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Cu-Al-O Powders Prepared from Zeolite Precursors by Combination Treatment of Ball Milling and Heating

Cleo Kosanović ; Ruđer Bošković Institute, Zagreb, Croatia
Mirko Stubičar ; Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
Ana Mužic ; Ruđer Bošković Institute, Zagreb, Croatia
Nenad Tomašić ; Institute of Mineralogy and Petrography, Faculty of Science, University of Zagreb, Zagreb, Croatia

Sažetak

By applying combination of mechanochemical and thermal treatment important materials that
could be used in sensor and semiconductor technology as well in catalysis are obtained. High
energy ball milling was applied to prepare powder samples by treating mixture consisted a) of
Cu and ammonium exchanged zeolite A and b) of CuO and ammonium exchanged zeolite A.
According to X-ray powder diffraction the mechanical treatment resulted in mixture of amorphous
phase and low size crystal particles. After 3 h of milling the samples were isothermally
treated at the appropriate temperature yielding crystalline mixtures with a dominant phase of
CuAlO2. Thermal treatment of Cu-exchanged zeolite A resulted in a crystalline sample with
dominant phase CuAl2O4.

Ključne riječi

zeolite A; CuO; Cu; isothermally heating; ball milling

Hrčak ID:

31127

URI

https://hrcak.srce.hr/31127

Datum izdavanja:

15.11.2008.

Posjeta: 1.630 *