Адсорбція хітозану на поверхні змішаних оксидів
The adsorption isotherms of chitosan on silica, silica-titania and silica-alumina have surfaces been obtained. The adsorption capability was found to decrease in the row silica-alumina>silica-titania> silica. Chitosan modified oxides have been examined by the temperature-progra...
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| Datum: | 2008 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | Ukrainisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2008
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| Online Zugang: | https://surfacezbir.com.ua/index.php/surface/article/view/270 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
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Surface| Zusammenfassung: | The adsorption isotherms of chitosan on silica, silica-titania and silica-alumina have surfaces been obtained. The adsorption capability was found to decrease in the row silica-alumina>silica-titania> silica. Chitosan modified oxides have been examined by the temperature-programmed desorption mass spectrometry method. The low-temperature peaks of the thermo-desorption curves of chitosan destruction occur for silica-titania and silica-alumina as well as for individual silica. These low-temperature maxima correspond to the thermolysis of trains of adsorbed polymer. Thermolysis of chitosan on silica-titania and silica-alumina has been shown to realize with deep destruction of pyranosic rings and breaking of  C–C bonds in contrast to thermolysis of chitosan on silica surface. |
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