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Information × Registration Number 0222U000483, 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 11-01-2022 Organization Department of Physical and Chemistry of Combustible Fossils LM Litvinenko of the National Academy of Sciences of Ukraine popup.description2  The influence of the polymer matrix composition on the properties of proton-conducting polymer and hybrid polymer/silica membranes based on acrylic monomers was investigated. The success of the synthesis was confirmed by IR spectroscopy and scanning electron microscopy. The effect of the cross-linking agent (N,N'-methylene(bis)acrylamide-MBA) сontent on the properties of membranes was found. The introduction of MBA increased thermal and mechanical properties of materials. Synthesized membranes were evaluated in terms of their use as proton-conducting membranes of fuel cells: their thermal and mechanical properties, water absorption, chemical resistance, proton conductivity were measured. The proton conductivity of the synthesized membranes increases with increasing AMPS content - (1.4-4.4)×10-2Sm/cm, which is close to the value of the proton conductivity of commercial Nafion membrane. Membranes are characterized by high chemical resistance, and swelling in methanol is relatively low (<30%), which allows their use in direct methanol fuel cells. The study of the catalytic properties of the synthesized heterogeneous magnetosensitive catalyst– CoFe2O4/SiO2/CuO – in the Fenton system in the process of fine treatment of dairy wastewater was conducted. The efficiency of the process was analyzed by monitoring chemical oxygen demand (COD), as well as measuring H2O2 content redox potential (RP), oxygen content and pH. It was established that when oxygen is supplied, peroxide compounds are formed on the catalyst, which take an active part in the oxidation of organic pollutants. It was determined that for the system "dairy effluents:oxygen:catalyst" the degree of oxidation reaches 96% in 30min, what, together with the ease of removing the magnetosensitive catalyst from the reaction medium and the absence of the need for additional introduction of hydrogen peroxide, makes the process environmentally friendly and cost-effective available for industrial treatment of wastewate. Product Description popup.authors Demchyna Oksana I. Zhyhailo Mariia Makido Olena Yu. Medvedevskykh Yuriy Hryhorovych Musiy Rostyslav Khovanets Halyna I. popup.nrat_date 2022-03-09 Close