NDLI: Synthesis, characterization and catalytic properties of heterogeneous iron(III) tetradentate Schiff base complexes for the aerobic epoxidation of styrene

Content Provider	Springer Nature Link
Author	Yang, Ying Guan, Jingqi Qiu, Pengpeng Kan, Qiubin
Copyright Year	2009
Abstract	A series of hybrid mesoporous SBA-15 materials containing four iron(III) Schiff base complexes of the type [FeL$^{x}$(NO$_{3}$)] (x = 4–7, L = N,N′-bis(salicylidene)ethylenediamine, N,N′-bis(salicylidene)diethylenetriamine, N,N′-bis(salicylidene)o-phenylenediamine, N,N′-bis(3-nitro-salicylidene)ethylenediamine) was synthesized by a post-grafting route. The XRD, N$_{2}$ adsorption/desorption and TEM measurements confirmed the structural integrity of the mesoporous hosts, and the spectroscopic characterization techniques (FT-IR, UV–vis spectroscopy, $^{1}$H NMR) confirmed the ligands and the successful anchoring of iron(III) Schiff base complexes over the modified mesoporous support. Quantification of the supported ligand and metal was carried out by TG/DSC and ICP-AES techniques. The catalyst FeL$^{7}$-SBA resulting from N,N′-bis(3-nitro-salicylidene)ethylenediamine) ligand was considerably active for the aerobic epoxidation of styrene, in which the highest conversion of styrene reached 83.6%, and the selectivity to styrene oxide was 83.0%. Moreover, it was also found that the catalytic activity increases with the decrease in the electron-donating ability of the Schiff bases, and the selectivity varies according to the types of substituents in the ligands.
Starting Page	263
Ending Page	270
Page Count	8
File Format	PDF
ISSN	03404285
Journal	Transition Metal Chemistry
Volume Number	35
Issue Number	3
e-ISSN	1572901X
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-12-24
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic Chemistry Physical Chemistry Catalysis
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Inorganic Chemistry

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