Thermal Degradation of Octachloronaphthalene over As-Prepared Fe3O4 Micro/Nanomaterial and Its Hypothesized Mechanism
文献类型：期刊论文
| 作者 | Su, Guijin ; Lu, Huijie ; Zhang, Lixia ; Zhang, Aiqian ; Huang, Linyan ; Liu, Sha ; Li, Liewu ; Zheng, Minghui |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 48期号:12页码:6899-6908 |
| ISSN号 | 0013-936X |
| 中文摘要 | Decomposition of octachloronaphthalene (CN-75) featuring fully substituted chlorines was investigated over as-prepared Fe3O4 micro/nanorriaterial at 300 degrees C. It conforms to pseudo-first-order kinetics with k(obs) = 0.10 min(-1) as comparable to that of hexachlorobenzene and decachlorobiphenyl. Analysis of the products indicates that the degradation of CN-75 proceeds via two competitive hydrodechlorination and oxidation pathways. The onset of hydrodechlorination producing lower chlorinated naphthalenes (CNs) is more favored on alpha-position than beta-position. Higher amounts of CN-73, CN-66/67, CN-52/60, and CN-8/11 isomers were found, while small content difference was detected within the tetrachloronaphthalene and trichloronaphthalene homologues, which might be attributed to lower energy principle and steric effects. The important hydrodechlorination steps, leading to CN-73 >> CN-74 in two heptachloronaphthalene isomers contrary to that in technical PCN-mixtures, were specified by calculating the charge of natural bond orbitals in CN-75 and the energy of two heptachloronaphthalene radicals. On the basis of the molecular electrostatic potential of CN-75, the nucleophilic O2-, and eletrophilic O-2(-) and O-, present on the Fe3O4 surface, might attack the carbon atom and pi electron cloud of naphthalene ring, producing naphthol species with Mars-van Krevelen mechanism, and formic and acetic acids. |
| WOS记录号 | WOS:000337646000046 |
| 公开日期 | 2015-03-24 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9479]  |
| 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 | Su, Guijin,Lu, Huijie,Zhang, Lixia,et al. Thermal Degradation of Octachloronaphthalene over As-Prepared Fe3O4 Micro/Nanomaterial and Its Hypothesized Mechanism[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(12):6899-6908. |
| APA | Su, Guijin.,Lu, Huijie.,Zhang, Lixia.,Zhang, Aiqian.,Huang, Linyan.,...&Zheng, Minghui.(2014).Thermal Degradation of Octachloronaphthalene over As-Prepared Fe3O4 Micro/Nanomaterial and Its Hypothesized Mechanism.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(12),6899-6908. |
| MLA | Su, Guijin,et al."Thermal Degradation of Octachloronaphthalene over As-Prepared Fe3O4 Micro/Nanomaterial and Its Hypothesized Mechanism".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.12(2014):6899-6908. |
入库方式： OAI收割
来源：生态环境研究中心
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