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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Goncalves, Maraisa [1] ; Mantovani, Michelle [1] ; Carvalho, Wagner Alves [1] ; Rodrigues, Raphael [1] ; Mandelli, Dalmo [1] ; Albero, Joaquin Silvestre [2]
Total Authors: 6
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Alicante, Dept Quim Inorgan, Lab Mat Avanzados, E-03080 Alicante - Spain
Total Affiliations: 2
Document type: Journal article
Source: CHEMICAL ENGINEERING JOURNAL; v. 256, p. 468-474, NOV 15 2014.
Web of Science Citations: 23

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. (C) 2014 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/14626-3 - Catalytic convertion of glycerol in liquid and vapor phase to products of higher commercial value
Grantee:Wagner Alves Carvalho
Support type: Regular Research Grants
FAPESP's process: 11/22264-4 - Utilization of lignocelulosic and glycerol wastes for production of catalysts with acidic properties
Grantee:Maraisa Gonçalves
Support type: Research Grants - Young Investigators Grants