Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon Surface
Several active carbon samples with different quantities of surface oxides were obtained by annealing previously oxidised material under vacuum at various temperatures (ranging from 180°C to 900°C). Concentrated HNO 3 was used as the oxidiser. The oxygen content, the pH of the aqueous slurry and the...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2001-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263617011494402 |
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| author | H. Grajek A. Świą;tkowski Z. Witkiewicz M. Pakuła S. Biniak |
| author_facet | H. Grajek A. Świą;tkowski Z. Witkiewicz M. Pakuła S. Biniak |
| author_sort | H. Grajek |
| collection | DOAJ |
| description | Several active carbon samples with different quantities of surface oxides were obtained by annealing previously oxidised material under vacuum at various temperatures (ranging from 180°C to 900°C). Concentrated HNO 3 was used as the oxidiser. The oxygen content, the pH of the aqueous slurry and the concentration of surface functional groups were determined for all the carbons. Spectral studies (FT-IR, XPS) were performed for selected samples. The heterogeneous decomposition of hydrogen peroxide was also studied. The catalytic activity for H 2 O 2 decomposition correlated well with the acid consumption on the carbon materials. A linear relationship was derived between the oxygen reduction potentials and the logarithm of the peroxide decomposition rate constants. |
| format | Article |
| id | doaj-art-2f62dcfcb051413fa8ba22ffbbf50eb2 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2001-09-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-2f62dcfcb051413fa8ba22ffbbf50eb22025-01-03T00:11:20ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382001-09-011910.1260/0263617011494402Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon SurfaceH. Grajek0A. Świą;tkowski1Z. Witkiewicz2M. Pakuła3S. Biniak4 Institute of Chemistry, Military Technical Academy, Kaliskiego 2, 00-908 Warsaw, Poland Institute of Chemistry, Military Technical Academy, Kaliskiego 2, 00-908 Warsaw, Poland Institute of Chemistry, Jan Kochanowski University, Chęcińska 5, 25-020 Kielce, Poland Naval Academy, 81-103 Gdynia, Poland Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Torun, PolandSeveral active carbon samples with different quantities of surface oxides were obtained by annealing previously oxidised material under vacuum at various temperatures (ranging from 180°C to 900°C). Concentrated HNO 3 was used as the oxidiser. The oxygen content, the pH of the aqueous slurry and the concentration of surface functional groups were determined for all the carbons. Spectral studies (FT-IR, XPS) were performed for selected samples. The heterogeneous decomposition of hydrogen peroxide was also studied. The catalytic activity for H 2 O 2 decomposition correlated well with the acid consumption on the carbon materials. A linear relationship was derived between the oxygen reduction potentials and the logarithm of the peroxide decomposition rate constants.https://doi.org/10.1260/0263617011494402 |
| spellingShingle | H. Grajek A. Świą;tkowski Z. Witkiewicz M. Pakuła S. Biniak Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon Surface Adsorption Science & Technology |
| title | Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon Surface |
| title_full | Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon Surface |
| title_fullStr | Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon Surface |
| title_full_unstemmed | Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon Surface |
| title_short | Changes in the Surface Chemistry and Adsorptive Properties of Active Carbon Previously Oxidised and Heat-Treated at Various Temperatures. I. Physicochemical Properties of the Modified Carbon Surface |
| title_sort | changes in the surface chemistry and adsorptive properties of active carbon previously oxidised and heat treated at various temperatures i physicochemical properties of the modified carbon surface |
| url | https://doi.org/10.1260/0263617011494402 |
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