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Information × Registration Number 0206U005612, 0105U000010 , R & D reports Title New nanoparticles of 3d metals and their oxides, materials based thereon, their magnetochemical, spectra land catalytical properties popup.stage_title Head Kolotilov Sergey Volodymyrovich, Registration Date 11-04-2006 Organization L.V.Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine popup.description2 The influence of the conditions of thermolysis of Cu, Co, Cr polynuclear complexes on phase composition and size of nanoparticles of these metal oxides was studied. It was shown that decomposition of coordination compounds, deposited on inert carriers (ZrO2, Al2O3, porous molecular sieves MCM-41 and SBA-15) results in formation of particles of smaller size compared to thermolysis of pure coordination compounds. New approach to preparation of nanodisperse oxides of 3d metals with pre-determined particles size was proposed. Catalytic activity of synthesized oxide nanocomposites in reaction of deep methane oxidation was studied, the dependency of catalytic activity on the nature of 3d metal, the nature of carrier, size of nanoparticles, as well as Cu/Co ratio was shown. The acidity of some samples' surface was studied, it was found that catalyst's activity grows with increase of acidic centers' power. The efficiency of chromoxide catalysts in the process of element analysis of organic compounds was studied and it was found that catalyst's activity grows with decrease of nanoparticles size, however its thermal stability significantly decreases in this line. The method for preparation of chromoxide catalyst was proposed on the grounds of performed study; such catalyst is not worse than import analogues. The method for preparation of nanocomposites, containing mono- and binuclear Ni(II) and Co(II) complexes in pores of molecular sieve MCM-41, and the method for synthesis of nanoparticles of these metals in pores were developed. Spectral and magnetochemical properties of synthesized nanocomposites were studied. Principal possibility to use such systems for catalytic reduction of organic substrates was shown. Product Description popup.authors popup.nrat_date 2020-04-02 Close