Green acid catalyst obtained from industrial wastes for glycerol etherification

Autor(es)

Goncalves, Maraisa ^{[1, 2]} ; Castro, Cinthia S. ^[3] ; Oliveira, Luiz C. A. ^[4] ; Carvalho, Wagner A. ^[1]

Afiliação do(s) autor(es)

^[1] Fed Univ ABC, Ctr Nat & Human Sci, BR-09210170 Santo Andre, SP - Brazil

^[2] Univ Fed Sao Paulo, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP - Brazil

^[3] Univ Fed Alfenas, Inst Sci & Technol, BR-37715400 Pocos De Caldas, MG - Brazil

^[4] Univ Fed Minas Gerais, Dept Chem, BR-31270901 Belo Horizonte, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Fuel Processing Technology; v. 138, p. 695-703, OCT 2015.
• Citações Web of Science: 3

Resumo

In this work several carbonaceous wastes (glycerin (G), waste coffee grounds (WC) and polyethylene terephthalate (PET)) were successfully used as precursors to obtain carbon-based catalysts to transform crude glycerol (from biodiesel production) into value added compounds through glycerol etherification. The X-ray diffraction data showed that the produced carbons are amorphous materials. MEV/EDS analyses showed much dispersed surface groups with an increased amount of sulfur (3.5 to 82%). Very promising results were obtained for glycerol etherification, reaching about 80% conversion and a high selectivity for the MTBG species (3-tert-butoxy-1,2-propanediol). The catalysts obtained from PET and WC wastes lead to the highest glycerol conversion and selectivity for MTBG, probably due to the higher acidity. These successful results suggest that these catalysts can be applied for glycerol waste conversion in order to obtain value added compounds. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/22264-4 - Aproveitamento de resíduos lignocelulósicos e de glicerol para preparação de carvões com propriedades ácidas
• Beneficiário: Maraisa Gonçalves
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 13/21160-6 - Conversão catalítica de glicerol e acetol promovida por nanopartículas metálicas suportadas em carbono e em peneiras moleculares
• Beneficiário: Wagner Alves Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/18529-0 - Preparação de carvão ativado com elevada área superficial utilizando como precursor o resíduos de biodiesel
• Beneficiário: Maraisa Gonçalves
• Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores