Issue 11, 2011
From the journal:

Green Chemistry

Silica-supported guanidinecatalyst for continuous flow biodiesel production

João M. Balbino,a   Eliana W. de Menezes,a   Edilson V. Benvenutti,b   Renato Cataluña,a   Günter Ebelinga  and  Jairton Dupont*a  

* Corresponding authors

a Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre, RS Brazil
E-mail: Jairton.dupont@ufrgs.br
Fax: +55 51 33087204
Tel: +55 51 33086321

b Laboratório de Química do Estado Sólido e de Superfícies, Institute of Chemistry, UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre, RS Brazil
E-mail: benvenutti@iq.ufrgs.br
Fax: +55 51 33087204
Tel: +55 51 33087176

Abstract

The new silylant agent 3-(N,N′-dicyclohexylguanidine)-propyltrimethoxysilane (GPMS) was prepared straightforwardly in high yield by the simple reaction between 3-aminopropyltrimethoxysilane and dicyclohexylcarbodiimide. This new organosilane containing the basic dicyclohexylguanidine group covalently attached on silica gel is an efficient heterogeneous catalyst for the production of biodiesel. Conversions up to 98% were obtained for soybean oil methanolysis at 353 K for 3 h. This catalytic system was transposed to a semi-pilot scale in a continuous flow reactor and gave 44% conversion. The calculated activation energy of the methanolysis in this continuous system indicated that the reaction is probably under mass transfer limitations.

Graphical abstract: Silica-supported guanidine catalyst for continuous flow biodiesel production

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Article information

DOI
https://doi.org/10.1039/C1GC15727B
Article type
Paper
Submitted
20 Jun 2011
Accepted
20 Jul 2011
First published
17 Aug 2011

Green Chem., 2011,13, 3111-3116

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Silica-supported guanidine catalyst for continuous flow biodiesel production

J. M. Balbino, E. W. de Menezes, E. V. Benvenutti, R. Cataluña, G. Ebeling and J. Dupont, Green Chem., 2011, 13, 3111 DOI: 10.1039/C1GC15727B

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