Surface characteristics of KOH-treated commercial carbons applied for CO adsorption
The effect of an alkali treatment (potassium hydroxide) on the properties of a commercial activated carbon has been studied. The aim of the treatment was to improve the adsorption properties of the material toward carbon dioxide. In the result of the treatment, silica contained in the raw carbon was...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2018-02-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617417704527 |
| _version_ | 1826910945008418816 |
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| author | Zofia Lendzion-Bieluń Ł Czekajło Daniel Sibera Dariusz Moszyński Joanna Sreńscek-Nazzal Antoni W Morawski Rafal J Wrobel Beata Michalkiewicz Walerian Arabczyk Urszula Narkiewicz |
| author_facet | Zofia Lendzion-Bieluń Ł Czekajło Daniel Sibera Dariusz Moszyński Joanna Sreńscek-Nazzal Antoni W Morawski Rafal J Wrobel Beata Michalkiewicz Walerian Arabczyk Urszula Narkiewicz |
| author_sort | Zofia Lendzion-Bieluń |
| collection | DOAJ |
| description | The effect of an alkali treatment (potassium hydroxide) on the properties of a commercial activated carbon has been studied. The aim of the treatment was to improve the adsorption properties of the material toward carbon dioxide. In the result of the treatment, silica contained in the raw carbon was removed and the density of the material increased. The changes in the surface chemistry were observed as well. The treatment of the activated carbon with KOH resulted in a complete removal of carboxy and lactone groups and a decrease of the general content of the acidic groups (more significant than that of basic groups). Simultaneously, the surface concentration of hydroxyl groups increased. The alkali treatment of activated carbon resulted in an increase of carbon dioxide uptake of 14% (measured using a volumetric method at 0℃). The adsorption of carbon dioxide on activated carbon has a mixed (physicochemical) character and that two types of adsorption sites are present at the surface. The adsorption energy varies roughly from 25 to 60 kJ/mol. |
| first_indexed | 2024-03-07T17:34:25Z |
| format | Article |
| id | doaj.art-c407144bc248421cb8aa692be955e09b |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2025-02-17T10:08:21Z |
| publishDate | 2018-02-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-c407144bc248421cb8aa692be955e09b2025-01-02T02:58:11ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382018-02-013610.1177/0263617417704527Surface characteristics of KOH-treated commercial carbons applied for CO adsorptionZofia Lendzion-BieluńŁ CzekajłoDaniel SiberaDariusz MoszyńskiJoanna Sreńscek-NazzalAntoni W MorawskiRafal J WrobelBeata MichalkiewiczWalerian ArabczykUrszula NarkiewiczThe effect of an alkali treatment (potassium hydroxide) on the properties of a commercial activated carbon has been studied. The aim of the treatment was to improve the adsorption properties of the material toward carbon dioxide. In the result of the treatment, silica contained in the raw carbon was removed and the density of the material increased. The changes in the surface chemistry were observed as well. The treatment of the activated carbon with KOH resulted in a complete removal of carboxy and lactone groups and a decrease of the general content of the acidic groups (more significant than that of basic groups). Simultaneously, the surface concentration of hydroxyl groups increased. The alkali treatment of activated carbon resulted in an increase of carbon dioxide uptake of 14% (measured using a volumetric method at 0℃). The adsorption of carbon dioxide on activated carbon has a mixed (physicochemical) character and that two types of adsorption sites are present at the surface. The adsorption energy varies roughly from 25 to 60 kJ/mol.https://doi.org/10.1177/0263617417704527 |
| spellingShingle | Zofia Lendzion-Bieluń Ł Czekajło Daniel Sibera Dariusz Moszyński Joanna Sreńscek-Nazzal Antoni W Morawski Rafal J Wrobel Beata Michalkiewicz Walerian Arabczyk Urszula Narkiewicz Surface characteristics of KOH-treated commercial carbons applied for CO adsorption Adsorption Science & Technology |
| title | Surface characteristics of KOH-treated commercial carbons applied for CO adsorption |
| title_full | Surface characteristics of KOH-treated commercial carbons applied for CO adsorption |
| title_fullStr | Surface characteristics of KOH-treated commercial carbons applied for CO adsorption |
| title_full_unstemmed | Surface characteristics of KOH-treated commercial carbons applied for CO adsorption |
| title_short | Surface characteristics of KOH-treated commercial carbons applied for CO adsorption |
| title_sort | surface characteristics of koh treated commercial carbons applied for co adsorption |
| url | https://doi.org/10.1177/0263617417704527 |
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