Modelling the gasification of carbon fibres

Fuertes, Antonio B.; Marbán, Gregorio; Muñiz, Jesús

doi:10.1016/0008-6223(96)00161-3

Cited by 14 publications

(12 citation statements)

References 21 publications

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“…The former reveals large proportion of small pores (<6 Å ) as well as a significant increase in proportion of thin walls having a single carbon sheet, associated with rapid disappearance of the thick walls, when increasing the activation, leading to significant increase in specific surface area at high activation. Such a trend indicates that pore coalescence, normally associated with gasification [38,39], is not a dominant phenomenon in this case, due to the survival of the single sheet walls. To the contrary, coal chars indicate a slight increase in proportion of thin walls having single carbon plane, associated with a relatively significant increase in proportion of thick walls at high degrees of conversion, and decrease in specific surface area at very high conversion.…”

Section: Evolution Of Pore Size Distribution During Course Of Activationmentioning

confidence: 88%

Characterization of activated carbon fibers using argon adsorption

Nguyen

Bhatia

2005

Carbon

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Section: Evolution Of Pore Size Distribution During Course Of Activationmentioning

confidence: 88%

Characterization of activated carbon fibers using argon adsorption

Nguyen

Bhatia

2005

Carbon

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“…Usually, polyacrylonitrile-based activated carbon fibers (PAN-ACFs) with high surface areas and nitrogen contents are made from polyacrylonitrile fibers through a partial gasification reaction. 21,22 PAN-ACFs exhibit higher adsorption capacities for small organic molecules than activated carbons. 23 Thus, much research has been devoted to the preparation of PAN-ACFs from modified polyacrylonitrile, and attention has been paid to the removal of organic compounds or heavy metal ions using PAN-ACFs.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical porous polyacrylonitrile-based activated carbon fibers for CO2 capture

et al. 2011

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“…[19][20][21][22] Recent studies reported that the composite of PAN and multi-wall carbon nanotubes (MWNTs) were prepared by gelation/crystallization from PAN solution containing MWNTs. [23][24][25] And the resultant PAN films were carbonized at the temperature between 900-1600 C under co-existence of MWNTs.…”

Section: Introductionmentioning

confidence: 99%

Structural Changes of Polyacrylonitrile Film by Catalytic Effects of Nickel Particles under Carbonization Process

Chen

Jiang

Bin

et al. 2007

Polym J

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ABSTRACT:Structural changes of polyacrylonitrile (PAN) film, prepared by gelation/crystallization from solutions, were studied by the effect of nickel particles on the carbonization at various temperatures under argon atmosphere. The carbonized PAN at 800 C showed thread-like structures extended from nickel particles. At 1000 C, the thread-like structures changed to rod-like structures whose one end side was closed by a nickel particle or the aggregation. The disruption of rod-like structures occurred at 1200 C, and the carbonization at 1400 C provided new growth of carbon layers on the surface of spherulitic nickel particles. At 1600 C, fibrous textures were observed as residual traces of disrupted carbon layers by the overflow of melted nickel due to the thermal expansion. The graphitization degrees for G-and T-components in the films carbonized at 1600 C were investigated on the basis of X-ray diffraction intensity distribution from the (002) plane. The analysis was done in terms of the comparison between the experimental and theoretical diffraction intensity curves. The theoretical calculation was carried out by using a concept concerning the para-crystalline theory proposed by Hoseman and Bagchi from the viewpoint of the lattice fluctuation of the c-axis. Carbon materials with high-performance and functionality have been prepared by carbonization of organic compounds, such as polyimide, mesophase pitch, rayon, et al. [1][2][3][4][5] Recent studies suggested that fine particles of transition metals coexisting with these compounds provided considerable catalytic effect on acquiring the graphite structure at lower temperatures.6-10 Oya et al. 11,12 studied the catalytic graphitization of carbonaceous materials by doping different amount of an organic-nickel compound into a phenolic resin. They found that four kinds of carbon were obtained under different carbonization conditions by a high resolution electron microscope and X-ray diffraction. The effects of catalytic graphitization were termed as D-effect, T-effect, A-effect and Tn-effect. On the other hand, Hatori et al.13 studied the carbonization process, related to the catalytic effect of nickel and structural change during carbonization of polyimide films. They pointed out that nickel particles played an important catalytic effect to improve graphitization of polyimide. Further studies were carried out by Kiselev et al.14 and Bin et al. 15 for the graphitization degree of polyimide film at lower temperature in terms of catalytic role of nickel particles. Bin et al. studied catalytic effect of nickel particles and structural change during carbonization by using the three-layered polyimide film, and they succeeded to prepare tough graphite film (sheet), with the thickness of ca. 150 mm.Polyacrylonitrile (PAN) is also a well-known polymer as precursor to prepare carbon materials. [16][17][18] Kruk et al. prepared mesoporous carbons with sharp distribution pore size from PAN by using ordered and disordered mesoporous silica templates, and the detailed characte...

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Modelling the gasification of carbon fibres

Cited by 14 publications

References 21 publications

Characterization of activated carbon fibers using argon adsorption

Characterization of activated carbon fibers using argon adsorption

Hierarchical porous polyacrylonitrile-based activated carbon fibers for CO2 capture

Structural Changes of Polyacrylonitrile Film by Catalytic Effects of Nickel Particles under Carbonization Process

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