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Information × Registration Number 0223U001867, 0118U003622 , R & D reports Title Development of physico-chemical bases of synthesis and modification of nanocomposite membranes with ion-exchange, catalytic and proton-conductivity properties popup.stage_title Head Yevchuk Iryna Yu., Кандидат хімічних наук Registration Date 03-02-2023 Organization Department of Physical and Chemistry of Combustible Fossils LM Litvinenko of the National Academy of Sciences of Ukraine popup.description2  Using the method of UV-initiated polymerization and modification of the polymer matrix with silica nanoparticles formed as a result of the sol-gel process of precursors in situ, new ion-conductive organic and hybrid polymer/silica materials based on a mixture of acrylate sulfogroup-containing monomers were synthesized, and the optimal ratio of components was selected obtaining materials with specified properties. The influence of various factors: the composition of the polymer matrix, the content of the inorganic component, temperature on the physicochemical properties of the synthesized polymer and hybrid organic/inorganic materials was studied: proton conductivity, ion exchange capacity, sorption properties, thermal behavior, viscoelastic properties, oxidation ability. Magnetically separable nanostructured catalysts for oxidation systems based on metals of variable valence and sol-gel TEOS system were created. The study of adsorption synthesized composites was carried out and their dependence on the composition of the catalytic layer and the conditions for the formation of the SiO2 stabilizing layer was determined. A theoretical model of dye adsorption from an aqueous solution is proposed, which considers the process as a pseudochemical reaction of displacement of solvent molecules from adsorption centers on the adsorbent surface by dye molecules. The dependence of the efficiency of oxidation processes on the composition of the catalyst, the ratio of reagents, and the presence of oxygen in the reaction medium was established. The composition of the catalyst for highly efficient oxidation of organic compounds (up to 96-98%) in model solutions of MS dye and dairy effluents was determined. The ability of the catalyst to work several cycles without regeneration and without loss of catalytic activity was confirmed. A mathematical model has been developed to describe the thermodynamic and elastic properties of an internodal polymer chain based on the statistics of rand Product Description popup.authors Yevchuk Iryna Demchyna Oksana I. Zhyhailo Mariia Makido Olena Yu. Medvedevskykh Yuriy Hryhorovych Musiy Rostyslav Khovanets Halyna I. popup.nrat_date 2023-02-03 Close