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Synthesis of amine-functionalized mesoporous silica basic catalysts for biodiesel production

Paper ID Volume ID Publish Year Pages File Format Full-Text
54528 47012 2014 7 PDF Available
Title
Synthesis of amine-functionalized mesoporous silica basic catalysts for biodiesel production
Abstract

•Amine-functionalized MCM-41 catalysts were prepared.•The CP/MAS NMR showed that the bases are covalently bounded to the mesoporous MCM-41.•The catalysts were studied in the transesterification of soybean oil with methanol.•Up to 99% yield in biodiesel was obtained with the guanidine-derived catalyst.

Amine-functionalized MCM-41 were prepared for use as basic heterogeneous catalysts in trasesterification of soybean oil to produce biodiesel. The fuctionalization was obtained by reacting the silanol groups of the MCM-41 material with 3-amino-propyl-triethoxy-silane, or in two steps by firstly reacting the MCM-41 with 3-chloro-propyl-triethoxy-silane and then, undergoing nucleophilic substitution with piperazine or with a guanidine-derived compound (1,5,7-triazabicyclo [4,4,0] dec-5-ene). The introduction of the organic moieties was confirmed by 29Si and 13C CPMAS NMR spectroscopy, as well as by chemical analysis (CHN). The catalysts were tested in the transesterification of soybean oil with methanol. Up to 99% yield in biodiesel at 70 °C and 3 h of reaction were obtained with the guanidine-derived catalyst. The other amine-derived catalysts were less active for the production of biodiesel, presenting lower yields under more severe reaction conditions. These results can be explained by the intrinsic basicity of the amines.

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Keywords
Biodiesel; Guanidine; MCM-41; Transesterification; Triglycerides
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Synthesis of amine-functionalized mesoporous silica basic catalysts for biodiesel production
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 226, 1 May 2014, Pages 210–216
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