Mechanochemical Synthesis in the Nutating Centrifugal Ball Mill
P. BILLIK1,2, M. GURTH2 and T. TURANYI3
1Faculty of Natural Sciences, Comenius University, Mlynska Dolina, SK-842 15 Bratislava (Slovakia)
E-mail: billik@fns.uniba.skВ В
2Institute of Measurement Science, Slovak Academy of Sciences, Dubravska cesta 9, 841 04 Bratislava (Slovakia)
3KadaЕ€ Ltd., LapaЕЎka
cesta 458, 951 02 Pohranice (Slovakia)
Keywords: nutation, mechanochemical synthesis, TiO2, powders
Pages: 529–533
Abstract
Mechanochemical synthesis of TiO2 by using the simple laboratory scale nutating centrifugal ball mill was demonstrated for the first time. In our prototype, the nutation angle in the range of 0–20 deg, besides the speed of rotation of central axes up to 1400 rpm, can be adjusted independently. In order to compare the milling efficiency between Nutator and high-energy planetary ball mill TB-2, the soft mechanochemical reaction between TiOSO4 ⋅ 2H2O and Na2CO3 has been studied. In the case of nutating mill the intensity of diffractions corresponding to TiOSO4 ⋅ 2H2O and Na2CO3 completely disappeared after 5 min milling. In case of the planetary ball mill TB-2, due to the large difference in the centrifugal forces (60g vs 20g), mechanochemical treatment for 1 min leads to similar results and after 10 min, the sample contains mainly rutile TiO2 with trace of TiO2-II.
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