Promotion effect of residual K on the decomposition of N2O over cobalt-cerium mixed oxide catalyst
文献类型：会议论文
| 作者 | Xue, Li; Zhang, Changbin; He, Hong; Teraoka, Yasutake |
| 出版日期 | 2007 |
| 会议名称 | 2nd Japan-China Workshop on Environmental Catalysis and Eco- Materials |
| 会议日期 | OCT 23-25, 2005 |
| 会议地点 | Fukuoka, JAPAN |
| 关键词 | NO decomposition Co3O4 CeO mixed oxide co-precipitation O-2-TPD H-2-TPR redox ability K2CO3 residual K |
| 英文摘要 | A series of cobalt-cerium mixed oxide catalysts (CO3O4-CeO2) with a Ce/Co molar ratio of 0.05 were prepared by co-precipitation (with K2CO3 and KOH as the respective precipitant), impregnation, citrate, and direct evaporation methods and then tested for the catalytic decomposition of N2O. XRD. BET, XPS, O-2-TPD and H-2-TPR methods were used to characterize the catalysts. Catalysts with a trace amount of residual K exhibited higher catalytic activities than those without. The presence of appropriate amount of K in Co3O4-CeO2 may improve the redox property of CO3O4, which is important for the decomposition of NO. When the amount of K was constant, the surface area became the most important factor for the reaction. The co-precipitation-prepared catalyst with KCO3 as precipitant exhibited the best catalytic performance because of the presence of ca. 2 mol% residual K and the high surface area. We also discussed the rate-determining step of the N,O decomposition reaction over these CO3O4-CeO2 catalysts. (c) 2007 Elsevier B.V. All rights reserved. |
| ISSN号 | 0920-5861 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24726]  |
| 专题 | 生态环境研究中心_大气环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Xue, Li,Zhang, Changbin,He, Hong,et al. Promotion effect of residual K on the decomposition of N2O over cobalt-cerium mixed oxide catalyst[C]. 见:2nd Japan-China Workshop on Environmental Catalysis and Eco- Materials. Fukuoka, JAPAN. OCT 23-25, 2005. |
入库方式： OAI收割
来源：生态环境研究中心
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