Molecular adsorption model for organic compounds over TiO2 – P25 by protonic distribution affinity
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| Format: | Artículo científico |
| Langue: | en |
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Universidad del Valle
2013
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| _version_ | 1876483106473508864 |
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| author | Miguel A. Mueses |
| author_facet | Miguel A. Mueses |
| contents | Molecular adsorption model for organic compounds over TiO2 – P25 by protonic distribution affinity Miguel A. Mueses Fiderman Machuca-Martínez Ingeniería Langmuir Photocatalysis Hinshelwood isotherm potentiometric titration protonic distribution affinity A predictive molecular adsorption model for organic compounds over TiO2-P25 particles was formulated. The model is an extension of a theoretical method of surface characterization called Protonic Distribution Affinity (PDA), which is obtained from potentiometric titration analysis, zero point charge (ZPC) of the material and adsorption isotherms of the Langmuir-Hinshelwood type. The chemical nature of the compound in the model was established by initial pH and molecular weigh. We found that, for the TiO2-P25, the ZPC was 6.8. The model was validated using experimental data of dichloroacetic acid (DCA), 4-chlorophenol (4-CP) and phenol (PH) to different conditions. The model has high predictive capacity, numerical stability and sturdiness for obtaining the solutions. For available experimental data, the correlation coefficient was 0.97. 2013 artículo científico 0123-3033 https://www.redalyc.org/articulo.oa?id=291329166018 en http://www.redalyc.org/revista.oa?id=2913 Ingeniería y Competitividad application/pdf Universidad del Valle Ingeniería y Competitividad (Colombia) Num.2 Vol.15 |
| format | Artículo científico |
| id | redalyc_291329166018 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidad del Valle |
| spellingShingle | Molecular adsorption model for organic compounds over TiO2 – P25 by protonic distribution affinity Miguel A. Mueses Ingeniería Langmuir Photocatalysis Hinshelwood isotherm potentiometric titration protonic distribution affinity Molecular adsorption model for organic compounds over TiO2 – P25 by protonic distribution affinity Miguel A. Mueses Fiderman Machuca-Martínez Ingeniería Langmuir Photocatalysis Hinshelwood isotherm potentiometric titration protonic distribution affinity A predictive molecular adsorption model for organic compounds over TiO2-P25 particles was formulated. The model is an extension of a theoretical method of surface characterization called Protonic Distribution Affinity (PDA), which is obtained from potentiometric titration analysis, zero point charge (ZPC) of the material and adsorption isotherms of the Langmuir-Hinshelwood type. The chemical nature of the compound in the model was established by initial pH and molecular weigh. We found that, for the TiO2-P25, the ZPC was 6.8. The model was validated using experimental data of dichloroacetic acid (DCA), 4-chlorophenol (4-CP) and phenol (PH) to different conditions. The model has high predictive capacity, numerical stability and sturdiness for obtaining the solutions. For available experimental data, the correlation coefficient was 0.97. 2013 artículo científico 0123-3033 https://www.redalyc.org/articulo.oa?id=291329166018 en http://www.redalyc.org/revista.oa?id=2913 Ingeniería y Competitividad application/pdf Universidad del Valle Ingeniería y Competitividad (Colombia) Num.2 Vol.15 |
| title | Molecular adsorption model for organic compounds over TiO2 – P25 by protonic distribution affinity |
| topic | Ingeniería Langmuir Photocatalysis Hinshelwood isotherm potentiometric titration protonic distribution affinity |
| url | https://www.redalyc.org/articulo.oa?id=291329166018 |