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Immobilized molybdenum acetylacetonate complex on montmorillonite K-10 as catalyst for epoxidation of vegetable oils

Paper ID Volume ID Publish Year Pages File Format Full-Text
41411 45888 2011 9 PDF Available
Title
Immobilized molybdenum acetylacetonate complex on montmorillonite K-10 as catalyst for epoxidation of vegetable oils
Abstract

Heterogeneous catalyst was obtained by the direct immobilization of molybdenum compound on montmorillonite K10 clay. The resultant solid was characterized by inductively coupled plasma optical emission spectrometry (ICP-OES), X-ray diffractometry (XRD), scanning electron microscopy coupled in a energy dispersive X-ray spectrometer (SEM-EDS), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller and Barret–Joyner–Halenda isotherms (BET/BJH), ultraviolet–visible diffuse reflectance spectroscopy (UV–vis-DRS) and Fourier transform infrared spectroscopy with attenuated total reflection (FTIR-ATR). The catalyst was tested for the epoxidation of both soybean and castor oils, using tert-butyl hydroperoxide (TBHP) as oxidizing agent. After the first use, the immobilized catalyst showed an enhanced activity and also catalytic stability in recycling experiments. The best results for epoxidation reactions concerning castor oil were observed under conditions of 80 °C for 24 h (100% conversion and 75% selectivity) and catalytic reuse.

Graphical abstract.Figure optionsDownload full-size imageDownload high-quality image (109 K)Download as PowerPoint slideHighlights► In this work, molybdenum (VI) complex was immobilized onto montmorillonite clay. ► The catalyst was tested for the epoxidation of both soybean and castor oils. ► The catalyst showed high performance for epoxidation reactions of vegetable oils. ► After the first use, the catalyst showed an enhanced activity in recycling experiments. ► The best results for epoxidation reactions were obtained for castor oil.

Keywords
Molybdenum (VI) acetylacetonate complex; Montmorillonite K10; Epoxidation; Heterogeneous catalysis; Soybean oil; Castor oil
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Immobilized molybdenum acetylacetonate complex on montmorillonite K-10 as catalyst for epoxidation of vegetable oils
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 403, Issues 1–2, 22 August 2011, Pages 119–127
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us