DICP OpenIR
Subject Area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)
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2011
ISSN待补充
DOI10.1039/c0cp01828g
Volume13Issue:7Pages:2504-2511
Indexed BySCI
SubtypeArticle
Department5
Funding Project506;503
Contribution Rank1,1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordAQUEOUS HYDROGEN-PEROXIDE ; HIGHLY ENANTIOSELECTIVE OXIDATION ; TWIN CORONET PORPHYRINS ; KINETIC RESOLUTION ; KEY INTERMEDIATE ; IRON COMPLEXES ; CATALYSTS ; SULFOXIDATION ; TEMPERATURE ; OPC-29030
AbstractEncapsulation 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.
Language英语
WOS IDWOS:000286890500007
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/115735
Collection中国科学院大连化学物理研究所
Corresponding AuthorYang QH(杨启华); Li C(李灿)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
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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