Shape dependence of nanoceria on complete catalytic oxidation of o-xylene
文献类型：期刊论文
| 作者 | Wang, Lian; Wang, Yafei; Zhang, Yan; Yu, Yunbo; He, Hong; Qin, Xiubo; Wang, Baoyi |
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:13页码:4840-4848 |
| 英文摘要 | BTX (benzene, toluene, and xylene) in atmosphere, mainly emitted from various industrial processes and transportation activities, are of particular concern due to their potentially highly toxic effects on human health. Catalytic oxidation of o-xylene was investigated on nanosized CeO2 particles, cubes, and rods, among which rods show the highest activity, which is comparable with those of traditional noble-metal catalysts. CeO2 nanorods also exhibit long durability for o-xylene oxidation, without deactivation during a 50 h time-on stream test. Over the CeO2 rods and particles, the presence of water vapor slightly decreased o-xylene conversion, while water vapor enhanced o-xylene oxidation on the CeO2 cubes. High-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, positron annihilation spectroscopy, and O-2 temperature-programmed desorption measurements revealed that ceria rods enclosed by (111) and (100) facets exhibit the highest concentration of oxygen vacancy clusters (VCs), the presence of which promoted the adsorption of molecular oxygen. The lower the temperature for desorption of chemisorbed O-2 species is, the higher is the activity for o-xylene oxidation, identifying the key role of VCs in t(h)is reaction via the activation of molecular oxygen over nanoceria. The finding may also be fundamental for designing ceria-based catalysts with better performance for catalytic oxidation of volatile organic compounds. |
| 收录类别 | SCI |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35766]  |
| 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 | Wang, Lian,Wang, Yafei,Zhang, Yan,et al. Shape dependence of nanoceria on complete catalytic oxidation of o-xylene[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(13):4840-4848. |
| APA | Wang, Lian.,Wang, Yafei.,Zhang, Yan.,Yu, Yunbo.,He, Hong.,...&Wang, Baoyi.(2016).Shape dependence of nanoceria on complete catalytic oxidation of o-xylene.CATALYSIS SCIENCE & TECHNOLOGY,6(13),4840-4848. |
| MLA | Wang, Lian,et al."Shape dependence of nanoceria on complete catalytic oxidation of o-xylene".CATALYSIS SCIENCE & TECHNOLOGY 6.13(2016):4840-4848. |
入库方式： OAI收割
来源：生态环境研究中心
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