5-Hydroxymethylfurfural and Furfural Base-Free Oxidation over AuPd Embedded Bimetallic Nanoparticles

Autor(es):Mostrar menos -

Ferraz, Camila P. ^{[1, 2]} ; Costa, Natalia J. S. ^[1] ; Teixeira-Neto, Erico ^[3] ; Teixeira-Neto, Angela A. ^[3] ; Liria, Cleber W. ^[4] ; Thuriot-Roukos, Joelle ; Machini, M. Teresa ^[4] ; Froidevaux, Renato ^[5] ; Dumeignil, Franck ^[2] ; Rossi, Liane M. ^[1] ; Wojcieszak, Robert ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05508000 Sao Paulo - Brazil

^[2] Univ Artois, UCCS, ENSCL, Univ Lille, CNRS, Cent Lille, F-59000 Lille - France

^[3] LNNano CNPEM, Lab Microscopia Elet, CP 6192, BR-13083970 Campinas - Brazil

^[4] Univ Sao Paulo, Inst Quim, Dept Bioquim, BR-05508000 Sao Paulo - Brazil

^[5] Univ Lille, INRA, ISA, Univ Artois, Univ Cote dOpale, EA 7394, ICV, F-59000 Lille - France

• Tipo de documento: Artigo Científico
• Fonte: CATALYSTS; v. 10, n. 1 JAN 2020.
• Citações Web of Science: 4

Resumo

The heterogeneous catalytic partial oxidation of alcohols and aldehydes in the liquid phase usually needs the addition of a homogeneous base, which in turn makes the products' recovery cumbersome, and can further induce undesired side reactions. In the present work, we propose the use of novel catalysts based on metallic Au, Pd and bimetallic AuPd nanoparticles embedded in a titanosilicate matrix. The as-prepared catalysts showed good efficiency in the base-free partial oxidation of furfural and 5-hydroxymethylfurfural. Au4Pd1@SiTi catalyst showed high selectivity (78%) to monoacids (namely, 5-formyl-2-furancarboxylic acid and 5-hydroxymethyl-2-furancarboxylic acid) at 50% 5-hydroxymethylfurfural (HMF) conversion. The selectivity even reached 83% in the case of furfural oxidation to furoic acid (at 50% furfural conversion). The performances of the catalysts strongly depended on the Au-Pd ratio, with an optimal value of 4:1. The pH of the solution was always below 3.5 and no leaching of metals was observed, confirming the stabilization of the metal nanoparticles within the titanosilicate host matrix. (AU)

• Processo FAPESP: 14/10824-3 - Estudo de catalisadores de ouro para reações de oxidação
• Beneficiário: Camila Palombo Ferraz
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/03235-0 - Valorização da biomassa oxidação do 5-hidroximetilfurfural (HMF) catalisada por nanopartículas
• Beneficiário: Camila Palombo Ferraz
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 14/15159-8 - Nanopartículas metálicas: desafios na preparação, estabilização e ativação para catálise
• Beneficiário: Liane Marcia Rossi
• Modalidade de apoio: Auxílio à Pesquisa - Regular