中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Ultrasmall Platinum Stabilized on Triphenylphosphine-Modified Silica for Chemoselective Hydrogenation
作者: 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
发表日期: 2017-06-07
DOI: 10.1002/chem.201700980
卷: 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
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.
关键词[WOS]: AROMATIC KETONES ;  SELECTIVE HYDROGENATION ;  RUTHENIUM NANOPARTICLES ;  GOLD NANOPARTICLES ;  CATALYTIC-ACTIVITY ;  ORGANIC-LIGANDS ;  PHOSPHINE ;  CO ;  PD ;  RH
语种: 英语
WOS记录号: WOS:000402799200024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152194
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


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

Recommended Citation:
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.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Jayakumar, Sanjeevi]'s Articles
 [Modak, Arindam]'s Articles
 [Guo, Miao]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Jayakumar, Sanjeevi]‘s Articles
 [Modak, Arindam]‘s Articles
 [Guo, Miao]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace