Ultrasmall Platinum Stabilized on Triphenylphosphine-Modified Silica for Chemoselective Hydrogenation
文献类型：期刊论文
| 作者 | Jayakumar, Sanjeevi1,4; Modak, Arindam4; Guo, Miao3,4; Li, He4; Hu, Xiangping2; Yang, Qihua4 |
| 刊名 | CHEMISTRY-A EUROPEAN JOURNAL
 |
| 出版日期 | 2017-06-07 |
| 卷号 | 23页码:7791-7797 |
| 关键词 | Nanoparticles p Ligands Platinum Polymers Supported Catalysts |
| DOI | 10.1002/chem.201700980 |
| 英文摘要 | Chemoselective hydrogenation of substrates with more than one functional group that could be hydrogenated is quite challenging and is of fundamental importance. Here, the enhanced chemoselectivity of ultrasmall (< 1 nm) platinum nanoparticles (NPs) stabilized on silica modified with triphenylphosphine (PSiO2) in hydrogenation reactions is reported. Platinum NPs on PSiO2 exhibit much higher selectivity than those on SiO2 in the hydrogenation of acetophenone to 1-phenylethanol (99.9 versus 36%) and hydrogenation of phenylacetylene to styrene (85 versus 52%). The results of NMR spectroscopy, X-ray photoelectron spectroscopy, and in situ CO adsorption FTIR spectroscopy indicate the existence of strong interactions between triphenylphosphine and Pt NPs. Consequently, Pt NPs on PSiO2 have smaller particle sizes and more positive Pt 4 f binding energy than those of Pt/SiO2; these are the main contributors to the superior chemoselectivity of Pt NPs. The organically modified silica could act as an efficient solid ligand for tuning the catalytic performance of metal NPs. |
| 语种 | 英语 |
| WOS记录号 | WOS:000402799200024 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/152194]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Univ Chinese Acad Sci, Int Coll, Beijing 100049, Peoples R China 2.Dalian Inst Chem Phys, Lab Fine Chem, Dalian, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jayakumar, Sanjeevi,Modak, Arindam,Guo, Miao,et al. Ultrasmall Platinum Stabilized on Triphenylphosphine-Modified Silica for Chemoselective Hydrogenation[J]. CHEMISTRY-A EUROPEAN JOURNAL,2017,23:7791-7797. |
| APA | Jayakumar, Sanjeevi,Modak, Arindam,Guo, Miao,Li, He,Hu, Xiangping,&Yang, Qihua.(2017).Ultrasmall Platinum Stabilized on Triphenylphosphine-Modified Silica for Chemoselective Hydrogenation.CHEMISTRY-A EUROPEAN JOURNAL,23,7791-7797. |
| MLA | Jayakumar, Sanjeevi,et al."Ultrasmall Platinum Stabilized on Triphenylphosphine-Modified Silica for Chemoselective Hydrogenation".CHEMISTRY-A EUROPEAN JOURNAL 23(2017):7791-7797. |
入库方式： OAI收割
来源：大连化学物理研究所
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