Supported Pd–Au bimetallic nanoparticles as an efficient catalyst for the hydrodeoxygenation of vanillin with formic acid at room temperature

Wu, Peng-yu; Zhao, Danxia; Lu, Guo‐ping; Cai, Chun

doi:10.1039/d1gc04240h

Cited by 24 publications

(6 citation statements)

References 53 publications

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“…The synergistic effect between Ru−Pt and the high-valence Pt facilitated the adsorption and activation of methane, which made the catalyst exhibit higher activity and stability. Wu 23 et al have developed a loaded PdAu/g-C 3 N 4 catalyst. Due to the electronic effect between Pd−Au and the metal−support interaction, this catalyst exhibited good catalytic activity and stability in catalyzing the hydrodeoxygenation reaction of vanillin to formic acid at room temperature.…”

Section: ■ Introductionmentioning

confidence: 99%

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MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Yu,

Ke,

Wang

et al. 2024

Chem. Mater.

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The specific structure of the support and the interactions between the catalyst components can lead to electron transfer, which in turn could affect the catalytic performance in heterogeneous catalytic reactions. In this paper, we have successfully prepared Mn x O y C z composite materials from the calcination of the Mn-organic framework. Then bimetallic Au−Pt nanoparticles (NPs) were supported onto Mn x O y C z via the colloidal-deposition method. These catalysts were tested in the selective oxidation of glycerol to glyceric acid under basic conditions. The results demonstrated that the catalytic activity of the bimetallic Au−Pt/ Mn x O y C z catalyst is considerably superior to those of the monometallic (Au and Pt) supported catalysts. Under the optimized conditions, 100% of glycerol can convert with 57.3% selectivity of glyceric acid. Multicharacterizations showed that the strong interaction between Au and Pt in the Au−Pt/Mn x O y C z catalyst can enhance the dispersion of Au−Pt alloy NPs, promoting the electronic coupling effect on the metal surface. At the same time, the rich oxygen vacancies in this catalyst can facilitate the activation of oxygen, which causes the Au−Pt/Mn x O y C z catalyst to show better catalytic activity. Specifically, the interaction between Au and Pt not only decreases the particle size of the Au−Pt alloy NPs but also promotes the reduction of Mn-based oxides and the mobility of oxygen. The absence of Au leads to a decrease in Pt 4f 7/2 binding energy, resulting in an enrichment of electrons at the Pt active site and enhancing the oxidation ability of the primary hydroxyl group. In addition, the Au−Pt/Mn x O y C z catalyst showed excellent stability without substantial loss of activity after being recycled five times. The insights and methodology may provide some new guidance for the reasonable design of bimetallic catalysts for the catalytic oxidation of biopolyols under mild conditions.

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Section: ■ Introductionmentioning

confidence: 99%

“…The synergistic effect between Ru–Pt and the high-valence Pt facilitated the adsorption and activation of methane, which made the catalyst exhibit higher activity and stability. Wu et al. have developed a loaded PdAu/g-C 3 N 4 catalyst.…”

Section: Introductionmentioning

confidence: 99%

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Yu,

Ke,

Wang

et al. 2024

Chem. Mater.

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“…[ 4 ] Such oxygenates are of low value owing to their instability and low calorific values. [ 5 , 6 ] To obtain high‐value chemicals and fuels, bio‐oils must undergo further treatment, such as hydrogenation or hydrodeoxygenation (HDO), which are effective methods for reducing the oxygen content and promoting conversion into more stable alcohols and hydrocarbons. [ 7 , 8 , 9 ]…”

Section: Introductionmentioning

confidence: 99%

Toward High‐Performance Hydrogenation at Room Temperature Through Tailoring Nickel Catalysts Stable in Aqueous Solution

Zou,

Shen,

Zhang

et al. 2024

Advanced Science

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The development of highly active, reusable catalysts for aqueous‐phase reactions is challenging. Herein, metallic nickel is encapsulated in a nitrogen‐doped carbon–silica composite (SiO2@Ni@NC) as a catalyst for the selective hydrogenation of vanillin in aqueous media. The constructed catalyst achieved 99.8% vanillin conversion and 100% 4‐hydroxymethyl‐2‐methoxyphenol selectivity at room temperature. Based on combined scanning transmission electron microscopy, X‐ray photoelectron spectroscopy, and Raman analyses, the satisfactory catalytic performance is attributed to the composite structure consisting of an active metal, carbon, and silica. The hydrophilic silica core promoted dispersion of the catalyst in aqueous media. Moreover, the external hydrophobic NC layer has multiple functions, including preventing oxidation or leaching of the internal metal, acting as a reducing agent to reduce the internal metal, regulating the active‐site microenvironment by enriching the concentrations of H2 and organic reactants, and modifying the electronic structure of the active metal via metal–support interactions. Density functional theory calculations indicated that NC facilitates vanillin adsorption and hydrogen dissociation to promote aqueous‐phase hydrogenation. This study provides an efficient strategy for constructing encapsulated Ni‐based amphiphilic catalysts to upgrade biomass‐derived compounds.

