The origin of palladium particle size effects in the direct synthesis of H2O2: Is smaller better?
文献类型：期刊论文
| 作者 | Tian, PF; Ouyang, L; Xu, XY; Ao, C; Xu, XC; Si, R; Shen, XJ; Lin, M; Xu, J; Han, YF |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2017 |
| 卷号 | 349页码:30-40 |
| 关键词 | Size Effects Subnano Clusters Pd/hap Catalysts H2o2 Synthesis Structure-performance Relationship |
| ISSN号 | 0021-9517 |
| DOI | 10.1016/j.jcat.2016.12.004 |
| 文献子类 | 期刊论文 |
| 英文摘要 | A series of size-controlled Pd/hydroxyapatite (HAp) catalysts ranging from single sites (Pd clusters) to nanoparticles (dpd: similar to 30 nm) was prepared and examined for the H2O2 synthesis directly from H-2 and O-2. A Pd/HAp (dpd: similar to 1.4 nm) showed a high selectivity of 94% toward H2O2 under mild conditions (283 K and atmospheric pressure). The crystal phase, morphology, surface electronic states and coordination number of Pd particles from atomic level to nano scale were characterized in detail using multiple techniques such as X-ray diffraction, scanning transmission electron microscopy, and extended X-ray absorption fine structure. Density functional theory calculations indicated that Pd clusters of subnano size have the most effective active sites for the selective activation of oxygen hydrogenation, thus resulting in high catalytic efficiency for H2O2 synthesis. This work elucidates why those smaller Pd particles in a proper size range show the best catalytic performance for H2O2 synthesis. (C) 2016 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000401217600004 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/27479]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Tian, PF,Ouyang, L,Xu, XY,et al. The origin of palladium particle size effects in the direct synthesis of H2O2: Is smaller better?[J]. JOURNAL OF CATALYSIS,2017,349:30-40. |
| APA | Tian, PF.,Ouyang, L.,Xu, XY.,Ao, C.,Xu, XC.,...&Han, YF.(2017).The origin of palladium particle size effects in the direct synthesis of H2O2: Is smaller better?.JOURNAL OF CATALYSIS,349,30-40. |
| MLA | Tian, PF,et al."The origin of palladium particle size effects in the direct synthesis of H2O2: Is smaller better?".JOURNAL OF CATALYSIS 349(2017):30-40. |
入库方式： OAI收割
来源：上海应用物理研究所
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