Highly porous niobium-containing silica glasses applied to the microwave-assisted conversion of fructose into HMF

Author(s)

Costa, Maria J. F. ; Goncalves, Alexandre A. S. ; Rinaldi, Roberto ; Bradtmueller, Henrik ; Eckert, Hellmut ; Ferreira, Eduardo B.

• Document type: Journal article
• Source: Catalysis Communications; v. 174, p. 10-pg., 2022-12-06.

Abstract

Metal dispersion is key for designing highly active and well-defined catalytic systems. Herein, to shed light on the effects of Nb dispersion on the conversion of fructose into HMF, highly porous silica glasses grafted with niobium oxide were prepared. Preliminary catalytic screening was done for the microwave-assisted conversion of fructose into 5-hydroxymethylfurfural (HMF) in a biphasic system. The highly porous silica glasses impregnated with niobium oxide presented HMF productivities about 10-to 20 times higher than the mesoporous NbOPO4 reference material. Intriguingly, humin formation correlates with HMF yield regardless of the catalyst employed, although metal dispersion influences the acidity profile. (AU)

• FAPESP's process: 16/14165-0 - Meso/macroporous ceramics for catalytic conversion of lignocellulosic biomass into chemicals of industrial interest
• Grantee: Maria José Fonseca Costa
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 19/26399-3 - Elucidating structural rearrangements during glass relaxation and crystallization
• Grantee: Henrik Bradtmüller
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
• Grantee: Edgar Dutra Zanotto
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 19/12884-7 - Applications of new catalytic systems in lignocellulosic biomass conversion into chemicals and fuels
• Grantee: Maria José Fonseca Costa
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor