@article{Fedorets_Khlapova_Dikiy_Medvedeva_Medvedev_Uvarov_Bakay_2012, title={Effects of Gamma-Activation and Functionality Characteristics of Superdispersed ZrO2 –Catalystes in Methanol Conversion}, url={https://periodicals.karazin.ua/eejp/article/view/13673}, abstractNote={<p>On the example of a model system the methanol conversion influence of effects of γ-activation of nano ZrO<sub>2</sub>-catalystes is investigated on their functional characteristics in the processes of heterogeneous catalysis. Influence&nbsp; of γ-activation nanopowder ZrO<sub>2 </sub>on direction and reaction yield was controled up on the series of experiments at room temperature with nominally clean ZrO<sub>2</sub> and with ZrO<sub>2</sub> with addition of nano-Fe<sub>2</sub>O (~3%) in their initial and&nbsp; the γ-activated state. Activating of samples was carried out by bremsstrahlung on high-current electronic accelerator in NSC KIPT at energy of electrons 22 MeV and a current 500 μA. The features of structural transformations in&nbsp; γ-activated ZrO<sub>2</sub> were researched the method of X-ray diffractometry. It was shown that in the structure of ZrO<sub>2</sub> no essential changes and&nbsp; γ-activated particles of oxide keep monophase state and crystallinity of the initial state. Catalytic activity of ZrO<sub>2 </sub>and ZrO<sub>2</sub>/Fe<sub>2</sub>O<sub>3</sub> before and after their γ-activated was estimated on&nbsp; the absorbency of products of convertion reaction of methanol on the spectrophotometer of SF-46. The found out the sharp increase of activity of ZrO<sub>2</sub>-catalystеs after their γ-activated is ascribed to <em>synergy</em> of factors of ionizing radiation - big ionization losses of Auger electrons near a surface ZrO<sub>2</sub> nanoparticles from <sup>89</sup>Zr - and influences of high-reactionary formations of&nbsp; heterogeneous catalysis.</p&gt;}, number={1025(4)}, journal={East European Journal of Physics}, author={Fedorets, Ivan and Khlapova, Nina and Dikiy, Mykola and Medvedeva, Elena and Medvedev, Dmitrij and Uvarov, Vyacheslav and Bakay, D.}, year={2012}, month={Nov.}, pages={77-84} }