Heterogeneous catalysts based on vanadyl phosphate for fructose dehydration to 5-hydroxymethyl-2-furaldehyde

Carlini, Carlo; Patrono, P.; Galletti, Anna Maria Raspolli; Sbrana, Glauco

doi:10.1016/j.apcata.2004.07.026

Cited by 162 publications

(94 citation statements)

References 37 publications

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“…The low selectivity to HMF might be attributed again to the leaching of phosphate groups, as confirmed by the hot filtration test. According to the literature, phosphate groups eventually dissolved in the solution would act as homogenous catalysts promoting several secondary reactions and the subsequent transformation of HMF into by-products [36,[40][41][42][43]. This hypothesis was supported by the results obtained by performing the reaction under the same conditions using phosphoric acid as the homogeneous catalyst (see Table 1).…”

Section: Samplesupporting

confidence: 75%

“…The selective dehydration of fructose to HMF is an acid-catalyzed reaction. Brønsted acid sites and, in particular, phosphate groups are known to be active catalysts for this reaction [34][35][36][37]. Actually, correlating the final conversion after 12 h and the P concentration on the surface, as determined by XPS, a clear correlation between activity and amount of P groups (Figure 7) appears.…”

Section: Discussionmentioning

confidence: 88%

“…Indeed, the co-presence of HNO 3 results in the introduction of O-functionalities on the surface, acting as preferential anchoring sites for phosphate groups [31]. As known from the literature, P-containing materials are effective catalysts in the selective dehydration of fructose to 5-hydroxymethylfurfural (HMF) in water [34][35][36][37][38]. Indeed, grafting P groups on the surface allowed to tune the surface acidity and resulted in more selective catalysts compared to other solid acid catalysts [37].…”

Section: Introductionmentioning

confidence: 96%

“…Despite the high activity, a low selectivity to HMF was obtained for P-HHT (46% after 12 h), probably due to the consecutive transformation of HMF to side-products. It is known that the presence of secondary reactions, such as the formation of formic and levulinic acids or humins, is promoted by the strong acidity typical of homogenous acid catalysts [36,[40][41][42][43]. When 0.1 M phosphoric acid solution (pH ≈ 2) is used as a homogeneous catalyst, fructose is almost completely converted after three hours (conv.…”

Section: Catalytic Fructose Dehydrationmentioning

confidence: 99%

See 3 more Smart Citations

Controlling the Incorporation of Phosphorus Functionalities on Carbon Nanofibers: Effects on the Catalytic Performance of Fructose Dehydration

Campisi

Trujillo

Motta

et al. 2018

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Phosphorylated carbons have been reported to be effective catalysts in dehydration reactions for biomass valorization. The amount and the nature of P groups are a key parameter affecting the catalytic performances of functionalized materials. Herein, we investigate the role of structural and surface properties of carbon-based materials, specifically carbon nanofibers, in determining the amount of P-functionalities. In order to incorporate P groups on carbon surfaces, various carbon nanofibers (CNFs) with different graphitization degrees have been functionalized through treatment with a H 3 PO 4 -HNO 3 mixture at 150 • C. The pristine materials, as well as the functionalization protocol, were properly selected to achieve an effective functionalization without drastically altering the morphology of the samples. Surface and structural properties of the synthesized functionalized materials have been investigated by means of transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The catalytic behavior of phosphorylated carbon nanofibers has been evaluated in the selective dehydration of fructose to hydroxymethylfurfural (HMF) to elucidate structure-activity relationships.

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Section: Samplesupporting

confidence: 75%

Section: Discussionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 96%

Section: Catalytic Fructose Dehydrationmentioning

confidence: 99%

See 2 more Smart Citations

Controlling the Incorporation of Phosphorus Functionalities on Carbon Nanofibers: Effects on the Catalytic Performance of Fructose Dehydration

Campisi

Trujillo

Motta

et al. 2018

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“…15 Essas são as principais razões para a baixa seletividade encontrada para 5-HMF em sistemas aquosos ácidos. 27 No caso da glicose, sais de metais e óxidos foram aplicados como catalisadores para viabilizar a isomerização e subsequente desidratação em água, entretanto, baixos rendimentos são obtidos para 5-HMF. Um dos melhores resultados descritos na literatura emprega AlCl 3 (50 mol%) como catalisador a 120°C em micro-ondas por 20 min, alcançando um rendimento de 40% para 5-HMF a partir da glicose.…”

Section: Produção De 5-hmf a Partir De Recursos Renováveisunclassified

Production of 5-(Hydroxymethyl)furfural from Biomass: Synthetic Challenges and Applications as Building Block in Polymers and Liquid Fuel Production

Pastre

2017

Rev. Virtual Quim.

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Abstract:The production of compounds known as building blocks from renewable resources has aroused much interest from the scientific community in the recent years. Building blocks are molecules that exhibit in most cases multiple functional groups and offer unique possibilities to be chemically or biologically transformed into high added-value compounds. Some examples of these include biopolymers, biofuels, solvents, and biochemicals. Among the examples of building blocks, 5-(hydroxymethyl)furfural (5-HMF) is presented as one of the most studied compound in recent years due to its potential as raw material for preparation of bio-based chemicals. In this context, in the proposed review, the recent synthetic methodologies for 5-HMF production from renewable resources will be presented, as well as the application of 5-HMF as raw material for liquid biofuels and biopolymers production.Keywords: 5-(Hydroxymethyl)furfural; Bio-polymers; Bio-fuels; Green chemistry. ResumoA produção de compostos conhecidos como blocos de construção a partir de recursos renováveis tem despertado muito interesse da comunidade científica nos últimos anos. Blocos de construção são moléculas que apresentam, na grande maioria das vezes, múltiplos grupos funcionais e oferecem excelentes oportunidades para serem quimicamente ou biologicamente transformadas em compostos com alto valor agregado. Alguns exemplos de compostos com alto valor agregado incluem bio-polímeros, bio-combustíveis, bio-solventes e os compostos de química de base. Entre os exemplos que podemos citar como blocos construtores, o 5-(hidroximetil)furfural (5-HMF) apresenta-se como um dos mais estudados nos últimos anos devido ao seu potencial como matéria-prima para preparação de insumos químicos. Nesse contexto, este artigo de revisão tem por objetivo apresentar as recentes metodologias sintéticas para preparação de 5-HMF a partir de recursos renováveis, bem como a aplicação de 5-HMF na produção de biocombustíveis líquidos e biopolímeros.

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Conversion of sugarcane carbohydrates into platform chemicals

Rackemann

Zhang

Doherty

2016

Sugarcane‐Based Biofuels and Bioproducts

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Heterogeneous catalysts based on vanadyl phosphate for fructose dehydration to 5-hydroxymethyl-2-furaldehyde

Cited by 162 publications

References 37 publications

Controlling the Incorporation of Phosphorus Functionalities on Carbon Nanofibers: Effects on the Catalytic Performance of Fructose Dehydration

Controlling the Incorporation of Phosphorus Functionalities on Carbon Nanofibers: Effects on the Catalytic Performance of Fructose Dehydration

Production of 5-(Hydroxymethyl)furfural from Biomass: Synthetic Challenges and Applications as Building Block in Polymers and Liquid Fuel Production

Conversion of sugarcane carbohydrates into platform chemicals

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