Catalyzing the oxidation of sulfamethoxazole by permanganate using molecular sieves supported ruthenium nanoparticles
文献类型：期刊论文
| 作者 | Zhang, J; Sun, B; Huang, YY; Guan, XH |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2015 |
| 卷号 | 141页码:154—161 |
| 关键词 | POTASSIUM-PERMANGANATE CHLORINE DIOXIDE BISPHENOL-A CATALYSTS KINETICS REDUCTION SPECTROSCOPY CHEMICALS REMOVAL PHENOL |
| ISSN号 | 0045-6535 |
| 通讯作者 | Guan, XH (reprint author), Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China. |
| 英文摘要 | This study developed a heterogeneous catalytic permanganate oxidation system with three molecular sieves, i.e., nanosized ZSM-5 (ZSM-5A), microsized ZSM-5 (ZSM-5B) and MCM-41, supported ruthenium nanoparticles as catalyst, denoted as Ru/ZSM-5A, Ru/ZSM-5B and Ru/MCM-41, respectively. The presence of 0.5 g L-1 Ru/ZSM-5A, Ru/ZSM-5B and Ru/MCM-41 increased the oxidation rate of sulfamethoxazole (SMX) by permanganate at pH 7.0 by 27-1144 times. The catalytic performance of Ru catalysts toward SMX oxidation by permanganate was strongly dependent on Ru loading on the catalysts. The X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) analyses confirmed that Ru catalyst acted as an electron shuttle in catalytic permanganate oxidation process. Ru-VII deposited on the surface of catalysts was oxidized by permanganate to its higher oxidation state Ru-VII, which could work as a co-oxidant with permanganate to decompose SMX and was then reduced to its initial tri-valence. During the successive runs, Ru/ZSM-5A could not maintain its catalytic activity due to the deposition of MnO2, which was the reductive product of permanganate, onto the surface of Ru/ZSM-5A. Thus, the regeneration of partially deactivated Ru catalysts by reductant NH2OH.HCl or ascorbic acid was proposed. Ru/ZSM-5A regenerated by NH2OH.HCl displayed comparable catalytic ability to its virgin counterpart, while ascorbic acid could not completely remove the deposited MnO2. A trace amount of leaching of Ru into the reaction solution was also observed, which would be ameliorated by improving the preparation conditions in the future study. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000363824400022 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24880]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Zhang, J,Sun, B,Huang, YY,et al. Catalyzing the oxidation of sulfamethoxazole by permanganate using molecular sieves supported ruthenium nanoparticles[J]. CHEMOSPHERE,2015,141:154—161. |
| APA | Zhang, J,Sun, B,Huang, YY,&Guan, XH.(2015).Catalyzing the oxidation of sulfamethoxazole by permanganate using molecular sieves supported ruthenium nanoparticles.CHEMOSPHERE,141,154—161. |
| MLA | Zhang, J,et al."Catalyzing the oxidation of sulfamethoxazole by permanganate using molecular sieves supported ruthenium nanoparticles".CHEMOSPHERE 141(2015):154—161. |
入库方式： OAI收割
来源：上海应用物理研究所
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