A comparative study of N2O conversion to N-2 over Co/AC and Cu/AC catalysts
文献类型：期刊论文
| 作者 | Zhu, ZH; Lu, GQM; Zhuang, YH; Shen, DX |
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 1999 |
| 卷号 | 13期号:4页码:763-772 |
| 英文摘要 | Catalytic conversion of N2O to N-2 over Cu- and Co-impregnated activated carbon catalysts (Cu/AC and Co/AC) was investigated. Catalytic activity measurements were carried out in a fixed-bed flow reactor at atmospheric pressure. The catalysts were characterized by N-2 adsorption, X-ray diffraction (XRD) and thermogravimetric analysis (TGA). This study aimed to provide insights into the following aspects: the metal dispersion, changes in pore structure, influence of catalyst loading on reaction, and reaction mechanism. Increasing loading of Co or Cu led to decreasing dispersion, but 20 wt % loading was an upper limit for optimal activities in both cases, with too high loading causing sintering of metal. Co exhibited a relatively better dispersion than Cu. Impregnation of metal led to a large decrease in surface area and pore volume, especially for 30 wt % of loading. 20 wt % of loading has proved to be the optimum for both Cu and Co, which shows the highest activity. Both N2O-Co/AC and -Cu/AC reactions are based upon a redox mechanism, but the former is limited by the oxygen transfer from catalysts to carbon, while N2O chemisorption on the surface of Cu catalyst controls the latter. The removal of oxygen from cobalt promotes the activity of Co/AC, but it is beneficial for Cu/AC to keep plenty of oxygen to maintain the intermediate oxidation of copper-Cu1+. The different nature of the two catalysts and their catalytic reaction mechanisms are closely related to their different electronegativities. |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| WOS记录号 | WOS:000081614400001 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24219]  |
| 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 | Zhu, ZH,Lu, GQM,Zhuang, YH,et al. A comparative study of N2O conversion to N-2 over Co/AC and Cu/AC catalysts[J]. ENERGY & FUELS,1999,13(4):763-772. |
| APA | Zhu, ZH,Lu, GQM,Zhuang, YH,&Shen, DX.(1999).A comparative study of N2O conversion to N-2 over Co/AC and Cu/AC catalysts.ENERGY & FUELS,13(4),763-772. |
| MLA | Zhu, ZH,et al."A comparative study of N2O conversion to N-2 over Co/AC and Cu/AC catalysts".ENERGY & FUELS 13.4(1999):763-772. |
入库方式： OAI收割
来源：生态环境研究中心
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