Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| The origin of palladium particle size effects in the direct synthesis of H2O2: Is smaller better? | |
| Tian, PF; Ouyang, L; Xu, XY; Ao, C; Xu, XC; Si, R; Shen, XJ; Lin, M; Xu, J; Han, YF | |
| 2017 | |
| Source Publication | JOURNAL OF CATALYSIS
 |
| ISSN | 0021-9517 |
| Volume | 349Pages:30-40 |
| Subtype | 期刊论文 |
| Abstract | 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. |
| Keyword | Size Effects Subnano Clusters Pd/hap Catalysts H2o2 Synthesis Structure-performance Relationship |
| DOI | 10.1016/j.jcat.2016.12.004 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000401217600004 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/27479 |
| Collection | 中科院上海应用物理研究所2011-2019年 |
| Recommended Citation 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. |
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| The origin of pallad（3023KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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