Preparation of high-surface-area PAN-based activated carbon by solution-blowing process for CO2 adsorption

Hsiao, Hung-Yi; Huang, Chao-Ming; Hsu, Ming-Yau; Chen, Hui

doi:10.1016/j.seppur.2011.08.006

Cited by 59 publications

(25 citation statements)

References 28 publications

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“…Figure 5 presents the relation between the BET surface area, and the maximum volume of CO 2 adsorbed is shown; it is observed that with increasing surface area of the activated carbon, the maximum volume of CO 2 adsorbed also increases, but it is noted that the experimental data are sparse with respect to the trend line, that is displayed in gray, which suggests that the adsorption of gas is affected by other interactions such as the porosity distribution and the surface chemical nature of the activated carbons. A similar trend presents the values found by Hsiao et al [28] for CO 2 adsorption on activated carbon obtained from ultra-thin PAN fibers with surface areas between 461 and 1,398 m 2 g -1 and CO 2 maximum quantities adsorbed between 4.14 and 5.53 mmol g -1 .…”

Section: Immersion Enthalpy Determinationsupporting

confidence: 90%

Granular activated carbons characterization by CO2 adsorption isotherms and immersion enthalpy

Gómez

Giraldo

Moreno–Piraján

2015

J Therm Anal Calorim

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Seven samples of activated carbon obtained from a lignocellulosic material, seeds of Mucuna mutisiana, by physical activation with nitrogen-steam at different activation times are characterized by CO 2 adsorption and immersion enthalpies in CCl 4 and H 2 O. The CO 2 isotherms at 273 K and immersion enthalpies in CCl 4 and water for the samples are determined with the aim of obtaining relations between the energetic parameters obtained of the Langmuir and Dubinin-Radushkevich models and the immersion enthalpies since the adsorbent-adsorbate interactions occur in gas phase and liquid phase, respectively. The values for the maximum volume of CO 2 adsorbed, V m , obtained by Langmuir model are in a range between 70.9 and 108 cm 3 g -1 . Adsorption characteristic energy of CO 2 and the immersion enthalpy in CCl 4 follow a behavior of second-order, and the maximum volume adsorbed, V m , decreases with the increase in the characteristic energy. The immersion enthalpies of activated carbons in water show a direct relationship with the maximum volume of CO 2 adsorbed indicating the influence of specific interactions in the CO 2 adsorption for the set of activated carbons obtained.

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Section: Immersion Enthalpy Determinationsupporting

confidence: 90%

Granular activated carbons characterization by CO2 adsorption isotherms and immersion enthalpy

Gómez

Giraldo

Moreno–Piraján

2015

J Therm Anal Calorim

View full text Add to dashboard Cite

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“…Activated carbons generally have higher CO 2 adsorption capacity than zeolite-like materials at pressures greater than atmospheric pressure due to surface hydrophobicity, extended surface area, relatively moderate strength, easier desorption, and thermal stability [12]. Up to now, previous studies have focused on the use of activated carbon, activated carbon fibers, carbon molecular sieves, carbon nanotubes, and graphene as adsorbents for CO 2 capture [11,[16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effect of exfoliation temperature on carbon dioxide capture of graphene nanoplates

Meng

Park

2012

Journal of Colloid and Interface Science

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“…Since CO 2 is an acidic gas, alkaline surface functional groups like nitrogen species on the AC surface improve the chemisorption of CO 2 from flue gas (Hsiao et al, 2011). Elemental analysis (EA) and high-resolution XPS analyses were used to determine the nitrogen content and type of nitrogen-containing functionalities in the samples, respectively.…”

Section: Nitrogen Content and Type Of Nitrogen-containing Functionalimentioning

confidence: 99%

“…The existence of moisture may greatly influence the CO 2 capture performance of lownitrogen-content RFAC due to the competition for adsorption between water and carbon dioxide on the surface of RFAC. It has been reported that moisture adversely affects CO 2 uptake in a variety of physical adsorbents, such as zeolites and carbonic (Hsiao et al, 2011). However, the highly humid flue gases, including 5-10% saturated water vapor, are treated in most of the post-combustion carbon captures projects (Ahn and Changha, 2004).…”

Section: Dynamic Co 2 Adsorptionmentioning

confidence: 99%

Facile Preparation of Nitrogen-Doped Activated Carbon for Carbon Dioxide Adsorption

Chen

Peng

Lin

et al. 2014

Aerosol Air Qual. Res.

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Nitrogen-doped activated carbons with high surface areas obtained from resorcinol and formaldehyde resins were evaluated as CO 2 adsorbents in a simulated flue gas stream under anhydrous and humid conditions. These carbons were prepared using two approaches, namely ammonia treatment without nitric acid pre-oxidation and amination after preoxidation. The pre-oxidation of activated carbons considerably enhanced the nitrogen incorporation during the amination process. The amination temperature affects the content and type of nitrogen incorporated onto the carbon surface, as determined by X-ray photoelectron spectroscopy, which enhances the specific adsorbent-adsorbate interaction for CO 2 in humid conditions. The presence of H 2 O in the feed gas significantly decreased CO 2 adsorption for a very low nitrogen content of virgin activated carbon. A sample prepared via the amination of pre-oxidized carbon at 700°C (NORF700) exhibited excellent tolerance to moisture and the highest CO 2 capacity of 2.10 mmol/g in a 7% CO 2 /83% N 2 /10% H 2 O wet stream at 50°C and 130 kPa. The high performance of NORF700 was ascribed to its high surface area, adequate micropore volume, and high amounts of pyrindinic-like and pyrrole-like nitrogen species. The results indicate that nitric acid preoxidation followed by ammonia treatment at 700°C is an appropriate process for preparing adsorbents for CO 2 separation in post-combustion applications.

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Preparation of high-surface-area PAN-based activated carbon by solution-blowing process for CO2 adsorption

Cited by 59 publications

References 28 publications

Granular activated carbons characterization by CO2 adsorption isotherms and immersion enthalpy

Granular activated carbons characterization by CO2 adsorption isotherms and immersion enthalpy

Effect of exfoliation temperature on carbon dioxide capture of graphene nanoplates

Facile Preparation of Nitrogen-Doped Activated Carbon for Carbon Dioxide Adsorption

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