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Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation
Guo, Miao1,2; Li, Can1; Yang, Qihua1
刊名CATALYSIS SCIENCE & TECHNOLOGY
2017-06-07
DOI10.1039/c7cy00394c
7页:2221-2227
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]CHEMOSELECTIVE HYDROGENATION ; SELECTIVE CATALYSTS ; MILD CONDITIONS ; NANOPARTICLES ; EFFICIENT ; SIZE ; NANOSTRUCTURES ; OXIDATION ; CLUSTERS ; CARBON
英文摘要Tuning the catalytic performance of metal nanoparticles (NPs) is very important in nanocatalysis. Herein, we report that amine- rich mesoporous silica hollow nanospheres (HS-NH2) synthesized by one-pot condensation could efficiently stabilize ultra-small Pd NPs and also increase the surface electron density of Pd NPs due to the coordinating and electron-donating effects of the amine group. Pd NPs supported on HSNH2 afford TOF as high as 5052 h(-1) in quinoline hydrogenation reaction and are much more active than Pd/C with a TOF of 960 h(-1) as well as most reported solid catalysts. The intrinsic activity of Pd NPs increases as the particle size of Pd decreases, revealing that quinoline hydrogenation is a structure-sensitive reaction. The results of TEM, XPS, CO adsorption and CO stripping voltammetry indicate that the high activity of Pd NPs supported on HS-NH2 is mainly attributed to their ultra-small particle size and high surface electron density. Our primary results demonstrate that the organo-modified silica nanospheres are promising solid supports for modifying the electronic properties of metal NPs supported and consequently tailoring their catalytic functions.
语种英语
WOS记录号WOS:000403002700008
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152246
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, Beijing 100039, Peoples R China
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Guo, Miao,Li, Can,Yang, Qihua. Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation[J]. CATALYSIS SCIENCE & TECHNOLOGY,2017,7:2221-2227.
APA Guo, Miao,Li, Can,&Yang, Qihua.(2017).Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation.CATALYSIS SCIENCE & TECHNOLOGY,7,2221-2227.
MLA Guo, Miao,et al."Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation".CATALYSIS SCIENCE & TECHNOLOGY 7(2017):2221-2227.
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