NO oxidation catalysis on copper doped hexagonal phase LaCoO3: a combined experimental and theoretical study
文献类型：期刊论文
| 作者 | Zhou, Chen ; Liu, Xiao ; Wu, Chunzheng ; Wen, Yanwei ; Xue, Yejian ; Chen, Rong ; Zhang, Zhaoliang ; Shan, Bin ; Yin, Hongfeng ; Wang, Wei Guo |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 16期号:11页码:5106 |
| 中文摘要 | Cobalt-based perovskite catalysts showed excellent performance towards NO-NO2 oxidation. We systematically investigated the influence of different levels of Cu-doping on the catalytic performance of hexagonal phase LaCoO3 (LaCo1-xCuxO3 (x = 0.1, 0.2, 0.3)) for NO oxidation. The catalytic activities of the oxide catalysts followed the sequence: LaCo0.9Cu0.1O3 > LaCoO3 > LaCo0.8Cu0.2O3 > LaCo0.8Cu(0.2)O(3) where the highest NO conversion for LaCo0.9Cu0.1O3 was 82% at 310 degrees C. The relevant structural characterizations were conducted by XRD, BET, FTIR and TEM. The interaction between Co and Cu promoted the conversion of NO to NO2. Upon increasing the Cu doping content, a decrease of the performance resulted from the generation of isolated CuO on the surface of the oxides, confirmed using H-2-TPR and XPS. Combined with first-principle calculations, we explored the reaction mechanism of NO oxidation on the surface and found that Cu doping would facilitate the reaction by decreasing the energy of oxygen vacancy formation and the NO2 desorption barrier from Co- or Cu-nitrite. |
| 公开日期 | 2015-09-20 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/12039]  |
| 专题 | 宁波材料技术与工程研究所_2014专题 |
| 推荐引用方式 GB/T 7714 | Zhou, Chen,Liu, Xiao,Wu, Chunzheng,et al. NO oxidation catalysis on copper doped hexagonal phase LaCoO3: a combined experimental and theoretical study[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(11):5106. |
| APA | Zhou, Chen.,Liu, Xiao.,Wu, Chunzheng.,Wen, Yanwei.,Xue, Yejian.,...&Wang, Wei Guo.(2014).NO oxidation catalysis on copper doped hexagonal phase LaCoO3: a combined experimental and theoretical study.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(11),5106. |
| MLA | Zhou, Chen,et al."NO oxidation catalysis on copper doped hexagonal phase LaCoO3: a combined experimental and theoretical study".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.11(2014):5106. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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