| Full text | |
| Author(s): |
Goncalves, Maraisa
[1]
;
Mantovani, Michelle
[1]
;
Carvalho, Wagner Alves
[1]
;
Rodrigues, Raphael
[1]
;
Mandelli, Dalmo
[1]
;
Albero, Joaquin Silvestre
[2]
Total Authors: 6
|
| Affiliation: | [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 |
| 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. (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 Opportunities: | 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 Opportunities: | Research Grants - Young Investigators Grants |