Ruthenium on phosphorous-modified alumina as an effective and stable catalyst for catalytic transfer hydrogenation of furfural

Fovanna, Thibault; Campisi, Sebastiano; Villa, Alberto; Kambolis, Anastasios; Peng, Gaël; Rentsch, Daniel; Kröcher, Oliver; Nachtegaal, Maarten; Ferri, Davide

doi:10.1039/d0ra00415d

Cited by 19 publications

(14 citation statements)

References 52 publications

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“…These TPR results are opposed to reports on Pd and Ru were the presence of P resulted in increased electron density and reducibility [24,26]. However, recent studies devoted to investigate poisoning effects also observed a decrease of reducibility in similar Pt-based samples in the presence of P [31,32].…”

Section: Characterisationcontrasting

confidence: 91%

“…The conversion of furfural to acetals and ethers is known to require Brønsted acid sites on the alumina surface [37]. Previous reports on P modified Ru/Al 2 O 3 claim that addition of P generates Brønsted sites on the support [24]. The formation of FA ether in Al 2 O 3 -Pt-2P could hence also be related to an increased support acidity.…”

Section: Furfural Hydrogenationmentioning

confidence: 97%

“…The modification of metal-supported catalysts by strongly adsorbed organic compounds such as phosphorous (P) can also affect their activity and selectivity [22][23][24]. The promoting effect of P in Pd nanoparticles was observed in the liquid-phase hydrogenation of o-chloronitrobenzene, which was attributed to an increased electron density of the Pd(0) clusters in the Pd-P catalyst compared to P-free metallic Pd [23].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, we have reported a promotion of Ru reducibility by P, which was accompanied by the formation of Brønsted acid sites. After reduction, the P-based catalyst was more active for catalytic transfer hydrogenation of furfural and more stable against Ru leaching [24]. The addition of P to transition metal catalysts has also been reported to increase activation energies for C=C and C=O bonds in hydrodeoxygenation (HDO) reactions, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Pt Particle Size and Phosphorous Addition on Furfural Hydrogenation Over Pt/Al2O3

et al. 2021

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Pt/Al2O3 catalysts with different Pt particle sizes and after phosphorous deposition were studied for liquid phase catalysed furfural hydrogenation. The activity and selectivity were related to various physico-chemical properties studied by scanning transmission electron microscopy, N2 physisorption, 31P nuclear magnetic resonance, diffuse reflectance Fourier transform infrared spectroscopy and attenuated total reflectance infrared spectroscopy. The results indicate that the large particles obtained upon calcination of 1 wt% Pt/Al2O3 at 600 °C exhibited higher turnover frequency per surface Pt; nonetheless, the overall activity decreased due to the loss of surface Pt upon sintering. While in certain cases phosphorous can act as promoter, the addition of this element to Pt/Al2O3 resulted in catalyst poisoning, which was ascribed to Pt encapsulation/blockage effects related to formation of AlPO4. Finally, gradual deactivation of Pt/Al2O3 was observed over five consecutive catalytic cycles which was caused by Pt sintering (from 0.6 to 2.0 nm) as well as by irreversible adsorption of organic reaction intermediates. Graphic Abstract

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Section: Characterisationcontrasting

confidence: 91%

Section: Furfural Hydrogenationmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Pt Particle Size and Phosphorous Addition on Furfural Hydrogenation Over Pt/Al2O3

et al. 2021

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“…Ru/Al 2 O 3 was also used in the liquid phase catalytic hydrogenation of FAL in a recent study [63]. These catalysts were modified with phosphorous to improve Ru stability against leaching.…”

Section: Hydrogenationmentioning

confidence: 99%

Common Reactions of Furfural to scalable processes of Residual Biomass

Rodrı́guez¹,

Rache²,

Brijaldo³

et al. 2020

Cienc. En Desarro.

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Energy and the environment will always play key roles in society. The climate emergency cannot be ruled out to enable the transition for a clean energy future. Currently, non-renewable energy resources are declining, therefore is important to continuously explore renewable resources. Biomass is a renewable resource that can be applied to reduce climate changes and to accomplhish emission policies. Cellulose is the most abundant type of biomass worldwide, which can be transformed into biofuels and potential building block platform molecules (e.g furfural) throughout biological or chemical methods. Furfural can be synthetized from cellulose using hydrolysis and dehydration reactions. Furfural has a furan ring and carbonyl functional group which makes it an important intermediary to produce higher value-added molecules at industrial level. These molecules include gasoline, diesel and jet fuel. However, furfural can also be transformed by hydrogenation, oxidation, decarboxylation and condensation reactions. The selective hydrogenation of furfural produces furfuryl alcohol, an important industrial compound, which is widely employed in the production of resins, fibers, and is considered an essential product for pharmaceutical applications. On the other hand, the oxidation of furfural produces furoic acid which is appliedin the agrochemical industry, where it is commonly transformed to furoyl chloride which is finally used in the production of drugs and insecticides. The oxidation and reduction of furfural can carry out through heterogeneous and homogeneous catalysis, and biocatalysis. Selectivity is an important issue in furfural hydrogenation and oxidation reactions since different products can be obtained by using monometallic or bimetallic catalysts and/or different catalyst supports. In biocatalysis approach, different enzymes, complete cells, tools of modern biotechnology, DNA sequencing, regulation of metabolic networks, overexpression of genes that encode enzymes of interest and optimization of the cellular properties of the microorganism are used. Herein, a review on the current status of furfuryl alcohol and furoic acid production from furfural by heterogeneous catalysis and biocatalysis has been studied. The stability, selectivity and activity of catalystsalong with the different furfural oxidation and reduction conditions have been pointed out. Additionally, the main enzymes, microorganisms and mechanism involved in the furfural degradation process have also been discussed.

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Ruthenium Engineered A₂B₂O₆‐Hybrid Columbite Ferrite for Bifunctional pH‐Universal Water Splitting

Bacirhonde

Mohamed

Han

et al. 2023

Advanced Energy Materials

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Single‐atomic catalysts based on ruthenium have a balanced efficiency for water splitting, but it is necessary to control their activity and durability. In this work, a binder‐free Fe2‐xRuxNb2O6 (FRNO) hybrid catalyst is rationally designed through a facile hydrogel‐crosslinking route. The as‐prepared FRNO catalyst exhibits high electrocatalytic activity and stability when operating under acidic (0.5 m H2SO4) and alkaline (1 m KOH) media. Operando X‐ray adsorption and density functional theory calculations show that FRNO/CC, with its high intrinsic conductivity, promotes the adsorption and dissociation of water on its surface by regulating the charge distribution via charge transfer to the coordinated surface oxygen. This facilitates the oxygen evolution reaction (OER) performance by stabilizing *OOH adsorption on Ru and Fe. The FRNO/carbon cloth (CC) hybrid catalyst also delivers excellent activity and stability for both hydrogen evolution reaction (HER) and OER in pH‐universal electrolytes with low overpotentials of 30 mV per 82 mV for HER and 200 mV per 260 mV for OER at a current density of 10 mA cm‐2 in acidic/basic medium. Ultimately, the FRNO/CC hybrid catalyst shows good water‐splitting performance, and it is expected to help contribute to the creation of various hybrid electrocatalysts.

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Ruthenium on phosphorous-modified alumina as an effective and stable catalyst for catalytic transfer hydrogenation of furfural

Abstract: Phosphorous induces structural changes in Ru/Al2O3 that make it more active and more stable for liquid phase hydrogenation of furfural.

Cited by 19 publications

References 52 publications

Effect of Pt Particle Size and Phosphorous Addition on Furfural Hydrogenation Over Pt/Al2O3

Effect of Pt Particle Size and Phosphorous Addition on Furfural Hydrogenation Over Pt/Al2O3

Common Reactions of Furfural to scalable processes of Residual Biomass

Ruthenium Engineered A₂B₂O₆‐Hybrid Columbite Ferrite for Bifunctional pH‐Universal Water Splitting

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Ruthenium on phosphorous-modified alumina as an effective and stable catalyst for catalytic transfer hydrogenation of furfural

Abstract: Phosphorous induces structural changes in Ru/Al2O3 that make it more active and more stable for liquid phase hydrogenation of furfural.

Cited by 19 publications

References 52 publications

Effect of Pt Particle Size and Phosphorous Addition on Furfural Hydrogenation Over Pt/Al2O3

Effect of Pt Particle Size and Phosphorous Addition on Furfural Hydrogenation Over Pt/Al2O3

Common Reactions of Furfural to scalable processes of Residual Biomass

Ruthenium Engineered A2B2O6‐Hybrid Columbite Ferrite for Bifunctional pH‐Universal Water Splitting

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Ruthenium Engineered A₂B₂O₆‐Hybrid Columbite Ferrite for Bifunctional pH‐Universal Water Splitting