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Simultaneous esterification and transesterification for biodiesel synthesis by a catalyst consisting of sulfonated single-walled carbon nanohorn dispersed with Fe/Fe2O3 nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
39283 45816 2015 8 PDF Available
Title
Simultaneous esterification and transesterification for biodiesel synthesis by a catalyst consisting of sulfonated single-walled carbon nanohorn dispersed with Fe/Fe2O3 nanoparticles
Abstract

•SO3H-Fe/Fe2O3-SWCNH can catalyze simultaneous esterification and transesterification.•This study showed the selectivity of acid site in SWCNH porous.•The yield of methyl butyrate can be enhanced by increasing the palmitic acid content.

The simultaneous esterification of palmitic acid and transesterification of tributyrin is investigated using a solid acid catalyst newly developed. This catalyst consists of porous single-walled carbon nanohorn (SWCNH) dispersed with Fe/Fe2O3-mixed nanoparticles. The esterfication of palmitic acid is initially catalyzed by this catalyst, and the transesterification of tributyrin can be observed after most of palmitic acid was consumed. Contrary to a general expectation that the addition of a free fatty acid usually has poisonous effect on transesterification of tributyrin, the addition of palmitic acid shows an effect to enhance the yield of methyl butyrate. As one of the reasons, the palmitic acid adsorbed on Fe/Fe2O3 particles placed in the pores of the catalyst may attract tributyrin molecules, and tributyrin concentrated thereon may diffuse to the acidic sites on the catalyst. However, this effect seems to be reduced significantly when the reaction temperature is high.

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Keywords
Biodiesel; Solid acid catalyst; Sulfonation; Single-walled carbon nanohorn; Iron oxide nanoparticle
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Simultaneous esterification and transesterification for biodiesel synthesis by a catalyst consisting of sulfonated single-walled carbon nanohorn dispersed with Fe/Fe2O3 nanoparticles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 497, May 2015, Pages 145–152
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