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Soybean oil and beef tallow alcoholysis by acid heterogeneous catalysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
42452 45926 2009 7 PDF Available
Title
Soybean oil and beef tallow alcoholysis by acid heterogeneous catalysis
Abstract

Sulfonated polystyrene compounds (SPS) were synthesized from linear polystyrene (PS), leading to catalytically active polymeric materials with sulfonation degrees between 5.0 and 6.2 mmol SO3H/g of dry polymer. Catalyst performance was evaluated in beef tallow and soybean oil transesterification with ethanol and methanol. The SPS were used at 20 mol% of –SO3H groups in relation to the oil mass. Methanol:oil molar ratios of 3:1, 6:1, 9:1, and 100:1 were employed, and the reactions lasted between 3 and 18 h. The SPS samples were insoluble in the reaction media and led to conversions of 85 and 75% of refined soybean oil and beef tallow with a 53 mg KOH/g acid number, respectively. There was an increase in ester production for reactions carried out at higher methanol:oil molar ratio and, in some cases, products with as much as 94% methyl ester content were obtained. Therefore, sulfonated polymeric compounds obtained from linear polystyrene are efficient catalysts for the alcoholysis of refined vegetable oils and raw materials containing high acid numbers.

Graphical abstractSulfonated polystyrene compounds (SPS) were synthesized, leading catalytically active polymeric materials with high sulfonation degree. Catalyst performance was evaluated in beef tallow and soybean oil transesterification reactions. The SPS leading to conversion of 85 and 75% for soybean oil and beef tallow in to ethyl esters, respectively, and 94% of the soybean oil methyl esters. Therefore, sulfonated polymeric compounds obtained from linear polystyrene are efficient catalysts.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
SPS, sulfonated polystyrene; PS, polystyrene; PS-DVB-SO3H, sulfonated polystyrene divinylbenzene resins; TGA, thermogravimetric analysisHeterogeneous polymeric catalyst; Sulfonated polystyrene; Biodiesel; Methanolysis
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Soybean oil and beef tallow alcoholysis by acid heterogeneous catalysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 361, Issues 1–2, 20 June 2009, Pages 42–48
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