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Information × Registration Number 0223U003948, 0122U201324 , R & D reports Title Creation of high-quality highly selective acid-base heterogeneous catalysts by various methods and research of their surface popup.stage_title Head Butenko Eleonora O., Кандидат технічних наук Registration Date 27-07-2023 Organization State Higher Educational Institution "Azov State Technical University" popup.description2  Heterogeneous catalysis differs to a much greater degree of dispersion. Each molecule of a heterogeneous catalyst is a catalytic center, whereas in heterogeneous catalysis only centers on the surface are active. Therefore, the heterogeneous catalyst has a much higher activity per unit mass of catalyst. This allows the use of much lower concentrations of catalyst. Heterogeneous catalytic reactions occur most often under kinetic control, because the rate of diffusion of reagents to the catalytic center is much higher than the rate of the actual chemical reaction. Since heterogeneous catalysts are easily identifiable chemical compounds, the mechanisms of heterogeneous catalytic reactions are generally well studied. For homogeneous catalytic processes, ideas about the mechanism of reactions are quite vague and contradictory. The main disadvantage of heterogeneous catalysis is the complexity of separating the catalyst from the products and its recirculation. On the contrary, for homogeneous catalysis, separation is either not required at all (stationary catalyst bed) or carried out by such simple methods as filtration or centrifugation. Much more complex processes, such as extraction, rectification or ion exchange, are required to isolate heterogeneous catalysts. It would be most expedient to create catalysts having positive properties of heterogeneous (activity) and homogeneous (separation) catalysts. Product Description popup.authors Butenko Eleonora O. Trush Olha N. Chichkareva Galina G Yaroshuk Kateryna P popup.nrat_date 2023-07-27 Close