Autor(es)

Tudino, Tatiane C. ; Nunes, Renan S. ; Mandelli, Dalmo ; Carvalho, Wagner A.

• Tipo de documento: Artigo Científico
• Fonte: RONTIERS IN CHEMISTR; v. 8, p. 11-pg., 2020-04-08.

Resumo

Both the catalytic production of 5-hydroxymethylfurfural (5-HMF) from carbohydrates and the use of a catalyst obtained from residues stand out for adding value to by-products and wastes. These processes contribute to the circular economy. In this work it was evaluated optimized conditions for 5-HMF production from fructose with high yield and selectivity. The reaction was catalyzed by an acidic carbon obtained from glycerol, a byproduct of the biodiesel industry. Special attention has been given to the use of dimethyl sulfoxide (DMSO) as a solvent and its influence on system activity, both in the presence and absence of O-2. Glycerol's carbon with acidic properties can be effectively used as catalyst in fructose dehydration, allowed achieving conversions close to 100% with 5-HMF selectivities higher than 90%. The catalyst can be reused in consecutive batch runs. The influence of DMSO in the presence of O-2 should be considered in the catalytic activity, as the stabilization of a reaction intermediate by the [O-2:DMSO] complex is favored and, both fructose conversion and 5-HMF yield increase. (AU)

• Processo FAPESP: 16/05006-5 - Remoção de contaminantes de efluentes da indústria farmacêutica utilizando novos materiais a partir de resíduos do biodiesel
• Beneficiário: Maraisa Gonçalves
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/24931-4 - Catalisadores alternativos para a conversão de polióis mediante aquecimento convencional e por micro-ondas
• Beneficiário: Wagner Alves Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular