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Characterization of Activated Carbon Fibers by CO2 Adsorption
Abstract
The adsorption of CO 2 up to pressures of 4 MPa has been studied using two series of activated carbon fibers (ACFs) covering a wide range of burn-off. The relative fugacities covered in these experiments range from 3 × 10 -4 to 0.76. Additionally, N 2 adsorption at 77 K and CO 2 adsorption at 273 and 298 K at subatmospheric pressures have been carried out. The experiments performed at high pressures allow us to compare both adsorptives at similar ranges of adsorption potential. The results obtained led to the following conclusions: (i) CO 2 adsorption at 273 K at subatmospheric pressures is a suitable technique to characterize the narrow microporosity of the ACF. (ii) The use of N 2 to characterize the narrow microporosity is not appropriate because its adsorption is limited by the existence of diffusional restrictions in this type of porosity. (iii) CO 2 at 273 K (or 298 K) is an adsorptive that behaves quite similarly to N 2 at 77 K at comparable relative pressure ranges; thus, CO 2 adsorbs in the super-microporosity range (pore size: 0.7−2 nm) at 298 K if pressures of about 4 MPa are used.
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Cites
Sing, K. S. W. (1985) · Pure and Applied Chemistry · doi:10.1351/pac198557040603 · Cited by 24,485
Cited by
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Self-citationAssessment of the Role of Micropore Size and N-Doping in CO 2 Capture by Porous Carbons
Sevilla, M., Parra, J. B., & Fuertes, A. B. (2013) · ACS Applied Materials & Interfaces · doi:10.1021/am401423b · Cited by 410
Falco, C., Marco-Lozar, J. P., Salinas-Torres, D., Morallón, E., Cazorla-Amorós, D., Titirici, M. M., & Lozano-Castelló, D. (2013) · Carbon · doi:10.1016/j.carbon.2013.06.017 · Cited by 246
Self-citationGasification biochar from biowaste (food waste and wood waste) for effective CO2 adsorption
Igalavithana, A. D., Choi, S. W., Dissanayake, P. D., Shang, J., Wang, C.-H., Yang, X., Kim, S., Tsang, D. C. W., Lee, K. B., & Ok, Y. S. (2020) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2019.121147 · Cited by 225
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Metadata
- Authors
- Cazorla-Amorós, D., Alcañiz-Monge, J., & Linares-Solano, A.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 1996-01-01
- Volume
- 12
- Issue
- 11
- Pages
- 2820-2824
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2341338906
- Cited by
- 397
- References
- 1
- FWCI
- 2.42
- Type
- journal article
- Language
- en
- Open access
- closed
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- Cazorla-Amorós, D., Alcañiz-Monge, J., & Linares-Solano, A. (1996). Characterization of Activated Carbon Fibers by CO2 Adsorption. Langmuir. https://doi.org/10.1021/la960022s
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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