Sulfonated niobia and pillared clay as catalysts in etherification reaction of glycerol

Autor(es)

Celdeira, Patricia A. ^[1] ; Goncalves, Maraisa ^[1] ; Figueiredo, Fldvia C. A. ^[1] ; Dal Bosco, Sandra Maria ^[1] ; Mandelli, Dalmo ^[1] ; Carvalho, Wagner A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed ABC, Ctr Ciencias Nat Humanas, BR-09210170 Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: APPLIED CATALYSIS A-GENERAL; v. 478, p. 98-106, MAY 20 2014.
• Citações Web of Science: 22

Resumo

Sulfonated niobia (HY-340 CBMM) and pillared clay (Fluka) were tested in the catalytic conversion of glycerol by etherification reactions. The solids were treated with concentrated fuming sulfuric acid (AS100 and NS100), and a 30% aqueous solution of this acid (AS30 and NS30). Both the presence of sulfur and the increase in the acidity of the solids demonstrate the suitability of the sulfonation process, especially in samples treated with concentrated fuming sulfuric acid. The best catalyst for the reaction of etherification with tert-butyl alcohol was AS100, with a glycerol conversion of 95% after 5 h at 393 K and yield of 60.3, 33.2 and 5.4%, respectively for mono-tert-butyl-glycerol (MTBG), di-tert-butyl-glycerol (DTBG) and tri-tert-butyl-glycerol (TTBG). (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 09/07125-8 - Conversão catalítica do glicerol mediada por argilas pilarizadas, carvões ativados e polímeros condutores orgânicos
• Beneficiário: Flávia Camargo Alves Figueiredo
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 11/14626-3 - Conversão catalítica do glicerol em fase líquida e gasosa em produtos com maior valor comercial
• Beneficiário: Wagner Alves Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• 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