Journal
MATERIALS
Volume 7, Issue 1, Pages 527-541Publisher
MDPI
DOI: 10.3390/ma7010527
Keywords
furfural; bimetallic; Pt-Fe; desorption; impregnation; gamma-Al2O3
Categories
Funding
- Facultad de Ciencias Quimicas
- UANL
- CONACYT [167729]
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In this work, the desorption of furfural, which is a competitive intermediate during the production of biofuel and valuable aromatic compounds, was studied using pure alumina, as well as alumina impregnated with iron and platinum oxides both individually and in combination, using thermogravimetric analysis (TGA). The bimetallic sample exhibited the lowest desorption percentage for furfural. High-resolution transmission electron microscopy (HRTEM) imaging revealed the intimate connection between the iron and platinum oxide species on the alumina support. The mechanism of furfural desorption from the Pt-Fe/Al2O3 0.5%-0.5% sample was determined using physisorbed furfural instead of chemisorbed furfural; this mechanism involved the oxidation of the C=O group on furfural by the catalyst. The oxide nanoparticles on gamma-Al2O3 support helped to stabilize the furfural molecule on the surface.
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