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题名: Highly oxidized Pt species stabilized inside carbon nanotubes for asymmetric hydrogenation
作者: Guan, Zaihong1;  Lu, Shengmei1;  Li, Can1
关键词: Carbon nanotube ;  alpha-Ketoester ;  Asymmetric hydrogenation ;  Platinum nanoparticle ;  Oxidized state
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2015-09-01
DOI: 10.1016/S1872-2067(15)60831-2
卷: 36, 期:9, 页:1535-1542
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The chemical state and its influence on Pt species in or outside of the channels of CNTs and the effect on the asymmetric hydrogenation of alpha-ketoester ikere investigated. XPS analysis showed that 13% Pt species in a highly oxidized state (Pt4+) were stabilized inside the channels in the presence of Na+. There were more highly oxidized Pt species inside the CNTs than outside. The highly oxidized Pt species promoted the interaction between the nanoparticle and chiral modifier, which is crucial for high enantioselectivity. Hydrogen temperature programmed desorption showed that Pt nanoparticles confined in the channels can better activate hydrogen, which contributed to their high activity even at low hydrogen pressure. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: ALPHA,BETA-UNSATURATED CARBOXYLIC-ACIDS ;  CATALYTIC CASCADE REACTION ;  ENANTIOSELECTIVE HYDROGENATION ;  PLATINUM CATALYSTS ;  METAL-SURFACES ;  NANOPARTICLES ;  CINCHONIDINE ;  CONFINEMENT ;  PERFORMANCE ;  DESORPTION
语种: 英语
WOS记录号: WOS:000361084300014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146534
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Guan, Zaihong,Lu, Shengmei,Li, Can. Highly oxidized Pt species stabilized inside carbon nanotubes for asymmetric hydrogenation[J]. CHINESE JOURNAL OF CATALYSIS,2015,36(9):1535-1542.
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