Porous structure of polyarylamide-based activated carbon fibres

Stoeckli, Fritz; Centeno, Teresa A.; Fuertes, Antonio B.; Muñiz, Jesús

doi:10.1016/0008-6223(96)00088-7

Cited by 62 publications

(45 citation statements)

References 14 publications

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“…This corresponds also to the activation tion series based on P-M470E. of acetylene cokes [19], of Spanish anthracite [20] and of pyrolyzed tyres [16], with a gradient DL /DW similar to o o that of regime II. Regime III produces micropores with 5.…”

Section: Discussionsupporting

confidence: 62%

Activated carbons prepared from thermally and chemically treated petroleum and coal tar pitches

Daguerre

Guillot

Stoeckli

2001

Carbon

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Petroleum and coal tar pitches have been treated thermally at 4008C and 4708C, extracted with toluene and subsequently activated with CO at 9008C. With one exception, the development of the micropore widths and volumes in the resulting 2 carbons follows the trend observed for carbons based essentially on precursors of vegetable origin. On the other hand, petroleum pitch treated at 4008C leads to an active carbon which follows the pattern observed for cokes, semi-cokes and pyrolyzed tyres. It is suggested that the difference between the two types of active carbons is due to the large amount of compounds with low molecular weight left in the petroleum pitch after thermal soaking.

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Section: Discussionsupporting

confidence: 62%

Activated carbons prepared from thermally and chemically treated petroleum and coal tar pitches

Daguerre

Guillot

Stoeckli

2001

Carbon

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“…The raw material of AC is carbonized by thermal decomposition or pyrolysis followed by the activation process at higher temperatures in a furnace. The developed AC usually exhibits high BET surface area, greater pore volume and smaller pore size which may enhance its adsorption capacity; hence, an excellent adsorption of adsorbate on the adsorbent surface can be achieved [6]. Large sorption capacity in micropores can be achieved by chemical or physical activation which can also result in wider micropore openings.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetic activated carbon developed from palm kernel shells

Anyika

Asri

Majid

et al. 2017

Nanotechnol. Environ. Eng.

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Magnetic activated carbon (MG-AC), a solid product made by dispersing magnetic substrates on AC, is gaining attention for the removal of heavy metals from wastewater due to its favorable physico-chemical properties such as enhanced surface area and magnetic properties, respectively. However, the effects of two contrasting substrates, i.e., metal solution and metal particles, for the synthesis of MG-AC to obtain enhanced magnetic property have not been considered. The MG-AC was prepared by incorporating Fe 3 O 4 into the AC from two different sources of iron: Fe 3 O 4 extracted from electric arc furnace slag and from a ferric chloride/ferrous sulfate solution, to produce magnetic palm kernel shell from slag (MG-PKSS) and magnetic palm kernel shell from iron suspension (MG-PKSF), respectively. The adsorbent samples were characterized using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, X-ray diffraction, electron microscopy, i.e., SEM and FESEM, energy-dispersive X-ray, nitrogen adsorption, vibrating sample magnetometer. The results showed that the MG-PKSF had a greater BET surface area of 257 m 2 g -1 , a pore volume of 0.1124 cc g -1 and higher magnetic properties with a magnetic saturation of 49.55 emu g -1 relative to the MG-PKSS. The FTIR spectrum of the MG-PKSF illustrated the intense OH bending at 1629 cm -1 which can be attributed to the presence of oxygen in the samples. The absorption bands at 1093 and 579 cm -1 indicated the presence of C-O stretching and metal-oxygen (M-O) bands due to the interaction of iron and oxygen. Therefore, the MG-PKSF presented better characteristics for heavy metal removal from wastewater relative to the MG-PKSS, thereby suggesting that the raw material (metal solution) for impregnation played a crucial role in enhancing the quality of the MG-AC.

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“…Synthesized from polymeric carbon precursors, ACFs contain narrow and uniform pore size distributions with widths on the order of 1 nm [6,7]. Images of ACFs from scanning tunneling microscopy have revealed networks of elongated slit-shaped and ellipsoidshaped pores [8,9].…”

Section: Introductionmentioning

confidence: 99%

Pore size distribution and supercritical hydrogen adsorption in activated carbon fibers

Purewal¹,

Kabbour²,

Vajo³

et al. 2009

Nanotechnology

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Pore size distributions (PSD) and supercritical H 2 isotherms have been measured for two activated carbon fiber (ACF) samples. The surface area and the PSD both depend on the degree of activation to which the ACF has been exposed. The low-surface-area ACF has a narrow PSD centered at 0.5 nm, while the high-surface-area ACF has a broad distribution of pore widths between 0.5 and 2 nm. The H 2 adsorption enthalpy in the zero-coverage limit depends on the relative abundance of the smallest pores relative to the larger pores. Measurements of the H 2 isosteric adsorption enthalpy indicate the presence of energy heterogeneity in both ACF samples. Additional measurements on a microporous, coconut-derived activated carbon are presented for reference.

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Porous structure of polyarylamide-based activated carbon fibres

Cited by 62 publications

References 14 publications

Activated carbons prepared from thermally and chemically treated petroleum and coal tar pitches

Activated carbons prepared from thermally and chemically treated petroleum and coal tar pitches

Synthesis and characterization of magnetic activated carbon developed from palm kernel shells

Pore size distribution and supercritical hydrogen adsorption in activated carbon fibers

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