Electro-oxidation of meso-erythritol on platinum in acid medium: analysis of the reaction products

Cherqaoui, A.; Takky, Driss; Kokoh, K. Boniface; Hahn, F.; Belgsir, E.M.; Léger, J.-M.; Lamy, C.

doi:10.1016/s0022-0728(99)00006-6

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…It is generally assumed that Pt(110) is the most representative surface for polycrystalline Pt (Pt p ; among the Pt basal planes). Consequently, this surface has shown a rather similar behavior to Pt p for the electrooxidation of GlOH. , Besides, it has been observed that several polyols (including GlOH and erythritol) are preferentially oxidized at their primary carbon on Pt p . , Extending this to other polyols, we expect that Pt p will oxidize them to their corresponding carboxylic acid. Secondary alcohol oxidation requires the presence of (111) terrace sites, or the addition of promotors, which favorably interact with enediol intermediate. ,,, …”

Section: Discussionmentioning

confidence: 71%

“…42,43 Besides, it has been observed that several polyols (including GlOH and erythritol) are preferentially oxidized at their primary carbon on Pt p . 7,44 Extending this to other polyols, we expect that Pt p will oxidize them to their corresponding carboxylic acid. Secondary alcohol oxidation requires the presence of (111) terrace sites, or the addition of promotors, which favorably interact with enediol intermediate.…”

Section: ■ Discussionmentioning

confidence: 99%

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Electrooxidation of C₄ Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study

et al. 2020

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Many polyols are abundant and cheap molecules highly spread in the biomass. These molecules have an enormous potential to be used in electrochemical devices to generate energy and/or value-added molecules. The electrooxidation of polyols can produce different substances of interest in the chemical industry concomitantly to high purity hydrogen in electrolyzers. The cost in the production of all these chemicals depends, among other factors, on the develop of more active and selective catalysts. However, in order to search for these materials using computational experiments, it is mandatory to have a better understanding of the fundamental aspect of the reactions, which permit to base the search on the adsorption energies of one or more key reaction intermediates. To contribute to this task, we performed (spectro)electrochemical and computational experiments to study the electrooxidation of C 4 polyols. We show that the electrooxidation of polyols does not depend on the relative orientation of their OH groups. Besides, using Pt single crystals, we demonstrate that the trend for the oxidation of the primary carbon (relative to the secondary) increases in the order Pt(111) < Pt(100) < Pt(110) and that this result can be extended to polyols with longer carbon chains. Finally, computational experiments permit us to rationalize these trends looking at the relative stability of double dehydrogenated intermediates on the Pt basal planes.

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Section: Discussionmentioning

confidence: 71%

Section: ■ Discussionmentioning

confidence: 99%

Electrooxidation of C₄ Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study

et al. 2020

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“…To oxidize carbohydrates, polycrystalline platinum sites are too active and in most cases lead to a dissociative adsorption. This oxidation process, which breaks some carbon-carbon bonds can be avoided by modifying the superficial structure of the Pt electrode using underpotentially deposited metallic adatoms [2,10]. These transition metals have no electrocatalytic effect when, under the same conditions of potential, they are used alone to carry out a selective transformation of sugars such as glucose.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic oxidation of monosaccharides on platinum electrodes modified by thallium adatoms in carbonate buffered medium

et al. 2005

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The effect of modification of polycrystalline platinum by Tl adatoms on the electrocatalytic properties of the electrodes towards the oxidation of monosaccharides was investigated. Significant electrocatalytic effect towards glucose and methylglucoside oxidation was observed on Pt-Tl electrodes as displayed by an enhancement of the oxidation current densities. Different carboxylic acids produced by the electrolysis of carbohydrates were analyzed by ionic chromatography. The electrooxidation of glucose on Pt-Tl gave gluconic and keto-gluconic acids, successively. When the anomeric carbon is protected (methylglucoside), the first oxidation step of the monosaccharide was carried out on the primary alcohol following the same path as that of methanol oxidation.

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“…Bei dieser Reaktion können jedoch auch andere bizyklische Dioxanderivate entstehen. Durch Elektrooxidation an Platin in sauerem Milieu ist die Herstellung von Erythrulose, Erythrose und Erythrinsäure aus Erythrit möglich (Abbildung 3-10) [99]. Erythritsäure ist zudem ohne die Bildung von Nebenprodukten durch eine Oxidation an Ru 3+ -Katalysatoren durch N-Bromoacetamid zugänglich [100].…”

Section: Erythrit In Der Chemischen Und Pharmazeutischen Industrieunclassified

Verfahrensentwicklung zur mikrobiellen Herstellung von Erythrit

Bippes¹,

Willke²,

Vorlop³

2009

Chemie Ingenieur Technik

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Abbildung 6-8 Einfluss des Saccharosepreises auf die Herstellkosten von Erythrit Abbildung 6-9 Einfluss des Hefeextraktpreises auf die Herstellkosten von Erythrit Abbildung 6-10 Einfluss des Kaliumdihydrogenphosphatpreises auf die Herstellkosten von Erythrit Abbildung 6-11 Einfluss des Dampfpreises auf die Herstellkosten von Erythrit Abbildung 6-12 Einfluss des Stompreises auf die Herstellkosten von Erythrit

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Electro-oxidation of meso-erythritol on platinum in acid medium: analysis of the reaction products

Cited by 9 publications

References 15 publications

Electrooxidation of C₄ Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study

Electrooxidation of C₄ Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study

Electrocatalytic oxidation of monosaccharides on platinum electrodes modified by thallium adatoms in carbonate buffered medium

Verfahrensentwicklung zur mikrobiellen Herstellung von Erythrit

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Electro-oxidation of meso-erythritol on platinum in acid medium: analysis of the reaction products

Cited by 9 publications

References 15 publications

Electrooxidation of C4 Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study

Electrooxidation of C4 Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study

Electrocatalytic oxidation of monosaccharides on platinum electrodes modified by thallium adatoms in carbonate buffered medium

Verfahrensentwicklung zur mikrobiellen Herstellung von Erythrit

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Electrooxidation of C₄ Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study

Electrooxidation of C₄ Polyols on Platinum Single-Crystals: A Computational and Electrochemical Study