Study on the Epoxidation ofα,β-Unsaturated Ketones Catalyzed by MCM-41 Supported Schiff Base
نویسندگان
چکیده
منابع مشابه
New Molybdenum Epoxidation Catalyst Derived From Nanoporous MCM-41 Supported Glycine Schiff-Base
Covalent grafting of the nanoporous molecular sieve MCM-41 with 3- aminopropyl trimethoxysilane and acetyl acetone (acac) successively gave modified MCM-41 (acacAmpMCM-41). Reaction of the resulted material with glycine afforded the corresponding supported glycine Schiff base ligand and subsequent reaction with [bis(acetylacetonato)dioxomolybdenum(VI)] was lead to molybdenum complex suppor...
متن کاملnew molybdenum epoxidation catalyst derived from nanoporous mcm-41 supported glycine schiff-base
covalent grafting of the nanoporous molecular sieve mcm-41 with 3-aminopropyl trimethoxysilane and acetyl acetone (acac) successively gave modified mcm-41 (acacampmcm-41). reaction of the resulted material with glycine afforded the corresponding supported glycine schiff base ligand and subsequent reaction with [bis(acetylacetonato)dioxomolybdenum(vi)] was lead to molybdenum complex supported on...
متن کاملPreparation and Characterization of Supported Molybdenum and Tungsten Schiff Base Complexes on MCM-41 as Nanocatalysts for the Epoxidation of Olefins
Two new heterogenized epoxidation nanocatalysts based on molybdenum and tungsten compounds were prepared withcovalent grafting of MCM-41 with 3-aminoropropyl trimethoxysilane and subsequent reaction with diphenylphosphinobenzaldehyde and complexation with M (Mo, W)O2(acac)2. X-ray diffraction and nitrogen sorption analyses revealed the preservation of the textural properti...
متن کاملMn(II)-Schiff base complex immobilized onto MCM-41 matrix as a heterogeneous catalyst for epoxidation of alkenes
A heterogeneous catalyst containing manganese Schiff base complex (derived from 2,4-dihydroxybenzadehyde and 1,2-phenylenediamine) is produced by covalent anchoring in MCM-41 matrix. The synthesized catalyst was characterized by X-ray diffraction pattern (XRD), inductivity coupled plasma (ICP), Fourier transform infrared (FT-IR) spectroscopy, N2 sorbtion-desorbtion isotherm and by tr...
متن کاملSynthesis and characterization of MCM-41-supported Ba2SiO4 base catalyst
A novel MCM-41-supported base catalyst, Ba-MCM-41, was synthesized with a modified impregnation method. Ba2SiO4 was synthesized on the MCM-41 pore wall as confirmed by characterization using X-ray diffraction, X-ray photoelectron spectroscopy, X-ray fluorescence, N2 adsorption, Si MAS NMR and transmission electron microscopy. It was also demonstrated that a highly ordered Ba-MCM-41 catalyst wit...
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ژورنال
عنوان ژورنال: Acta Chimica Sinica
سال: 2012
ISSN: 0567-7351
DOI: 10.6023/a1111283