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5-Hydroxymethylfurfural and Furfural Base-Free Oxidation over AuPd Embedded Bimetallic Nanoparticles
- Source :
- 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⟩
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- 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<br />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<br />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.
- Subjects :
- Nanoparticle
02 engineering and technology
010402 general chemistry
Furfural
lcsh:Chemical technology
01 natural sciences
7. Clean energy
Catalysis
Metal
lcsh:Chemistry
chemistry.chemical_compound
base-free
[CHIM]Chemical Sciences
lcsh:TP1-1185
Partial oxidation
Physical and Theoretical Chemistry
Bimetallic strip
ComputingMilieux_MISCELLANEOUS
bimetallic nanoparticles
biomass
Chemistry
green oxidation
[CHIM.MATE]Chemical Sciences/Material chemistry
[CHIM.CATA]Chemical Sciences/Catalysis
021001 nanoscience & nanotechnology
0104 chemical sciences
3. Good health
embedded catalysts
Chemical engineering
lcsh:QD1-999
visual_art
visual_art.visual_art_medium
Leaching (metallurgy)
0210 nano-technology
Selectivity
BIOMASSA
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 10
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Catalysts
- Accession number :
- edsair.doi.dedup.....cd55de5558f5d668e98ee4440300d6aa