66620-32-4Relevant articles and documents
Synthesis, characterization and catalytic properties of heterogeneous iron(III) tetradentate Schiff base complexes for the aerobic epoxidation of styrene
Yang, Ying,Guan, Jingqi,Qiu, Pengpeng,Kan, Qiubin
experimental part, p. 263 - 270 (2011/11/06)
A series of hybrid mesoporous SBA-15 materials containing four iron(III) Schiff base complexes of the type [FeLx(NO3)] (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, N2 adsorption/desorption and TEM measurements confirmed the structural integrity of the mes-oporous hosts, and the spectroscopic characterization tech-niques(FT-IR, UV-visspectroscopy, 1HNMR)confirmedthe 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 FeL7-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 inthe electron-donating ability of the Schiff bases, and the selectivity varies according to the types of substituents in the ligands. Springer Science+Business Media B.V. 2009.
