Sulfonated porous carbon catalysts for biodiesel production: Clear effect of the carbon particle size on the catalyst synthesis and properties

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Title: Sulfonated porous carbon catalysts for biodiesel production: Clear effect of the carbon particle size on the catalyst synthesis and properties
Authors: Tamborini, Luciano H. | Casco, Mirian Elizabeth | Militello, María Paula | Silvestre-Albero, Joaquín | Barbero, César A. | Acevedo, Diego F.
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Biodiesel | Heterogeneous catalyst | Porous carbon | Acid catalyst
Knowledge Area: Química Inorgánica
Issue Date: Aug-2016
Publisher: Elsevier
Citation: Fuel Processing Technology. 2016, 149: 209-217. doi:10.1016/j.fuproc.2016.04.006
Abstract: Sulfonated porous carbons (PCs-SO3H) are prepared by the sol-gel reaction of resorcinol and formaldehyde. The porosity is maintained during drying using a cationic polyelectrolyte as pore stabilizer. It was found that varying the Resorcinol/Na2CO3 molar rate, different resins are produced which, after pyrolysis, give carbonaceous materials with different textural properties. It seems that a Resorcinol/Na2CO3 molar ratio of 200:1 was the optimal condition to produce a well-developed porous structure. Both resins and carbon materials are sulfonated by treatment with sulphuric acid. The relation between the carbon particles size, the sulfonation efficiency and its performance as a catalyst is studied. The higher amount of sulfonic groups, and thermal stability, as well as better catalytic performance, was obtained when smaller porous carbon particles were chosen by sieving. PCs-SO3H exhibited high efficiency for the esterification reaction and high performance for biodiesel production. The catalysts can be recycled several times with a minimal loss of activity. Thermal analysis evidenced stability up to ca. 200 °C, allowing the use of this catalyst at high temperature. The simple synthesis and low cost of the PCs-SO3Hs make them promising catalysts for the synthesis of biodiesel.
Sponsor: D.F. Acevedo and C.A. Barbero, are permanent research fellows of CONICET. L. Tamborini and P. Militello thank CONICET for graduate fellowships. The funding of FONCYT: PICT 2013-2716, CONICET: PIP 2014-2016, No. 11220130100663CO, MinCyT-Cordoba and SECYT-UNRC: PPI 2014-2015, is gratefully acknowledged. L. Tamborini thanks the program BECAR (MinCTIP-AR) for the financing of a research stay at Alicante University (Spain).
ISSN: 0378-3820 (Print) | 1873-7188 (Online)
DOI: 10.1016/j.fuproc.2016.04.006
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2016 Elsevier B.V.
Peer Review: si
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Appears in Collections:INV - LMA - Artículos de Revistas

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