Synthesis of nanoporous carbons from mixtures of coal tar pitch and furfural and their application as electrode materials

Petrová, B.; Tsyntsarski, Boyko; Budinova, T.; Petrov, N.; Ania, Conchi O.; Parra, J.B.; Mladenov, M.; Tzvetkov, P.

doi:10.1016/j.fuproc.2010.07.008

Cited by 32 publications

(20 citation statements)

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“…In a previous work about the effect of the ratio furfural:coal-tar-pitch in the carbon precursor, we have observed that the furfural content has a strong effect on the porosity of the resulting carbon [11]. As a general rule, low proportions of furfural give rise to activated carbons with a narrow microporosity, which is gradually opened in favor of large micropores and mesopores as the furfural content rises.…”

Section: Materials Synthesis and Characterizationmentioning

confidence: 85%

“…Indeed, carbon adsorbents with different structure and properties have been prepared from mixtures of furfural and biomassderived tars, while optimizing the operating conditions (including the composition of the mixtures, activation reagents, pre-treatment of the precursors, etc.) [10,11].…”

Section: Materials Synthesis and Characterizationmentioning

confidence: 99%

“…On the contrary, when furfural is used as precursor, the final carbon material is less dense and more reactive, due to the insertion of oxygen in the carbon skeleton that favors the formation of pores during the activation process. In contrast, when mixtures of coal tar pitch and furfural in different proportions are used as precursors, the synthesized carbons displayed physicochemical and nanoporous features that can be tailored by an adequate composition of the precursor mixture [11].…”

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Activated carbon from coal tar pitch and furfural for the removal of p-nitrophenol and m-aminophenol

Petrová

Tsyntsarski

Budinova

et al. 2011

Chemical Engineering Journal

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Adsorption of m-aminophenol and p-nitrophenol from aqueous solution on activated carbon synthesized on the base of industrial by product (coal tar pitch) and furfural was investigated.The adsorption capacity of the activated carbon and its oxidized modification is related to the surface area and composition of the prepared materials, as well as to the nature of the adsorbents. Despite the moderate porosity, the prepared materials display adequate adsorption capacity towards the investigated aromatic compounds. Both adsorbates show higher affinity towards the hydrophobic carbon, confirming that the retention mechanism occurs via nonspecific interactions between the electronic density of the adsorbent and the aromatic pollutants. Electrostatic interactions may also appear depending on the solution pH and the charge distribution of the carbons; we have observed that this parameter has a strong influence on the final performance of the oxidized carbon, where repulsive interactions that reduced the uptake of the carbon were found to appear within a larger pH range.

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Section: Materials Synthesis and Characterizationmentioning

confidence: 85%

Section: Materials Synthesis and Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Activated carbon from coal tar pitch and furfural for the removal of p-nitrophenol and m-aminophenol

Petrová

Tsyntsarski

Budinova

et al. 2011

Chemical Engineering Journal

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“…La microestructura cristalina de un material de carbono es un parámetro determinante, ya que de él dependen propiedades tan importantes como la dureza, resistencia eléctrica y mecánica, conductividad térmica, estabilidad frente a oxidación, etc. En el campo de los materiales avanzados de carbono, las breas de alquitrán también constituyen precursores muy convenientes para la generación de fibras de carbono, carbones porosos, grafito artificial, carbón negro, nanotubos, entre otros [24,25].…”

Section: Síntesis De Materiales Avanzados De Carbonounclassified

Contribuciones fundamentales para el desarrollo tecnológico de materiales avanzados de carbono a partir de alquitrán de hulla

