Effect of NiFe2O4 on PCDF byproducts formation during thermal degradation of decachlorobiphenyl
文献类型：期刊论文
| 作者 | Huang, Linyan ; Su, Guijin ; Liu, Yexuan ; Li, Liewu ; Liu, Sha ; Lu, Huijie ; Zheng, Minghui |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2014 |
| 卷号 | 4期号:48页码:25453-25460 |
| ISSN号 | 2046-2069 |
| 中文摘要 | Formation of 2,3,7,8-PCDD/Fs during the catalytic decomposition of decachlorobiphenyl over spinel NiFe2O4 was evaluated at 300 degrees C and compared with that over Fe2O3 and in a catalyst-free system. The total concentration of 2,3,7,8-PCDFs, dominated by OCDF and then 2,3,7,8-HpCDF, were significantly formed, being 6-53 times higher than the total concentration of 2,3,7,8-PCDD in all three reaction systems studied. Time-dependent distribution profile of 2,3,7,8-PCDF indicated that the degradation and formation of PCDF occurred concurrently. The initial hydrodechlorination of OCDF preferentially occurred at the 1- and 9-position than at the 4- and 6-position (thus, higher amounts of 1,2,3,4,6,7,8-HpCDF were generated relative to 1,2,3,4,7,8,9-HpCDF), followed by further major hydrodechlorination pathway of 1,2,3,4,6,7,8-HpCDF/1,2,3,6,7,8-HxCDF/1,2,3,7,8-PeCDF/2,3,7,8-TCDF. Relative to the catalyst-free reaction system, the concentration and total toxic equivalent values of 2,3,7,8-PCDFs decreased by 24.1-99.7% and 86-98.4%, respectively, in the NiFe2O4 catalyst system, while initial increases by 744.5% and 426.3%, respectively, followed by reduction up to 81.6% and 90.7%, respectively, were observed in the Fe2O3 catalyst system. Current findings indicate that NiFe2O4 hindered PCDF formation, which was attributed to its chemical structural stability and high activity towards degradation of biphenyl-like constituents in PCBs. |
| WOS记录号 | WOS:000338044500069 |
| 公开日期 | 2015-03-24 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9351]  |
| 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 | Huang, Linyan,Su, Guijin,Liu, Yexuan,et al. Effect of NiFe2O4 on PCDF byproducts formation during thermal degradation of decachlorobiphenyl[J]. RSC ADVANCES,2014,4(48):25453-25460. |
| APA | Huang, Linyan.,Su, Guijin.,Liu, Yexuan.,Li, Liewu.,Liu, Sha.,...&Zheng, Minghui.(2014).Effect of NiFe2O4 on PCDF byproducts formation during thermal degradation of decachlorobiphenyl.RSC ADVANCES,4(48),25453-25460. |
| MLA | Huang, Linyan,et al."Effect of NiFe2O4 on PCDF byproducts formation during thermal degradation of decachlorobiphenyl".RSC ADVANCES 4.48(2014):25453-25460. |
入库方式： OAI收割
来源：生态环境研究中心
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