Litteris et Artibus

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Author: search.filters.author.Beznosyk, YuriyHas files: Yes

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    Modeling of heterogeneous catalytic reduction process of aldehydes
    (Lviv Polytechnic Publishing House, 2016) Skoretska, Ivanna; Beznosyk, Yuriy; National Technical University of Ukraine “Kyiv Polytechnic Institute”
    The article considers the mathematical model of the reduction reaction of anisyl aldehyde by the Meerwein-Ponndorf-Verley mechanism. The activity of the zeolite catalyst with the assistance of which the reaction took place has been analyzed and calculated the rate constant of reaction.
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    Modelling of sol-gel synthesis of functionalized silica materials in a microreactor
    (Lviv Polytechnic Publishing House, 2016) Miroshnychenko, Yuliia; Beznosyk, Yuriy; National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
    In this paper, the optimal parameters of the process of silica surface functionalization in the microreactor were studied based on the developed mathematical model: the residence time distribution, the flow velocity, the concentration profile. Detailed investigation of fluid dynamics in the microvolume reactor channel was solved using CFD models.
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    Modeling of heterogeneous catalytic recovery process of ketones
    (Видавництво Львівської політехніки, 2017-12-23) Skoretska, Ivanna; Beznosyk, Yuriy; National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
    The article considers the mathematical model of the recovery reaction of cyclohexanole by the Meerwein- Ponndorf-Verley mechanism. The activity of the three catalysts in the presence of which the reaction of cyclohexanole recovery took place has been analyzed and selected the most active zeolite for further calculations. With the use of Mathcad 15.0 software the rate constants of investigated reaction has been calculated.
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    Analysis of the process of obtaining methyl esters of fatty acids from waste vegetable oils
    (Lviv Polytechnic Publishing House, 2015) Kukushkina, Olena; Vasylkevich, Oleksandr; Bondarenko, Sergiy; Beznosyk, Yuriy; Kyiv Politechnic Institute
    The technological features of the process of obtaining the methyl esters of carboxylic acids from renewable materials were analyzed. The results showed that the waste vegetable oil can be used as raw material for biofuels production. However, to increase product yield and its quality technological scheme of obtaining the product correction is needed.
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    Modelling of heterogeneous systems in microreactors
    (Lviv Polytechnic Publishing House, 2015) Miroshnychenko, Yuliyia; Beznosyk, Yuriy; National Technical University of Ukraine “Kyiv Polytechnic Institute”
    In this paper an overview of approaches to the modelling of heterogeneous systems (liquid-liquid) in the microreactor was performed, mathematical models of various chemical reactions in microchannels published in the literature was considered and the comparison of theoretical and practical experiments was executed. Based on the generalized data, it has been proved the feasibility of microstructured reactor application for the process of silica surface functionalization in order to carry out the synthesis of innovative sorption materials. The next stage of this research is to develop a mathematical model of the process and its implementation by means of special software environment.
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    Modeling of Ni2+ exchange on the strong acid ion-exchange resin and the organic-inorganic ionite
    (Lviv Polytechnic Publishing House, 2015) Afonin, Gennadiyy; Beznosyk, Yuriy; Dzyazko, Yuliyia; National Technical University of Ukraine “Kyiv Polytechnic Institute”; Academy of Sciences
    In dynamic conditions extraction of ions of Ni2+ from the combined solution with using of acid ion-exchange gel pitch and the composite ionite on its basis containing units of nanoparticles of hydrophosphate of zirconium is investigated. The model allowing to define time for which capacity of Ni2+ ions is ful offered. The model assumes use only of empirical parameters reflecting concoction of ions in a firm phase.