Carbon foam derived from pitches modified with mineral acids by a low pressure foaming process

Tsyntsarski, Boyko; Petrová, B.; Budinova, T.; Petrov, N.; Krzesińska, M.; Pusz, S.; Majewska, Justyna; Tzvetkov, P.

doi:10.1016/j.carbon.2010.05.048

Cited by 46 publications

(26 citation statements)

References 26 publications

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“…The low strength of ACD12-150250, which was prepared from pitch treated only with a low HNO 3 to pitch ratio, is consistent with results reported in the literature [6].…”

Section: Bulk Properties Of the Activated Carbon Discssupporting

confidence: 79%

“…3 [30] was used as the carbon foam precursor in this study. The pitch was pretreated using nitric acid (HNO 3 ) and a thermal treatment step; this process increased the softening point of the pitch which improves the foaming properties [6] and allows better physical mixing of the pitch with the coal powder. We investigated the effect of pitch pretreatment conditions on the final carbon foam properties by treating the Class 170 pitch with three ratios of HNO 3 to pitch: 12 mL, 18 mL and 24 mL of 15 M HNO 3 to 100 g of pitch.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…A wide range of precursors have been reported for carbon foam synthesis including coal [5][6][7] , coke [8,9] , pitch [6,[10][11][12][13][14][15] , polymer [16][17][18][19] and biomass [20][21][22][23] . Of these materials, bituminous tar pitch and coal tar pitch are some of the most commonly used carbon precursors because pitch is already used in more-conventional activated carbon production processes, low cost pitch is widely available from the petrochemicals industry, and pitch has a high carbon content [24].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The preparation of activated carbon discs from tar pitch and coal powder for adsorption of CO 2 , CH 4 and N 2

Gao

Rufford

et al. 2017

Microporous and Mesoporous Materials

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We used a pitch foaming process to prepare high surface area activated carbon discs ACD with a relatively high mechanical strength (4.3 MPa) from mixtures of tar pitch and coal powders, with potassium hydroxide as a chemical activator. The two primary parameters investigated in this study were the amount of nitric acid used in the pitch pre-treatment and the size of the coal particles (0 -53 µm, 150 -250 µm, and 355 -550 µm). The pre-treatment of the pitch was observed to be critical in the production of the carbon discs and in this study the preferred ratio of 15 M nitric acid to pitch in weight was 17/100. The coal size of 0 -53 µm produced the activated carbon discs with the highest gas adsorption capacity, which we attribute to the stabilization of the pitch foaming process. Equilibrium adsorption capacities of CO 2 , N 2 , and CH 4 on the carbons were measured by a gravimetric sorption method at pressures up to 3500 kPa. At 298 K the adsorption capacities of carbon foam disc prepared with coal particle size of 0 -53 µm and pitch pre-treated with 18 ml HNO 3 per 100 g pitch were 3.08 mol/kg N 2 , 5.48 mol/kg CH 4 and 8.88 mol/kg CO 2 at about 3500 kPa.

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“…The low strength of ACD12-150250, which was prepared from pitch treated only with a low HNO 3 to pitch ratio, is consistent with results reported in the literature [6].…”

Section: Bulk Properties Of the Activated Carbon Discssupporting

confidence: 79%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The preparation of activated carbon discs from tar pitch and coal powder for adsorption of CO 2 , CH 4 and N 2

Gao

Rufford

et al. 2017

Microporous and Mesoporous Materials

View full text Add to dashboard Cite

show abstract

“…The unique properties of carbon foams determine their many potential applications in numerous industries: high-temperature heat capacity materials, porous electrodes, catalyst supports, filters,structure materials, etc. [5][6][7] In early 1960s, Walter Ford acquired carbon foams from the thermal decomposition of thermoset phenolic foams. The preparation of earlier carbon foams were used organic polymer as raw material.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11] In the present study, almost all pitches that used as foam precursor are commercial pitches. [12,13] Much attention has been paid to optimizing high thermal conductivity of carbon foams [5,14] , instead of its low thermal conductivity. China has large coal production, consumes large amount of coal annually.…”

Section: Introductionmentioning

confidence: 99%

Effects of Varying Processing Conditions on Carbon Foam Properties

Zhou

Chen

2016

MATEC Web Conf.

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Abstract. Purified coal-tar was chosen as the raw material for foaming precursor. Distillation methods that refining light constituent was applied as preliminary treatment of pitch. Carbon foam was prepared by the self-foaming of the resultant pitch. The effects of distilling temperature as well as time on the micro structure, bulk density, porosity, compressive strength, and thermal conductivity of carbon foam were investigated in this paper. The compressive strength of produced carbon foam can reach 6.287 MPa and thermal conductivity can lower than 0.048 W·m 1 ·K 1 .

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Experimental Investigation and Analysis of Mechanical Properties of Three‐Dimensionally Networked Porous Carbon Material

Inoue

Kojo

et al. 2018

Ceramic Transactions Series

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Carbon foam derived from pitches modified with mineral acids by a low pressure foaming process

Cited by 46 publications

References 26 publications

The preparation of activated carbon discs from tar pitch and coal powder for adsorption of CO 2 , CH 4 and N 2

The preparation of activated carbon discs from tar pitch and coal powder for adsorption of CO 2 , CH 4 and N 2

Effects of Varying Processing Conditions on Carbon Foam Properties

Experimental Investigation and Analysis of Mechanical Properties of Three‐Dimensionally Networked Porous Carbon Material

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