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

Autor: Cleber Wanderlei Liria, Camila P. Ferraz, Liane M. Rossi, M. Teresa Machini, Renato Froidevaux, Natalia J. S. Costa, Robert Wojcieszak, Franck Dumeignil, Erico Teixeira-Neto, Ângela A. Teixeira-Neto, Joëlle Thuriot-Roukos
Přispěvatelé: Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Universidade de São Paulo (USP), Institut Charles Viollette (ICV) - ULR 7394 (ICV), Université d'Artois (UA)-Université du Littoral Côte d'Opale (ULCO)-Institut Supérieur d'Agriculture-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)2014/10824-3 2017/03235-02014/15159-8, Laboratório Nacional de Nanotecnologia, CNPEM, Institute of Chemistry, University of São Paulo, University of São Paulo (USP), Institut Charles Viollette (ICV) - EA 7394 (ICV), Université d'Artois (UA)-Institut National de la Recherche Agronomique (INRA)-Université du Littoral Côte d'Opale (ULCO)-Institut Supérieur d'Agriculture-Université de Lille, Unité de Catalyse et de Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Ecole Centrale de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Universidade de São Paulo = University of São Paulo (USP), Université de Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS], Universidade de São Paulo = University of São Paulo [USP], Institut Charles Viollette (ICV) - EA 7394 [ICV]
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Catalysts, Vol 10, Iss 1, p 75 (2020)
Catalysts
Volume 10
Issue 1
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Catalysts, MDPI, 2020, 10 (1), pp.75. ⟨10.3390/catal10010075⟩
Catalysts, 2020, 10 (1), pp.75. ⟨10.3390/catal10010075⟩
ISSN: 2073-4344
Popis: 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&rsquo
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&ndash
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.
Databáze: OpenAIRE
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