Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated Carbons
Activated carbons were prepared by carbonizing ground apricot stones impregnated with 20–60 wt% phosphoric acid at 300–600°C, in a limited air supply. Highly activated carbons with surface areas amounting to 1200 m 2 /g and pore radii of 8–10 Å were obtained when a mixture of apricot stones and 50 w...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
1999-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749901700806 |
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| author | M.A. Hourieh M.N. Alaya A.M. Youssef F. El-Sejariah |
| author_facet | M.A. Hourieh M.N. Alaya A.M. Youssef F. El-Sejariah |
| author_sort | M.A. Hourieh |
| collection | DOAJ |
| description | Activated carbons were prepared by carbonizing ground apricot stones impregnated with 20–60 wt% phosphoric acid at 300–600°C, in a limited air supply. Highly activated carbons with surface areas amounting to 1200 m 2 /g and pore radii of 8–10 Å were obtained when a mixture of apricot stones and 50 wt% phosphoric acid was carbonized at 450°C. Activation with phosphoric acid proceeds via the creation of pores of radii between 8 Å and 10 Å. The adsorption data for nitrogen at 77 K obey models based on surface coverage satisfactorily and also models based on pore volume filling. Although a slight upward deviation was shown in the Dubinin–Radushkevich (DR) plots, this model was still verified and allowed the determination of useful sorption parameters. |
| format | Article |
| id | doaj-art-b01aa00b66d14d27a515bcb4e15f515d |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 1999-09-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-b01aa00b66d14d27a515bcb4e15f515d2025-01-02T22:37:59ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40381999-09-011710.1177/026361749901700806Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated CarbonsM.A. Hourieh0M.N. Alaya1A.M. Youssef2F. El-Sejariah3 Faculty of Science, University of Aleppo, Aleppo, Syria Faculty of Science, University of Aleppo, Aleppo, Syria Chemistry Department, Faculty of Science, University of Mansoura, Mansoura, Egypt Faculty of Science, University of Aleppo, Aleppo, SyriaActivated carbons were prepared by carbonizing ground apricot stones impregnated with 20–60 wt% phosphoric acid at 300–600°C, in a limited air supply. Highly activated carbons with surface areas amounting to 1200 m 2 /g and pore radii of 8–10 Å were obtained when a mixture of apricot stones and 50 wt% phosphoric acid was carbonized at 450°C. Activation with phosphoric acid proceeds via the creation of pores of radii between 8 Å and 10 Å. The adsorption data for nitrogen at 77 K obey models based on surface coverage satisfactorily and also models based on pore volume filling. Although a slight upward deviation was shown in the Dubinin–Radushkevich (DR) plots, this model was still verified and allowed the determination of useful sorption parameters.https://doi.org/10.1177/026361749901700806 |
| spellingShingle | M.A. Hourieh M.N. Alaya A.M. Youssef F. El-Sejariah Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated Carbons Adsorption Science & Technology |
| title | Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated Carbons |
| title_full | Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated Carbons |
| title_fullStr | Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated Carbons |
| title_full_unstemmed | Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated Carbons |
| title_short | Analysis of Nitrogen Sorption Data of Chemically Activated Carbon by the Application of Adsorption Models Based on Surface Coverage and Volume Filling of Micropores. 1. Phosphoric Acid Activated Carbons |
| title_sort | analysis of nitrogen sorption data of chemically activated carbon by the application of adsorption models based on surface coverage and volume filling of micropores 1 phosphoric acid activated carbons |
| url | https://doi.org/10.1177/026361749901700806 |
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