Biodiesel wastes: An abundant and promising source for the preparation of acidic catalysts for utilization in etherification reaction

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Title: Biodiesel wastes: An abundant and promising source for the preparation of acidic catalysts for utilization in etherification reaction
Authors: Gonçalves, Maraisa | Mantovani, Michelle | Carvalho, Wagner Alves | Rodrigues, Raphael | Mandelli, Dalmo | Silvestre-Albero, Joaquín
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Glycerol waste | Etherification | Sulfonated black carbon
Knowledge Area: Química Inorgánica
Issue Date: 15-Nov-2014
Publisher: Elsevier
Citation: Chemical Engineering Journal. 2014, 256: 468-474. doi:10.1016/j.cej.2014.07.013
Abstract: Environmentally friendly sulfonated black carbon (BC) catalysts were prepared from biodiesel waste, glycerol. These black carbons (BCs) contain a high amount of acidic groups, mainly sulfonated and oxygenated groups. Furthermore, these catalysts show a high catalytic activity in the glycerol etherification reaction with tert-butyl alcohol, the activity being larger for the sample prepared with a higher glycerol:sulfuric acid ratio (1:3). The yield for mono-tert-butyl glycerol (MTBG), di-tert-butyl glycerol (DTBG) and tri-tert-butyl-glycerol (TTBG) were very similar to those obtained using a commercial resin, Amberlyst-15. Furthermore, experimental results show that the carbon with the lowest acidic surface group content, BC prepared in minor glycerol:sulfuric acid ratio (10:1), can be chemically treated after carbonization to achieve an improved catalytic activity. The activity of all BCs is high and very similar, about 50% and 20% for the MTBG and DTBG + TTBG, respectively.
Sponsor: This work was supported by FAPESP-Brazil (Project number 2011/22264-4, 2011/14626-3).
ISSN: 1385-8947 (Print) | 1873-3212 (Online)
DOI: 10.1016/j.cej.2014.07.013
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - LMA - Artículos de Revistas

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