Effect of thermal pretreatment on porous structure of asphalt-based carbon Full article
| Journal |
Journal of Materials Science
ISSN: 0022-2461 , E-ISSN: 1573-4803 |
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| Output data | Year: 2022, Volume: 57, Pages: 7239–7249 Pages count : 11 DOI: 10.1007/s10853-022-07106-x | ||
| Tags | porous carbon, petroleum asphalt, KOH activation, CO2 adsorption | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0012 |
Abstract:
The effect of thermal pretreatment on the porous structure and adsorption properties of asphalt-based carbons activated with potassium hydroxide was investigated by FTIR, Raman spectroscopy, TEM, N2 and CO2 adsorption. Two series of the activated carbons were prepared by a one-stage method using KOH as the activating agent and a two-stage method including pretreatment of asphalt at 450 °C. A cross-effect of the KOH/asphalt ratio and pretreatment conditions on the characteristics of the porous structure of the activated carbons was revealed. The pretreatment of asphalt before activation is demonstrated to be a necessary stage for the effective control of the carbon porous structure by variation the KOH/asphalt ratio from 2 to 4. The porous carbon derived from petroleum asphalt exhibited the high CO2 adsorption capacity of 3.8 mmol/g at 25 °C and 1 atm and good selectivity for CO2 over N2, indicating possible applications in CO2 capture technology.
Cite:
Gorbunova O.V.
, Baklanova O.N.
, Gulyaeva T.I.
, Arbuzov A.B.
, Trenikhin M.V.
, Lavrenov A.V.
Effect of thermal pretreatment on porous structure of asphalt-based carbon
Journal of Materials Science. 2022. V.57. P.7239–7249. DOI: 10.1007/s10853-022-07106-x WOS Scopus РИНЦ OpenAlex
Effect of thermal pretreatment on porous structure of asphalt-based carbon
Journal of Materials Science. 2022. V.57. P.7239–7249. DOI: 10.1007/s10853-022-07106-x WOS Scopus РИНЦ OpenAlex
Dates:
| Submitted: | Dec 8, 2021 |
| Accepted: | Mar 14, 2022 |
| Published print: | May 4, 2022 |
Identifiers:
| Web of science: | WOS:000778061600002 |
| Scopus: | 2-s2.0-85127554430 |
| Elibrary: | 48424316 |
| OpenAlex: | W4226197796 |