Surface chemistry, pore sizes and adsorption properties of activated carbon fibers and precursors treated with ammonia

Mangun, Christian L.; Benak, Kelly R.; Economy, James; Foster, Kenneth L

doi:10.1016/s0008-6223(00)00319-5

Cited by 450 publications

(221 citation statements)

References 14 publications

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“…Comparison of both FDU-15 carbon references showed clearly the influence of the high-temperature ammonia treatment on the activation of the porosity in the microporous range (micropore volume increased from 0.11 to 0.18 cm 3 /g) without modifying the mesopore volume. This phenomena was already reported in the literature [22]. The influence of the temperature used for the ammonia treatment is difficult to explain since antagonist phenomena could occur with the increase of the temperature: the formation of the micropores related to the presence of some volatile chemical species during the carbonization (CO, CO 2 , and H 2 O) and the activation step by ammonia, the collapse and/or shrinkage of the porous structure during the treatments, the reaction between the carbon matrix and the TM-based nanoparticles (carbothermal reduction, carbidation and/or carbonitridation).…”

Section: Nitrogen Adsorption Measurements (77k)supporting

confidence: 83%

Mesoporous C/CrN and C/VN Nanocomposites Obtained by One-Pot Soft-Templating Process

2016

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Nanocomposites of ordered mesoporous carbon associated with chromium nitride (CrN) or vanadium nitride (VN) nanoparticles were obtained by a simple one-pot synthesis based on the solvent evaporation induced self-assembly (EISA) process using Pluronic triblock surfactant as soft-template and a phenol-based resin (resol) as carbon precursor. These nanocomposites were characterized by X-ray diffraction, nitrogen physisorption and Transmission Electron Microscopy (TEM) techniques. Electron tomography (or 3D-TEM) technique was particularly useful for providing direct insight on the internal architecture of C/CrN nanocomposite. Nanocomposites showed a very well organized hexagonal mesoporous carbon structure and a relatively high concentration of nanoparticles well distributed in the porous network. The chromium and vanadium nitrides/mesoporous carbon nanocomposites could have many potential applications in catalysis, Li-ion batteries, and supercapacitors.

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Section: Nitrogen Adsorption Measurements (77k)supporting

confidence: 83%

Mesoporous C/CrN and C/VN Nanocomposites Obtained by One-Pot Soft-Templating Process

2016

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“…In addition, the pore volume and surface area of CO 2 -C-SiC-900 increase slightly with respect to those of C-SiC-900 (Table 1). NH 3 has been frequently used for doping N atoms into carbon materials through the reaction of carbon fragments with the nitrogen radicals derived from the decomposition of NH 3 at elevated temperatures [18,19]. We introduce NH 3 during the chlorination process intending to incorporate N in the framework of carbon layers during formation of C-C bonds and nucleation.…”

Section: 2mentioning

confidence: 99%

Modulation of the textures and chemical nature of C–SiC as the support of Pd for liquid phase hydrogenation

Pan

Zhou

et al. 2013

Carbon

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“…4c shows the N1s spectra. The common peaks were observed at two binding energy levels: pyridine N and C-N peaks appeared at 398.7 eV (±0.5 eV) and 400.7 eV (±0.5 eV), respectively [58]. Fig.…”

Section: Characteristics Of the P Tenera Charmentioning

confidence: 87%

“…The specific surface area increase by treatment with ammonia can be attributed to its etching effects. Mangun et al [58] reported that the specific surface area increased with increasing duration of ammonia treatment and with temperature. Fig.…”

Section: Preparation Of Samplesmentioning

confidence: 99%

Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

Lee¹,

Park²,

Lee³

et al. 2016

Carbon letters

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As a replacement for activated carbon, biochar was synthesized and used for the adsorptive removal of formaldehyde and nitrogen oxide. Biochar was produced from the fast pyrolysis of the red marine macro alga, Pyropia tenera. The P. tenera char was then activated with steam, ammonia and KOH to alter its characteristics. The adsorption of formaldehyde, which is one of the main indoor air pollutants, onto the seaweed char was performed using 1-ppm formaldehyde and the char was activated using a range of methods. The char activated with both the KOH and ammonia treatments showed the highest adsorptive removal efficiency, followed by KOH-treated char, ammonia-treated char, steam-treated char, and non-activated char. The removal of 1000-ppm NO over untreated char, KOH-treated char, and activated carbon was also tested. While the untreated char exhibited little activity, the KOH-treated char removed 80% of the NO at 50°C, which was an even higher NO removal efficiency than that achieved by activated carbon.

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Surface chemistry, pore sizes and adsorption properties of activated carbon fibers and precursors treated with ammonia

Cited by 450 publications

References 14 publications

Mesoporous C/CrN and C/VN Nanocomposites Obtained by One-Pot Soft-Templating Process

Mesoporous C/CrN and C/VN Nanocomposites Obtained by One-Pot Soft-Templating Process

Modulation of the textures and chemical nature of C–SiC as the support of Pd for liquid phase hydrogenation

Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

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