Glycerol Electro-Oxidation in Alkaline Media and Alkaline Direct Glycerol Fuel Cells

Antolini, Ermete

doi:10.3390/catal9120980

Cited by 72 publications

(73 citation statements)

References 148 publications

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“…However, the purification of glycerol from its crude form, which contains methanol and other salt impurities, [ 75 ] should be performed by vacuum distillation or ion exchange processes, bringing forth a rather high cost and complex. Given that the price of crude glycerol is around 80% of pure glycerol, [ 76 ] the overall cost of the corresponding technology will be lowered if a reliable electrochemical technique can be accessible for conversion the crude glycerol. Hence, the research effort on the utilization of crude glycerol as starting material is also promising to commercialize this process.…”

Section: Conclusion and Future Research Outlooksmentioning

confidence: 99%

Recent Progress in Electrocatalytic Glycerol Oxidation

et al. 2020

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Glycerol, as the major by‐product of biodiesel, can be oxidized into diverse value‐added chemical products via either traditional chemical methods or electrochemical routes. Electrocatalytic glycerol oxidation reaction (GOR) driven by renewable‐derived electricity (e.g., wind and solar) is a promising pathway for fine chemicals production. In an electrochemical cell, GOR can be coupled with various cathodic reactions, including hydrogen evolution reaction (HER), CO2 reduction reaction (CO2RR), and oxygen reduction reaction (ORR); in this manner, different benefits of either energy effectiveness or additional value‐added products can be obtained depending on the cathode reduction reaction selected. Comprehensively understanding of electrocatalytic GOR and the associated processes is of great significance to promote its industrial application. Herein, recent progress of GOR is focused on. The background of biomass‐derived glycerol valorization to energy and value‐added chemicals as well as the electrochemical conversion techniques via GOR is introduced. Then, the electrocatalytic reaction pathways, the potential application of GOR, and the measurement method for products are also discussed and summarized. Special emphasis is put on the design and the development of high‐selectivity and high‐activity electrocatalysts for GOR. Finally, the challenges and the future prospects in the fields of GOR are highlighted.

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Section: Conclusion and Future Research Outlooksmentioning

confidence: 99%

Recent Progress in Electrocatalytic Glycerol Oxidation

et al. 2020

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“…[1] Dihydroxyacetone (DHA), mesoxalic acid and tartronic acid are also possible glycerol oxidation products which find application in cosmetics [2] or are of medicinal and industrial value. [3] However, it is rather difficult to selectively form such partially oxidised products as large amounts of formic acid are easily obtained from multiple pathways featuring CÀ C bond cleavage or, in an even more unfavourable case, the oxidation is directly leading to the formation of CO 2 . [4] Materials based on noble metals such as Pt, [5,6] Au [6,7] or Pd [8] and corresponding bimetallic alloys [9,10] have been proposed as catalysts for the glycerol oxidation reaction (GOR), often in acidic media.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Oxidation of Glycerol Using Solid‐State Synthesised Nickel Boride: Impact of Key Electrolysis Parameters on Product Selectivity

et al. 2021

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Water electrolysis is a promising technology for sustainable hydrogen production; however, its commercialisation is limited by sluggish kinetics of the oxygen evolution reaction (OER). A potential alternative to the OER is hence required and is seen in the electrocatalytic glycerol oxidation reaction (GOR) as it offers concomitant value-added product generation from a cheap and abundant feedstock. Here, we show a facile solid-state synthesis method to obtain Ni-boride, a non-noble metal-based catalyst subsequently used in an in-depth study of the GOR product distribution as a function of key electrolysis parameters. Highly crystalline, mixed-phase Ni borides were obtained, and their synthesis was successfully optimised regarding GOR activity. Long-term chronoamperometry was conducted in a circular flow-through cell and samples were analysed by HPLC. It is shown that the formation of lactic acid, one of the most valuable GOR products, can be enhanced by optimising the electrolyte composition and the applied potential.

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“…6 The low price, highly active triol structure, high volumetric energy density, simple storage, environment-friendly properties of glycerol with energy, and high-value chemical conversion capability are evidence of a promising fuel source for DAFCs. 7 The high-value products can be formed through glycerol electrooxidation over specific catalysts and conditions (Scheme 1). 8 These products formed based on the type of catalyst used; for example, modified Pt-based catalyst with adatoms helps redirect the electrooxidation pathway toward dihydroxyacetone (DHA), tartronate, and mesoxalate production.…”

Section: Introductionmentioning

confidence: 99%

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

2021

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Direct glycerol fuel cell (DGFCs) is an interesting type of fuel cell that can produce energy and high-end chemicals using excess and less expensive fuel, glycerol. The commercialization of DGFCs meets with many challenges, especially on its catalyst development. Common catalysts usually tested in DGFCs are platinum-based (Pt) and palladium-based catalyst (Pd). The expensive value of the noble metal such as Pt and Pd becomes a limitation towards the commercialization. This review shows and summarizes numerous improvements achieved on the anode catalyst for GOR to reduce the noble metal dependency while maximizing the activity performance, durability-stability, and GOR yield selectivity on certain valuable chemicals introducing multiple optimized syntheses methods with timesaving and cost-effective benefits. Finally, this review proposes the next direction of catalyst development to be taken in the future based on the recent developments and innovations implemented and tested.

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Glycerol Electro-Oxidation in Alkaline Media and Alkaline Direct Glycerol Fuel Cells

Cited by 72 publications

References 148 publications

Recent Progress in Electrocatalytic Glycerol Oxidation

Recent Progress in Electrocatalytic Glycerol Oxidation

Electrocatalytic Oxidation of Glycerol Using Solid‐State Synthesised Nickel Boride: Impact of Key Electrolysis Parameters on Product Selectivity

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

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