Electrochemical investigations of the oxidation–reduction of furfural in aqueous medium

Parpot, Píer; Bettencourt, Ana Paula; Chamoulaud, Gwenaël; Kokoh, K. Boniface; Belgsir, E.M.

doi:10.1016/j.electacta.2003.08.021

Cited by 127 publications

(125 citation statements)

References 4 publications

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“…Furfural is at an intermediate oxidation state between the corresponding alcohol and acid. Therefore, it can be reduced into furfurylic alcohol or oxidized into furoic acid (Parpot et al, 2004) as in Scheme 1. The change in natural pH of furfural solution, therefore, changes the structure of furfural and, hence, destabilizes the solution.…”

Section: Resultsmentioning

confidence: 99%

Studies on the Adsorption of Furfural From Aqueous Solution Onto Low-Cost Bagasse Fly Ash

Sahu

Mall

Srivastava

2007

Chemical Engineering Communications

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The present study deals with the sorptive removal of furfural from aqueous solution by carbon-rich bagasse fly ash (BFA). Batch studies were performed to evaluate the influence of various experimental parameters, namely, initial pH (pH 0 ), adsorbent dose, contact time, initial concentration, and temperature on the removal of furfural. Optimum conditions for furfural removal were found to be pH 0 % 5.5, adsorbent dose % 4 g=L of solution, and equilibrium time % 4 h. The adsorption followed pseudo-second-order kinetics. The effective diffusion coefficient of furfural is of the order of 10 À13 m 2 =s. Equilibrium adsorption data on BFA was analyzed by Freundlich, Langmuir, Dubnin-Radushkevich, Redlich-Peterson, and Temkin isotherm equations using regression and error analysis. The Redlich-Peterson isotherm was found to best represent the data for furfural adsorption onto BFA. Adsorption of furfural on BFA is favorably influenced by a decrease in the temperature of the operation. Values of the change in entropy (DS 0 ) and heat of adsorption (DH 0 ) for furfural adsorption on BFA were negative. The high negative value of change in Gibbs free energy (DG 0 ) indicates the feasible and spontaneous adsorption of furfural on BFA.

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Section: Resultsmentioning

confidence: 99%

Studies on the Adsorption of Furfural From Aqueous Solution Onto Low-Cost Bagasse Fly Ash

Sahu

Mall

Srivastava

2007

Chemical Engineering Communications

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“…Furfural oxidation in aqueous medium on noble (Au and Pt) and non-noble (Pb, Cu, and Ni) metal electrodes showed that the rate of furfural oxidation was controlled by diffusion on Pt and Ni anodes. A yield of 80 % furoic acid was obtained on Ni anodes in a strong alkaline medium of 0.5 M NaOH [ 70 ]. Vapor-phase oxidation of furfural over V 2 O 5 catalyst was studied using an isothermal fl ow reactor in the temperature range of 220-280 °C with maleic anhydride, carbon dioxide, and water as the products by a parallel reaction scheme (Fig.…”

Section: Selective Oxidation Of Furfuralmentioning

confidence: 99%

Catalytic Oxidation Pathways for the Production of Carboxylic Acids from Biomass

Yang

et al. 2016

Green Chemistry and Sustainable Technology

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The transition from a fossil chemical industry to a renewable chemical industry depends on breakthroughs in the research and development on the most promising alternatives. Biomass is such a class of renewable raw carbon materials for the production of fuels and chemicals, with growing interest among researchers aiming to achieve global sustainability. Catalytic oxidation of biomass can lead to multiple products, and the challenge is to direct the reaction pathways to the desired products. Organic acids are among the listed "platform molecules," which have the potential to be further converted into high-value-added chemicals. In this chapter, various pathways are reviewed for catalytic oxidation of a variety of biomass to produce value-added organic acids.

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“…Many researchers have studied the electroreduction of carbonyl compounds to monomeric and dimeric products using acetophenone and furfural as model molecules. The selectivity of electroreduction of acetophenone to the monomeric product 1-phenylethanol and the dimeric product 2,3-diphenyl-2,3-butanediol in aqueous media have been much studied [1][2][3][4][5][6][7] with interesting results. Likewise, in the presence of cyclodextrins, the dimeric product of electroreduction of acetophenone has also been obtained selectively [8][9][10].…”

Section: Introductionmentioning

confidence: 98%

Electrosynthesis of 2,3-dimethyltartaric acid from pyruvic acid in acid medium

et al. 2006

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This study reports the electrohydrodimerization of pyruvic acid to 2,3-dimethyltartaric acid in sulphuric acid medium (0.5 M H 2 SO 4 ) on a lead cathode. The main products detected were lactic acid and 2,3-dimethyltartaric acid. The selectivity towards the formation of 2,3-dimethyltartaric acid was studied vs. pyruvic acid concentration in sulphuric acid solution, at )1.1 V vs. MSE. The best selectivity of 2,3-dimethyltartaric acid reached 69% for an initial concentration of 1.7 M pyruvic acid. The yield of pyruvic acid was 84%.

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Electrochemical investigations of the oxidation–reduction of furfural in aqueous medium

Cited by 127 publications

References 4 publications

Studies on the Adsorption of Furfural From Aqueous Solution Onto Low-Cost Bagasse Fly Ash

Studies on the Adsorption of Furfural From Aqueous Solution Onto Low-Cost Bagasse Fly Ash

Catalytic Oxidation Pathways for the Production of Carboxylic Acids from Biomass

Electrosynthesis of 2,3-dimethyltartaric acid from pyruvic acid in acid medium

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