Research of Porization and Adsorptions in High-Porous Adsorptive Layers of Vermiculite
| Autor: | Kulash K. Syrmanova, J. B. Kaldybekova, N. E. Botabaev, M. T. Suleimenova, N. K. Sarypbekova |
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| Rok vydání: | 2016 |
| Předmět: |
Chemistry
020101 civil engineering 02 engineering and technology General Chemistry Partial pressure Vermiculite 021001 nanoscience & nanotechnology Biochemistry 0201 civil engineering Adsorption Chemical engineering Rheology Drug Discovery Cation-exchange capacity medicine Environmental Chemistry Mica Swelling medicine.symptom 0210 nano-technology Porosity |
| Zdroj: | Oriental Journal of Chemistry. 32:1319-1328 |
| ISSN: | 2231-5039 0970-020X |
| DOI: | 10.13005/ojc/320306 |
| Popis: | Adsorption capacity of the adsorbent is dependent on the concentration of the substance in the liquid or vapor phase, its partial pressure, temperature, and the initial state of the adsorbent. At the swelling a cellular porous structure is formed, total porosity that connects with the entered number and the content of the gaseous component masses. The rheological characteristics of porous masses have the decisive effect on the porous structure. Common state for all versions of swelling is a plastic-viscous porous mass condition during their porization. The interlayer structure and inter-packet intervals may be considered as vermiculite plate micropores with dimensions of 0.3 – 1.2 nm. Vermiculite cation exchange capacity is in the range of 100-150 mEq / 100 g, i.e. from clay minerals it is one of the most interchangeable. The research results of the internal structure of adsorption layers by the adsorption isotherms means indicative of the internal surface of the porous layer is characterized by an extremely complex and developed form and can be described by means of fractal geometry. A model of the geometric structure of mica materials formed in the process of blistering during heat treatment is developed. The presented model has sufficiently general form and can be used both in the organization of systematic experimental studies of porization and adsorption in the adsorption layers of highly porous, and for the porization vermiculite optimization. |
| Databáze: | OpenAIRE |
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