Composition-tuned oxidation levels of Pt-Re bimetallic nanoparticles for the etherification of allylic alcohols
文献类型：期刊论文
| 作者 | Wang, YH; Li, LD; Wu, K; Si, R; Sun, LD; Yan, CH |
| 刊名 | NANO RESEARCH
 |
| 出版日期 | 2018 |
| 卷号 | 11期号:11页码:5902-5912 |
| 关键词 | GAS SHIFT REACTION RHENIUM NANOPARTICLES SELECTIVE REDUCTION AMBIENT CONDITIONS COUPLING REACTIONS CYCLIC ETHERS CATALYSTS HYDROGENOLYSIS GLYCEROL SURFACE |
| ISSN号 | 1998-0124 |
| DOI | 10.1007/s12274-018-2102-0 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The catalytic performance of metal nanoparticles is often affected by surface oxidation levels. Instead of post-synthesis oxidation/reduction, we propose an efficient method to modulate the oxidation levels by tuning the composition of bimetallic nanoparticles. Here we report a series of Pt-Re bimetallic nanoparticles synthesized via a facile thermal co-reduction process, with a uniform size of approximately 3 nm. The investigation of the growth of the Pt-Re nanoparticles suggests that the Re atoms were enriched on the surface, as confirmed by X-ray photoelectron spectroscopy. Furthermore, X-ray absorption spectroscopy showed that metallic Re was decreased and high-valency ReOx species were increased in particles with higher Re/Pt ratios. In the etherification of allylic alcohols catalyzed by Pt-Re nanoparticles of different compositions under ambient conditions, particles with higher Re/Pt ratios exhibited significantly better performances. The highest mass activity of Pt-Re bimetallic nanoparticles (127 molg(-1)s(-1)) was more than forty times that of the industrial catalyst CH3ReO3 (3 molg(-1)s(-1)). The catalytically active sites were associated with ReOx and could be tuned by adjusting the Pt ratio. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30881]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 2.Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, Coll Chem & Mol Engn,Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, YH,Li, LD,Wu, K,et al. Composition-tuned oxidation levels of Pt-Re bimetallic nanoparticles for the etherification of allylic alcohols[J]. NANO RESEARCH,2018,11(11):5902-5912. |
| APA | Wang, YH,Li, LD,Wu, K,Si, R,Sun, LD,&Yan, CH.(2018).Composition-tuned oxidation levels of Pt-Re bimetallic nanoparticles for the etherification of allylic alcohols.NANO RESEARCH,11(11),5902-5912. |
| MLA | Wang, YH,et al."Composition-tuned oxidation levels of Pt-Re bimetallic nanoparticles for the etherification of allylic alcohols".NANO RESEARCH 11.11(2018):5902-5912. |
入库方式： OAI收割
来源：上海应用物理研究所
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