Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon Dioxide
The isothermal oxidation of regenerated cellulose carbon fibres in the presence of CO 2 or steam was described, together with the changes in the porous structures of the active fibres that evolve during different stages of the process. Three such stages were defined. In the initial stage of heating...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2003-05-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361703322405079 |
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| _version_ | 1841564113362223104 |
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| author | Krzysztof Babeł |
| author_facet | Krzysztof Babeł |
| author_sort | Krzysztof Babeł |
| collection | DOAJ |
| description | The isothermal oxidation of regenerated cellulose carbon fibres in the presence of CO 2 or steam was described, together with the changes in the porous structures of the active fibres that evolve during different stages of the process. Three such stages were defined. In the initial stage of heating and out-gassing, changes in the porous structure were related to the violent pyrolysis that occurred. As a result, a considerable number of micropores (accessible to nitrogen) were generated together with a small number of mesopores. The next stage (principal activation stage) involved burning at a constant rate accompanied by an uniform increase in the micropore volume. In the third stage, an increased rate of oxidation was observed. This was accompanied by the development of transitional pores linked with the simultaneous limitation of micropore evolution. This stage was not efficient. |
| format | Article |
| id | doaj-art-90438942c8c7442aa786f058f798ada1 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2003-05-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-90438942c8c7442aa786f058f798ada12025-01-02T23:11:47ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382003-05-012110.1260/026361703322405079Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon DioxideKrzysztof BabełThe isothermal oxidation of regenerated cellulose carbon fibres in the presence of CO 2 or steam was described, together with the changes in the porous structures of the active fibres that evolve during different stages of the process. Three such stages were defined. In the initial stage of heating and out-gassing, changes in the porous structure were related to the violent pyrolysis that occurred. As a result, a considerable number of micropores (accessible to nitrogen) were generated together with a small number of mesopores. The next stage (principal activation stage) involved burning at a constant rate accompanied by an uniform increase in the micropore volume. In the third stage, an increased rate of oxidation was observed. This was accompanied by the development of transitional pores linked with the simultaneous limitation of micropore evolution. This stage was not efficient.https://doi.org/10.1260/026361703322405079 |
| spellingShingle | Krzysztof Babeł Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon Dioxide Adsorption Science & Technology |
| title | Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon Dioxide |
| title_full | Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon Dioxide |
| title_fullStr | Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon Dioxide |
| title_full_unstemmed | Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon Dioxide |
| title_short | Porous Structure Evolution of Cellulose Carbon Fibres during Oxidation in Carbon Dioxide |
| title_sort | porous structure evolution of cellulose carbon fibres during oxidation in carbon dioxide |
| url | https://doi.org/10.1260/026361703322405079 |
| work_keys_str_mv | AT krzysztofbabeł porousstructureevolutionofcellulosecarbonfibresduringoxidationincarbondioxide |