Complete Catalytic Oxidation of Ethanol over MnO2 with Different Crystal Phase Structures
文献类型：期刊论文
| 作者 | Zhang Jie; Zhang Jiang-Hao; Zhang Chang-Bin; He Hong |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2015-02-15 |
| 卷号 | 31期号:2页码:353-359 |
| 关键词 | MnO2 catalyst Low temperature catalytic oxidation Ethanol complete oxidation Volatile organic compound Lattice oxygen |
| 英文摘要 | alpha-MnO2, beta-MnO2, gamma-MnO2, and delta-MnO2 catalysts were synthesized by hydrothermal methods, and their catalytic performances towards the oxidation of ethanol were evaluated in detail. The as-synthesized MnO2 catalysts were characterized by N-2 adsorption-desorption measurements, X- ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and H-2 temperature-programmed reduction (H-2-TPR). The alpha-MnO2 catalyst showed the best activity of the catalysts tested for the combustion of ethanol and the trend in the activity of different MnO2 catalysts towards the oxidation of ethanol was of the order alpha-MnO2>delta-MnO2>gamma-MnO2>beta-MnO2. The effect of the crystal phase structure on the activity of the MnO2 catalysts was investigated. The XRD results showed that there were differences in the crystallinities of the alpha-, beta-, gamma-, delta-MnO2 catalysts, but these differences did not have a significant effect on their catalytic performances towards the oxidation of ethanol. The BET surface areas of the alpha-, beta-, gamma-, delta-MnO2 catalysts exhibited similar tendencies to their ethanol oxidation activities, although the results of standardization calculations showed that the surface area was not the main factor affecting their catalytical activities. The XPS results showed that the lattice oxygen concentration played an important role in defining the catalytic performance of the MnO2. The alpha-MnO2 catalyst showed the best reducibility of all of the MnO2 catalysts tested, as determined by H-2-TPR. The excellent performance of alpha-MnO2 was attributed to its higher lattice oxygen concentration and reducibility, which were identified as the main factors affecting the activity of the MnO2 towards the complete oxidation of ethanol. |
| 研究领域[WOS] | Chemistry, Physical |
| WOS记录号 | WOS:000350786500021 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32465]  |
| 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 | Zhang Jie,Zhang Jiang-Hao,Zhang Chang-Bin,et al. Complete Catalytic Oxidation of Ethanol over MnO2 with Different Crystal Phase Structures[J]. ACTA PHYSICO-CHIMICA SINICA,2015,31(2):353-359. |
| APA | Zhang Jie,Zhang Jiang-Hao,Zhang Chang-Bin,&He Hong.(2015).Complete Catalytic Oxidation of Ethanol over MnO2 with Different Crystal Phase Structures.ACTA PHYSICO-CHIMICA SINICA,31(2),353-359. |
| MLA | Zhang Jie,et al."Complete Catalytic Oxidation of Ethanol over MnO2 with Different Crystal Phase Structures".ACTA PHYSICO-CHIMICA SINICA 31.2(2015):353-359. |
入库方式： OAI收割
来源：生态环境研究中心
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