) cm(3), (2.83 +/- 1.17) x 10(-15) cm(3), (2.48 +/- 0.77) x 10(-15) cm(3) and (1.66 +/- 0.45) x 10(-15) cm(3), respectively; and the maximum pseudo-first-order rate constant (k(1.max)) on these oxides were (0.385 +/- 0.058) s(-1), (0.101 +/- 0.0138) s(-1), (0.0676 +/- 0.0086) s(-1) and (0.0457 +/- 0.004) s(-1), respectively. Anthraquinone was identified as the main surface product of anthracene reacted with ozone. Comparison with previous research and the results obtained in this study suggest that the reactivity of anthracene with ozone and the lifetimes of anthracene adsorbed on mineral dust in the atmosphere are determined by the nature of the substrate. (C) 2010 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000283568300015 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21061]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Ma, Jinzhu,Liu, Yongchun,He, Hong. Degradation kinetics of anthracene by ozone on mineral oxides[J]. ATMOSPHERIC ENVIRONMENT,2010,44(35):4446-4453. |
| APA | Ma, Jinzhu,Liu, Yongchun,&He, Hong.(2010).Degradation kinetics of anthracene by ozone on mineral oxides.ATMOSPHERIC ENVIRONMENT,44(35),4446-4453. |
| MLA | Ma, Jinzhu,et al."Degradation kinetics of anthracene by ozone on mineral oxides".ATMOSPHERIC ENVIRONMENT 44.35(2010):4446-4453. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。