Synthesis and characterization of nanocomposite based on polymer as a highly effective supported catalyst in oxidation of alkenes
Journal Title: Asian Journal of Green Chemistry - Year 2017, Vol 1, Issue 2
Abstract
Polyphosphotungstate (denoted as PPT) was supported on polypyrrol as organic support (abbreviated as PTT@Ppy) to produce catalytic active supported catalyst. This catalyst was characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FESEM) and UV-vis diffuse reflectance spectroscopy (UV-DRS). The catalyst showed high catalytic activity in the oxidation of alkenes under optimized conditions. In this work, cyclooctene was selected as model alkene for investigation of oxidation procedure, and then under optimized condition, other alkenes were examined. The catalyst could be readily separated from the catalytic system using the centrifuging and loss of activity was negligible when the catalyst was recovered in five consecutive cycles. For this research, a statistical method called response surface methodology (RSM) has been used to economize the number of experiments and their meaningful interpretation. The effect of various factors such as catalyst amount, time, oxidant amount and temperature on oxidation of alkenes were investigated. Optimization results for 0.2 mmol cyclooctene showed that maximum oxidation efficiency 88% was achieved at the optimum conditions: catalyst amount 200 mg, temperature 63, time 5 h and oxidant = 2.15 mmol.
Authors and Affiliations
Hossein Salavati, Abbas Teimouri, Shahnaz Kazemi
Keywords
Related Articles
- EP ID EP252356
- DOI 10.22631/ajgc.2017.94610.1012
- Views 84
- Downloads 0
Application of modified sawdust for solid phase extraction, preconcentration and determination of trace lead in water samples
A new sorbent was provided and exerted for separation and preconcentration of Pb (II) before the determination of lead ions by flame atomic absorption spectrometry. The normative studies on extraction, separation and pre...
One-pot synthesis of spirooxindole derivatives catalyzed by ZnFe2O as a magnetic nanoparticles
ZnFe2O4 as a novel nanoparticle was prepared and characterized using x-ray diffraction (XRD) analysis, energy dispersive x-ray (EDX), vibrating sample magnetometry (VSM), and fourier-transform infrared (FTIR) spectra. Th...
Identification and characterization of diterpenes from ethyl acetate fraction of stem barks of Boswellia papyrifera (del) hochst, sudanese medicinal plant
In this study, the diterpen compounds present in the ethyl acetate fraction of stem bark of Boswellia papyrifera grown in Sudan were investigated using gas chromatography-mass spectrometry (GC-MS), based upon interpretat...
Synthesis of 3-amino-5-methyl-[1,1'-biaryl]-2,4-dicarbonitriles using ZnFe2O4 magnetic nanoparticles
This work studies an efficient, one-pot pseudo multi-component synthesis of 3-amino-5-methyl-[1, 1'-biaryl]-2, 4-dicarbonitriles. This reaction performed under solvent free conditions in the presence of ZnFe2O4 magnetic...
Synthesis of spiro [cyclobutane-1,2'-indene]-1',3'-dione under a new multi-site phase-transfer catalyst combined with ultrasonication-a kinetic study
In the present study, kinetics of synthesis of spiro[cyclobutane-1,2’-indene]-1’,3’-dione was successfully carried out by spirolation of indene-1,3-dione with 1,3-dibromo propane using aqueous potassium hydroxide and cat...