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Transesterification of rapeseed oil with methanol using CaO and active carbon powders encapsulated microcapsule under the light irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
39818 45837 2014 7 PDF Available
Title
Transesterification of rapeseed oil with methanol using CaO and active carbon powders encapsulated microcapsule under the light irradiation
Abstract

•CaO-active carbon-loaded microcapsule exhibited high FAME yield at 308 K.•Active carbon powder acted as a light absorber and the heat supplier.•Light-driven transesterification with catalyst-loaded microcapsule was proposed.•The dissolution of Ca species into FAME phase was significantly suppressed.

Transesterification of rapeseed oil with methanol to fatty acid methyl ester (FAME) was conducted using microcapsules loaded with CaO catalyst and active carbon powder under the light irradiation. About 80% of FAME yield was obtained after 6 h of reaction with keeping the temperature of reactant mixture (rapeseed oil, methanol, and tetrahydrofuran (THF)) at 308 K. This is probably because encapsulated active carbon powder in the microcapsule absorbed the near-infrared and visible ranges of irradiated light, and then transferred the heat inside the microcapsule which leads to higher temperature of inside microcapsule than that of reaction media/bulk. The results of ICP analyses for both FAME and glycerol phases showed that the amount of leached Ca species was significantly reduced due to lower reaction temperature and microcapsule usage. XRD patterns of tested catalysts indicated that the formation of calcium diglyceroxide phase during the transesterification was remarkably retarded for the case of CaO-active carbon-loaded microcapsule in contrast to a conventional process with CaO powder. This light-driven transesterification of rapeseed oil with methanol using catalyst-loaded microcapsule is promising system owing to high FAME yield and low amount of Ca species leaching into FAME phase.

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Keywords
Biodiesel; Microcapsule; CaO catalyst; Light irradiation; Active carbon
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Transesterification of rapeseed oil with methanol using CaO and active carbon powders encapsulated microcapsule under the light irradiation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 475, 5 April 2014, Pages 69–75
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