Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation

doi:10.1039/c7cy00394c

	Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation
	Yang, Qihua 1; Guo, Miao 1,2; Li, Can 1
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2017-06-07
卷号	7 页码:2221-2227
DOI	10.1039/c7cy00394c
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
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/152246]
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.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
推荐引用方式 GB/T 7714	Yang, Qihua,Guo, Miao,Li, Can. 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	Yang, Qihua,Guo, Miao,&Li, Can.(2017).Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation.CATALYSIS SCIENCE & TECHNOLOGY,7,2221-2227.
MLA	Yang, Qihua,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.