Transition metal doped cryptomelane-type manganese oxide catalysts for ozone decomposition
文献类型：期刊论文
| 作者 | He, Hong; Ma, Jinzhu; Wang, Caixia |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 201期号:0页码:503-510 |
| 关键词 | Octahedral Molecular Sieve (Oms) Manganese Dioxide Cryptomelane Transition Metal-doped Mno2 Ozone Decomposition |
| 英文摘要 | Transition metal (Cerium, Cobalt, and Iron) doped cryptomelane-type manganese oxide (M-OMS-2) catalysts have been successfully synthesized and characterized. The different metal-ion-doped K-OMS-2 catalysts showed distinct differences in their ozone decomposition activity. Cerium-doped OMS-2 materials showed ozone conversion of 90% under RH = 90% and space velocity of 600,000 h(-1). X-ray diffraction (XRD), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) data suggested that the as-synthesized M-OMS-2 materials were all crystalline with no segregated metal oxide impurities. ICP-OES and XAFS results confirmed that CO3+ and Fe3+ replace Mn3+ in the cryptomelane structure and Ce4+ mainly replaces the K+ in the tunnel and partially replaces the Mn4+ in the framework of the cryptomelane structure. Because of the differences in the substitution sites and the ionic radius of dopants, the morphologies of the catalysts were different. The Mn3+ content and number of surface defects play a key role during the decomposition of ozone. Ce-OMS-2 is a promising catalyst for purifying waste gases containing ozone under high-humidity conditions. (C) 2016 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39215]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 推荐引用方式 GB/T 7714 | He, Hong,Ma, Jinzhu,Wang, Caixia. Transition metal doped cryptomelane-type manganese oxide catalysts for ozone decomposition[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,201(0):503-510. |
| APA | He, Hong,Ma, Jinzhu,&Wang, Caixia.(2017).Transition metal doped cryptomelane-type manganese oxide catalysts for ozone decomposition.APPLIED CATALYSIS B-ENVIRONMENTAL,201(0),503-510. |
| MLA | He, Hong,et al."Transition metal doped cryptomelane-type manganese oxide catalysts for ozone decomposition".APPLIED CATALYSIS B-ENVIRONMENTAL 201.0(2017):503-510. |
入库方式： OAI收割
来源：生态环境研究中心
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