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Ultrasmall Platinum Stabilized on Triphenylphosphine-Modified Silica for Chemoselective Hydrogenation
Jayakumar, Sanjeevi1,2; Modak, Arindam1; Guo, Miao1,3; Li, He1; Hu, Xiangping4; Yang, Qihua1
关键词Nanoparticles p Ligands Platinum Polymers Supported Catalysts
刊名CHEMISTRY-A EUROPEAN JOURNAL
2017-06-07
DOI10.1002/chem.201700980
23页:7791-7797
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]AROMATIC KETONES ; SELECTIVE HYDROGENATION ; RUTHENIUM NANOPARTICLES ; GOLD NANOPARTICLES ; CATALYTIC-ACTIVITY ; ORGANIC-LIGANDS ; PHOSPHINE ; CO ; PD ; RH
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
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152194
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Int Coll, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Dalian Inst Chem Phys, Lab Fine Chem, Dalian, Peoples R China
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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.
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