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“…So far, various transition metal catalysts such as Pd, Co, , Cu, , and Ni , have been widely employed for efficient hydrogenation of vanillin to produce MMP. For example, Cai and his co-workers prepared g-C 3 N 4 -supported Pd–Au bimetallic catalysts for the HDO of vanillin and achieved 100% MMP yield at room temperature . Zhang et al reported that the catalyst Co/N-C-600 exhibited a vanillin conversion of 99% and MMP yield of 98.6% at 150 °C and 20 bar H 2 pressure for 10 h .…”

Section: Introductionmentioning

confidence: 99%

“…For example, Cai and his co-workers prepared g-C 3 N 4 -supported Pd−Au bimetallic catalysts for the HDO of vanillin and achieved 100% MMP yield at room temperature. 18 Zhang et al reported that the catalyst Co/N-C-600 exhibited a vanillin conversion of 99% and MMP yield of 98.6% at 150 °C and 20 bar H 2 pressure for 10 h. 16 Li et al synthesized a Nisupported ZrP catalyst for obtaining 97.25% vanillin conversion with a MMP yield of 88.39% under the conditions of 220 °C and 0.5 MPa H 2 for 0.5 h. 19 However, the intermediate HMP is also an important raw chemical for the synthesis of many functional materials such as renewable epoxy thermosets, polymers, and medicines. 20−24 The abovementioned progresses show that most of the reported catalysts are based on MMP as the terminal product instead of the intermediate HMP.…”

Section: ■ Introductionmentioning

confidence: 99%

Solvent-Controlled Product Distribution in Vanillin Hydrogenation over a N-Doped Carbon-Supported Nickel Catalyst

Luo

Sun

Tang

et al. 2023

Ind. Eng. Chem. Res.

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Solvent-controlled hydrogenation of vanillin to 4-hydroxymethyl-2-methoxyphenol (HMP) or 2-methoxy-4-methylphenol (MMP) is an attractive topic in the field of bio-oil utilization. Herein, a nickel-based catalyst supported on a N-doped carbon material (Ni-N-C) was prepared by facile ball milling mixing and subsequent high-temperature calcination. The as-prepared Ni-N-C800 catalyst showed more than 99% MMP yield and good stability using pure H2O as a solvent under the given conditions. By using the mixed solvent H2O/ethyl acetate with a volume ratio of 1:5, the hydrogenation was conveniently tuned to produce the intermediate product HMP. Density functional theory (DFT) calculations further showed that the intermolecular forces of HMP interacting with ethyl acetate were much stronger than those interacting with H2O. Ethyl acetate could raise the energy barrier to keep vanillin hydrogenation in the intermediate HMP stage, and H2O reduced the energy barrier to accelerate the final product MMP formation.

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Supported Pd–Au bimetallic nanoparticles as an efficient catalyst for the hydrodeoxygenation of vanillin with formic acid at room temperature

Abstract: Hydrodeoxygenation (HDO) upgrade of biomass usually need high temperature or high pressure of H2. Herein, a g-C3N4 supported PdAu bimetallic nanoparticles was reported as the efficient catalyst for the HDO...

Cited by 24 publications

References 53 publications

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Toward High‐Performance Hydrogenation at Room Temperature Through Tailoring Nickel Catalysts Stable in Aqueous Solution

Solvent-Controlled Product Distribution in Vanillin Hydrogenation over a N-Doped Carbon-Supported Nickel Catalyst

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Supported Pd–Au bimetallic nanoparticles as an efficient catalyst for the hydrodeoxygenation of vanillin with formic acid at room temperature

Abstract: Hydrodeoxygenation (HDO) upgrade of biomass usually need high temperature or high pressure of H2. Herein, a g-C3N4 supported PdAu bimetallic nanoparticles was reported as the efficient catalyst for the HDO...

Cited by 24 publications

References 53 publications

MOFs-Derived MnxOyCz Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

MOFs-Derived MnxOyCz Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Toward High‐Performance Hydrogenation at Room Temperature Through Tailoring Nickel Catalysts Stable in Aqueous Solution

Solvent-Controlled Product Distribution in Vanillin Hydrogenation over a N-Doped Carbon-Supported Nickel Catalyst

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Product

Resources

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MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid