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Solid base catalysis of calcium glyceroxide for a reaction to convert vegetable oil into its methyl esters

Paper ID Volume ID Publish Year Pages File Format Full-Text
41518 45892 2010 8 PDF Available
Title
Solid base catalysis of calcium glyceroxide for a reaction to convert vegetable oil into its methyl esters
Abstract

When calcium oxide is employed for transesterification of vegetable oil at reflux of methanol, calcium oxide is turned into calcium glyceroxide by combining with glycerol of the by-product. As well as calcium oxide, calcium glyceroxide seemed to catalyze the vegetable oil transesterification. In the present paper, the solid base catalysis of calcium glyceroxide was investigated by IR spectroscopy using methanol as the molecular probe. The measured spectra indicated that calcium glyceroxide was combined with methanol at the temperature of 333 K. Chemical composition of the produced calcium compound was estimated at CH3O-Ca-O(OH)2C3H5. The IR spectrum of the calcium alkoxide indicated that hydrogen bond was formed among the glyceroxyl OH groups and methanol. Data from the soybean oil transesterification, which was carried out at 298 K, elucidated that the calcium alkoxide functioned as the solid base catalyst. At the same reaction temperature, calcium glyceroxide did not interact chemically with methanol, and sent out only the homogeneous catalysis.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (91 K)Download as PowerPoint slideResearch highlights▶ Solid base catalysis of calcium glyceroxide was investigated by IR spectroscopy. ▶ Calcium glyceroxide was combined with methanol used as a molecular probe at 333 K. ▶ The produced calcium alkoxide functioned as the solid base catalyst. ▶ The heterogeneous catalytic reaction did not occurred on calcium glyceroxide.

Keywords
Solid base catalyst; Calcium glyceroxide; Calcium methoxide; Transesterification; Biodiesel
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Solid base catalysis of calcium glyceroxide for a reaction to convert vegetable oil into its methyl esters
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 390, Issues 1–2, 20 December 2010, Pages 11–18
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