(Digital) Oxygen Reduction Reaction on Waste Tire Derived Carbon Material and Synthesized Non-Platinum Group Metal Catalysts in Alkaline Solution

Laanemäe, Joel; Jäger, Rutha; Teppor, Patrick; Volobujeva, Olga; Lust, Enn

doi:10.1149/10807.0039ecst

Cited by 3 publications

(3 citation statements)

References 19 publications

(31 reference statements)

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“…The carbon was then ball-milled (FRITSCH Pulverisette 6) with zirconia balls (d = 20 mm). More details about the carbonization method and the characteristics of carbon have been detailed in a previous paper (13).…”

Section: Catalyst Synthesismentioning

confidence: 99%

“…According to the N sorption analysis data (Figure 3), all materials exhibit a moderate specific surface area (S BET = 77-194 g m -2 ) (TABLE III). Carbons synthesized from waste tires (13,16) generally have a lower specific surface area and porosity than, for example, carbide or peat derived carbon NPGM catalysts (6,7). High micro-and mesoporosity is desired in such NPGM materials, since they provide better oxygen mass transport and thus an increase in ORR activity (9,19).…”

Section: Physical Characterizationmentioning

confidence: 99%

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Waste Tire Derived Carbon Support for Non-Platinum-Group Metal Catalyst Materials for Oxygen Reduction Reaction in Alkaline Medium

Laanemäe¹,

Jäger²,

Teppor³

et al. 2023

ECS Trans.

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A porous carbon material was synthesized using waste tire granules via pyrolysis. Six non-platinum-group metal catalyst materials were synthesized based on this carbon material, Fe(NO3)3 · 9H2O, and either dicyandiamide or guanidine carbonate as the nitrogen source. Synthesis parameters such as pyrolysis temperature, precursor mass ratios, and acid washing time were varied for each material. All catalysts were characterized physically using HR-SEM, SEM-EDX, and N2 sorption analyses as well as electrochemically using the rotating disk electrode method in 0.1 M KOH. The materials were rich in nanofibers, and exhibited moderate porosity and specific surface area (S BET = 77-194 m2 g-1). By modifying the synthesis parameters of the materials, the electrochemical properties were successfully improved, achieving E onset = 0.92 V vs RHE and E 1/2 = 0.82 V vs RHE (Fe-guan III 900). The number of transferred electrons in the ORR was n = 4 for the more active materials.

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Section: Catalyst Synthesismentioning

confidence: 99%

Section: Physical Characterizationmentioning

confidence: 99%

Waste Tire Derived Carbon Support for Non-Platinum-Group Metal Catalyst Materials for Oxygen Reduction Reaction in Alkaline Medium

Laanemäe¹,

Jäger²,

Teppor³

et al. 2023

ECS Trans.

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show abstract

“…These carbon materials possess a high surface area, well-developed porosity, and a complex structure prone to chemical functionalizations, providing an excellent platform for catalytic reactions. They can be utilized as catalyst supports [3][4][5][6] or active catalysts on their own [7][8][9][10], enabling various chemical transformations.…”

Section: Introductionmentioning

confidence: 99%

Upgrading Pyrolytic Residue from End-of-Life Tires to Efficient Heterogeneous Catalysts for the Conversion of Glycerol to Acetins

Malaika,

Kowalska-Kuś,

Końska

et al. 2023

Molecules

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Recovered carbon blacks (rCBs) produced from end-of-life tires using pyrolysis were transformed into solid acid catalysts for the synthesis of acetins, i.e., products with a wide spectrum of practical applications. Tuning the chemical properties of the surface of samples and introducing specific functional groups on the rCBs were achieved through carbon functionalization with concentrated H2SO4. The initial and modified rCBs were thoroughly characterized using techniques such as elemental analysis, potentiometric back titration, thermogravimetric technique, scanning and transmission microscopy, X-ray photoelectron spectroscopy, etc. The catalytic activities of the samples were measured via batch mode glycerol acetylation performed at 110 °C and compared to the catalytic performance of the functionalized commercial carbon black. The modified rCBs were found to show a significant catalytic effect in the tested reaction, giving high glycerol conversions (above 95%) and satisfactory combined yields of diacetins and triacetin (~72%) within 4 h; this behavior was attributed to the presence of -SO3H moieties on the surface of functionalized rCBs. The reusability tests indicated that the modified samples were catalytically stable in subsequent acetylation runs. The obtained results evidenced the feasibility of using end-of-life tires for the production of effective acid catalysts for glycerol valorization processes.

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The review of advances in interfacial electrochemistry in Estonia: electrochemical double layer and adsorption studies for the development of electrochemical devices

Pikma

Ers

Siinor

et al. 2022

J Solid State Electrochem

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The electrochemistry nowadays has many faces and challenges. Although the focus has shifted from fundamental electrochemistry to applied electrochemistry, one needs to acknowledge that it is impossible to develop and design novel green energy transition devices without a comprehensive understanding of the electrochemical processes at the electrode and electrolyte interface that define the performance mechanisms. The review gives an overview of the systematic research in the field of electrochemistry in Estonia which reflects on the excellent collaboration between fundamental and applied electrochemistry.

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(Digital) Oxygen Reduction Reaction on Waste Tire Derived Carbon Material and Synthesized Non-Platinum Group Metal Catalysts in Alkaline Solution

Cited by 3 publications

References 19 publications

Waste Tire Derived Carbon Support for Non-Platinum-Group Metal Catalyst Materials for Oxygen Reduction Reaction in Alkaline Medium

Waste Tire Derived Carbon Support for Non-Platinum-Group Metal Catalyst Materials for Oxygen Reduction Reaction in Alkaline Medium

Upgrading Pyrolytic Residue from End-of-Life Tires to Efficient Heterogeneous Catalysts for the Conversion of Glycerol to Acetins

The review of advances in interfacial electrochemistry in Estonia: electrochemical double layer and adsorption studies for the development of electrochemical devices

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