Camporredondo-Saucedo

2014

prospect

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RESUMENLa brea generada a partir de alquitrán de hulla constituye un precursor de bajo coste, de materiales avanzados de carbono de excelentes prestaciones mecánicas debido a su alto rendimiento en carbono con estructura grafítica derivado de su alto grado de aromaticidad. En este artículo se revisan las contribuciones que han dado impulso al desarrollo tecnológico de los materiales avanzados de carbono obtenidos a partir de alquitrán de hulla. Se analiza el efecto de las condiciones experimentales, de cada una de las etapas de síntesis, sobre los parámetros caracterís-ticos de la materia en las diferentes fases de procesamiento que incluyen la coquización del carbón, la destilación del alquitrán, la pirólisis de la brea y la carbonización de la mesofase.Palabras clave: Alquitrán de hulla, Mesofase de brea, Carbonización, Materiales avanzados de carbono. ABSTRACTPitch generated from the coal tar is a low cost precursor of advanced carbon materials with excellent mechanical properties due to its high carbon yield with graphitic structure derived from its high degree of aromaticity. This article reviews the contributions that have given impetus to the technological development of advanced carbon materials derived from coal tar. Analyze the effect of experimental conditions, each of the synthesis steps, on the characteristic parameters of the material in the different processing stages including the coking of coal, tar distillation, pyrolysis of tar and carbonization of mesophase.Keywords: Coal tar, Tar pitch mesophase, Carbonization, Advanced carbon materials. INTRodUCCIóNEl proceso de coquización del carbón es extraordinariamente complejo, en términos bastante simples consiste en la destilación del carbón del que se obtiene el coque como residuo sólido, una mezcla de gases denominado gas coque y una mezcla de hidrocarburos condensados que constituyen el alquitrán.El alquitrán de hulla es el producto de la condensación obtenido por el enfriamiento hasta la temperatura ambiente, del gas desprendido en la destilación destructiva del carbón. Es un líquido negro viscoso más denso que el agua y compuesto principalmente de una mezcla compleja de hidrocarburos aromáticos con anillos condensados. Puede contener compuestos fenólicos, bases nitrogenadas aromáticas y sus alquil derivados e hidrocarburos parafínicos y olefínicos [1].

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“…have been used as raw electrode materials [4][5][6][7][8], coal tar pitch (CTP) has been of interest as a precursor for EDLC electrode material because the AC produced from it has high a SSA and high activation yield. There have been many studies about the activation of CTP, CTP derived meso-carbon microbeads, and needle cokes [9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Activated carbons prepared from mixtures of coal tar pitch and petroleum pitch and their electrochemical performance as electrode materials for electric double-layer capacitor

Lee¹,

Kwon²,

Choi³

et al. 2015

Carbon letters

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Activated carbons (ACs) were prepared by activation of coal tar pitch (CTP) in the range of 700°C-1000°C for 1-4 h using potassium hydroxide (KOH) powder as the activation agent. The optimal activation conditions were determined to be a CTP/KOH ratio of 1:4, activation temperature of 900°C, and activation time of 3 h. The obtained ACs showed increased pore size distribution in the range of 1 to 2 nm and the highest specific capacitance of 122 F/g in a two-electrode system with an organic electrolyte, as measured by a charge-discharge method in the voltage range of 0-2.7 V. In order to improve the performance of the electric double-layer capacitor electrode, various mixtures of CTP and petroleum pitch (PP) were activated at the optimal activation conditions previously determined for CTP. Although the specific capacitance of AC electrodes prepared from CTP only and the mixtures of CTP and PP was not significantly different at a current density of 1 A/g, the AC electrodes from CTP and PP mixtures showed outstanding specific capacitance at higher current rates. In particular, CTP-PP61 (6:1 mixture) had the highest specific capacitance of 132 F/g, and the specific capacitance remained above 90% at a high current density of 3 A/g. It was found that the high specific capacitance could be attributed to the increased micro-pore volume of ACs with pore sizes from 1 to 2 nm, and the high power density could be attributed to the increased meso-pore volume.

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Synthesis of nanoporous carbons from mixtures of coal tar pitch and furfural and their application as electrode materials

Cited by 32 publications

References 32 publications

Activated carbon from coal tar pitch and furfural for the removal of p-nitrophenol and m-aminophenol

Activated carbon from coal tar pitch and furfural for the removal of p-nitrophenol and m-aminophenol

Contribuciones fundamentales para el desarrollo tecnológico de materiales avanzados de carbono a partir de alquitrán de hulla

Activated carbons prepared from mixtures of coal tar pitch and petroleum pitch and their electrochemical performance as electrode materials for electric double-layer capacitor

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