Surface areas of kaolin, α-Fe 2 O 3 and hydroxy-Al montmorillonite
| Autor: | A. K. Helmy, N. Peinemann, E. A. Ferreiro, S. G. de Bussetti |
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| Rok vydání: | 1998 |
| Předmět: |
Surface (mathematics)
Sorbent Polymers and Plastics Inorganic chemistry Hematite Organic molecules chemistry.chemical_compound Colloid and Surface Chemistry Adsorption Montmorillonite chemistry visual_art Monolayer Materials Chemistry visual_art.visual_art_medium Molecule Physical and Theoretical Chemistry |
| Zdroj: | Colloid & Polymer Science. 276:539-543 |
| ISSN: | 1435-1536 0303-402X |
| DOI: | 10.1007/s003960050278 |
| Popis: | Adsorption of eight organic molecules on kaolin, α-Fe2O3 and hydroxy-Al montmorillonite was studied to examine the effect of sorbate area on the values of the surface area of these materials. For each sorbent, the number of molecules at monolayer coverage per gram produced a single hyperbola when plotted as a function of the area occupied by an adsorbate. The equations of the hyperbolas are: NA=22.23 A0.098 for the kaolin, NA=53.70 A-0.399 for α-Fe2O3 and NA=161.81 A0.322 for the hydroxy-Al montmorillonite. These equations give accessible surface areas and not the true surface areas of the solids studied, which remain elusive. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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