About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Stroganov V.F. – doctor of chemical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Amelchenko M.O. – post-graduate student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Potapova L.I. – candidate of chemistry science, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 |
| Title of the article | Influence of acid and thermal activation of kaolin on its dispersion, chemical composition and sorptive properties |
| Abstract. | In this article were studied the effect of acid and high-temperature activation of the filler - kaolin, its main physical parameters. It is found that high temperature activation can increase the dispersibility of the filler from 30 microns to 19 microns, and a 2-fold increase in its specific surface area. Furthermore high temperature activation increases the sorption properties of kaolin, and kaolinite partial formation of amorphous structure. It was found that the known method of activation of kaolin 3 % solution of acetic acid (A-kaolin) is not conducive to the manifestation of the sorption properties and increase the dispersion of the filler but in differential thermal analysis of the original filler observed a 10 % weight loss in the range of 0-350 °C, for which the A-kaolin in the range of 0-500 °C, which may indicate the content of impurities in the sample, which bind to acetic acid. In both cases a decrease in activation of the pH value to 5-4. |
| Keywords. | thermal and acid activation, acetic acid, kaolin, dispersion, thermogravimetry. |
| For citations: | Stroganov V.F., Amelchenko M.O., Potapova L.I. Influence of acid and thermal activation of kaolin on its dispersion, chemical composition and sorptive properties // Izvestiya KGASU. 2016. №1(35) P.192-198. |
