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学科主题物理化学
Encapsulation of chiral Fe(salan) in nanocages with different microenvironments for asymmetric sulfide oxidation
Li, Bo; Bai, Shiyang; Wang, Peng; Yang, Hengquan; Yang, Qihua; Li, Can; Yang QH(杨启华); Li C(李灿)
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2011
ISSN待补充
DOI10.1039/c0cp01828g
13期:7页:2504-2511
收录类别SCI
文章类型Article
部门归属5
项目归属506;503
产权排名1,1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
关键词[WOS]AQUEOUS HYDROGEN-PEROXIDE ; HIGHLY ENANTIOSELECTIVE OXIDATION ; TWIN CORONET PORPHYRINS ; KINETIC RESOLUTION ; KEY INTERMEDIATE ; IRON COMPLEXES ; CATALYSTS ; SULFOXIDATION ; TEMPERATURE ; OPC-29030
英文摘要Encapsulation of chiral Fe(salan) in nanocages with different microenvironments for asymmetric sulfide oxidation; The solid catalysts for asymmetric oxidation of sulfides were prepared by encapsulating a chiral iron salan complex [Fe(salan)] in the nanocages of mesoporous silicas. The microenvironment of nanocages was finely tuned using silylation reagents with different kinds of organic groups, such as propyl (C3), 1-butyl-3-propyl-4,5-dihydroimidazolium bromide (ILBr), N-propyl-N,N,N-tri-n-butylammonium chloride (TBNCl) and N-propyl-N, N, N-tri-n-butylammonium bromide (TBNBr), and investigated by water and benzene adsorption. Fe(salan) encapsulated in the amphiphilic nanocage shows much higher enantioselectivity and activity than that in hydrophobic or hydrophilic nanocage for the asymmetric oxidation of thioanisole using H(2)O(2) as oxidant. The TOF of Fe(salan) encapsulated in the nanocage modified with TBNBr can reach as high as 220 h(-1), even higher than homogeneous Fe(salan) with a TOF of 112 h(-1). The enhanced catalytic activity is mainly due to the fast diffusion of H(2)O(2) and sulfide in the amphiphilic nanocage. The above results suggest that the microenvironment modification of the nanocage is an efficient method to synthesize highly efficient solid catalysts for asymmetric catalysis.
语种英语
WOS记录号WOS:000286890500007
引用统计
被引频次:30[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/321008/115735
专题中国科学院大连化学物理研究所
通讯作者Yang QH(杨启华); Li C(李灿)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Li, Bo,Bai, Shiyang,Wang, Peng,et al. Encapsulation of chiral Fe(salan) in nanocages with different microenvironments for asymmetric sulfide oxidation[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2011,13(7):2504-2511.
APA Li, Bo.,Bai, Shiyang.,Wang, Peng.,Yang, Hengquan.,Yang, Qihua.,...&李灿.(2011).Encapsulation of chiral Fe(salan) in nanocages with different microenvironments for asymmetric sulfide oxidation.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,13(7),2504-2511.
MLA Li, Bo,et al."Encapsulation of chiral Fe(salan) in nanocages with different microenvironments for asymmetric sulfide oxidation".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 13.7(2011):2504-2511.
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