Metal-organic frameworks as selectivity regulators for hydrogenation reactions

	Metal-organic frameworks as selectivity regulators for hydrogenation reactions
	Zhao, Meiting 1; Yuan, Kuo 1,2; Wang, Yun 3; Li, Guodong 1; Guo, Jun 1; Gu, Lin 4; Hu, Wenping 2,5; Zhao, Huijun 3; Tang, Zhiyong 1
刊名	NATURE
	2016-11-03
卷号	539 期号:7627 页码:76-80
英文摘要	Owing to the limited availability of natural sources, the widespread demand of the flavouring, perfume and pharmaceutical industries for unsaturated alcohols is met by producing them from alpha,beta-unsaturated aldehydes, through the selective hydrogenation of the carbon-oxygen group (in preference to the carboncarbon group)(1). However, developing effective catalysts for this transformation is challenging(2-7), because hydrogenation of the carbon-carbon group is thermodynamically favoured(8). This difficulty is particularly relevant for one major category of heterogeneous catalyst: metal nanoparticles supported on metal oxides. These systems are generally incapable of significantly enhancing the selectivity towards thermodynamically unfavoured reactions, because only the edges of nanoparticles that are in direct contact with the metal-oxide support possess selective catalytic properties; most of the exposed nanoparticle surfaces do not(9-14). This has inspired the use of metal-organic frameworks (MOFs) to encapsulate metal nanoparticles within their layers or inside their channels, to influence the activity of the entire nanoparticle surface while maintaining efficient reactant and product transport owing to the porous nature of the material(15-18). Here we show that MOFs can also serve as effective selectivity regulators for the hydrogenation of alpha,beta-unsaturated aldehydes. Sandwiching platinum nanoparticles between an inner core and an outer shell composed of an MOF with metal nodes of Fe3+, Cr3+ or both (known as MIL-101; refs 19-21) results in stable catalysts that convert a range of alpha,beta-unsaturated aldehydes with high efficiency and with significantly enhanced selectivity towards unsaturated alcohols. Calculations reveal that preferential interaction of MOF metal sites with the carbon-oxygen rather than the carboncarbon group renders hydrogenation of the former by the embedded platinum nanoparticles a thermodynamically favoured reaction. We anticipate that our basic design strategy will allow the development of other selective heterogeneous catalysts for important yet challenging transformations.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35161]
专题	化学研究所_有机固体实验室
作者单位	1.Chinese Acad Sci, CAS Ctr Excellence Nanosci, Natl Ctr Nanosci & Technol, Key Lab Nanosyst & Hierarchy Fabricat, Beijing 100190, Peoples R China 2.Tianjin Univ, Sch Sci, Tianjin 300072, Peoples R China 3.Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Nathan, Qld 4222, Australia 4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Meiting,Yuan, Kuo,Wang, Yun,et al. Metal-organic frameworks as selectivity regulators for hydrogenation reactions[J]. NATURE,2016,539(7627):76-80.
APA	Zhao, Meiting.,Yuan, Kuo.,Wang, Yun.,Li, Guodong.,Guo, Jun.,...&Tang, Zhiyong.(2016).Metal-organic frameworks as selectivity regulators for hydrogenation reactions.NATURE,539(7627),76-80.
MLA	Zhao, Meiting,et al."Metal-organic frameworks as selectivity regulators for hydrogenation reactions".NATURE 539.7627(2016):76-80.