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Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts
The catalytic dehydration of fructose to 5-hydroxymethylfurfural (HMF) in water was performed in the presence of pristine Nb(2)O(5) and composites containing Nb and Ti, Ce or Zr oxides. In all experiments, fructose was converted to HMF using water as the solvent. The catalysts were characterized by...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8308375/ https://www.ncbi.nlm.nih.gov/pubmed/34361205 http://dx.doi.org/10.3390/nano11071821 |
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author | García-López, Elisa I. Pomilla, Francesca Rita Megna, Bartolomeo Testa, Maria Luisa Liotta, Leonarda Francesca Marcì, Giuseppe |
author_facet | García-López, Elisa I. Pomilla, Francesca Rita Megna, Bartolomeo Testa, Maria Luisa Liotta, Leonarda Francesca Marcì, Giuseppe |
author_sort | García-López, Elisa I. |
collection | PubMed |
description | The catalytic dehydration of fructose to 5-hydroxymethylfurfural (HMF) in water was performed in the presence of pristine Nb(2)O(5) and composites containing Nb and Ti, Ce or Zr oxides. In all experiments, fructose was converted to HMF using water as the solvent. The catalysts were characterized by powder X-ray diffraction, scanning electron microscopy, N(2) physical adsorption, infrared and Raman spectroscopy and temperature-programmed desorption of NH(3). Experimental parameters such as fructose initial concentration, volume of the reacting suspension, operation temperature, reaction time and amount of catalyst were tuned in order to optimize the catalytic reaction process. The highest selectivity to HMF was ca. 80% in the presence of 0.5 g·L(−1) of bare Nb(2)O(5), Nb(2)O(5)-TiO(2) or Nb(2)O(5)-CeO(2) with a maximum fructose conversion of ca. 70%. However, the best compromise between high conversion and high selectivity was reached by using 1 g·L(−1) of pristine Nb(2)O(5). Indeed, the best result was obtained in the presence of Nb(2)O(5), with a fructose conversion of 76% and a selectivity to HMF of 75%, corresponding to the highest HMF yield (57%). This result was obtained at a temperature of 165° in an autoclave after three hours of reaction by using 6 mL of 1 M fructose suspension with a catalyst amount equal to 1 g·L(−1). |
format | Online Article Text |
id | pubmed-8308375 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-83083752021-07-25 Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts García-López, Elisa I. Pomilla, Francesca Rita Megna, Bartolomeo Testa, Maria Luisa Liotta, Leonarda Francesca Marcì, Giuseppe Nanomaterials (Basel) Article The catalytic dehydration of fructose to 5-hydroxymethylfurfural (HMF) in water was performed in the presence of pristine Nb(2)O(5) and composites containing Nb and Ti, Ce or Zr oxides. In all experiments, fructose was converted to HMF using water as the solvent. The catalysts were characterized by powder X-ray diffraction, scanning electron microscopy, N(2) physical adsorption, infrared and Raman spectroscopy and temperature-programmed desorption of NH(3). Experimental parameters such as fructose initial concentration, volume of the reacting suspension, operation temperature, reaction time and amount of catalyst were tuned in order to optimize the catalytic reaction process. The highest selectivity to HMF was ca. 80% in the presence of 0.5 g·L(−1) of bare Nb(2)O(5), Nb(2)O(5)-TiO(2) or Nb(2)O(5)-CeO(2) with a maximum fructose conversion of ca. 70%. However, the best compromise between high conversion and high selectivity was reached by using 1 g·L(−1) of pristine Nb(2)O(5). Indeed, the best result was obtained in the presence of Nb(2)O(5), with a fructose conversion of 76% and a selectivity to HMF of 75%, corresponding to the highest HMF yield (57%). This result was obtained at a temperature of 165° in an autoclave after three hours of reaction by using 6 mL of 1 M fructose suspension with a catalyst amount equal to 1 g·L(−1). MDPI 2021-07-13 /pmc/articles/PMC8308375/ /pubmed/34361205 http://dx.doi.org/10.3390/nano11071821 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article García-López, Elisa I. Pomilla, Francesca Rita Megna, Bartolomeo Testa, Maria Luisa Liotta, Leonarda Francesca Marcì, Giuseppe Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts |
title | Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts |
title_full | Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts |
title_fullStr | Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts |
title_full_unstemmed | Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts |
title_short | Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural in Aqueous Medium over Nb(2)O(5)-Based Catalysts |
title_sort | catalytic dehydration of fructose to 5-hydroxymethylfurfural in aqueous medium over nb(2)o(5)-based catalysts |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8308375/ https://www.ncbi.nlm.nih.gov/pubmed/34361205 http://dx.doi.org/10.3390/nano11071821 |
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