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Information × Registration Number 0215U007048, 0114U001844 , R & D reports Title Development of catalysts based on VIII grup metals supported on carbon nanomaterials for tne hydrogenation of aromatic nitro compounds and carbon monoxide popup.stage_title Head Strizhak Petro Evgenovich, Registration Date 27-01-2015 Organization L.V.Pysarzhevsky Institute of Physical Chemistry of National Academy of Science of Ukraine popup.description2 The method of synthesis nitrogen-containing carbon nanotubes (N-CNT). Nitrogen-containing carbon nanotubes obtained by catalytic hours in acetonitrile catalysts coated metal nanoparticles on oxide carriers (CVD-method). The optimum conditions for the synthesis of N-CNT within the parameters specified in the catalyst Ni / MgO, obtained by impregnation under which achieved the greatest yield N-CNT, synthesis temperature of 900 ° C, the concentration of acetonitrile in the gas mixture of 1.2% vol. Methods of TEM, Raman spectroscopy and X-ray photoelectron spectroscopy showed that carbon nanotubes obtained contain no amorphous carbon catalyst and additives. The diameters of the nanotubes are treated in the range of 20-80 nm, and their internal diameters of 5-50 nm. It is shown that the chemical nature of the media in catalysts Me / MgO, Me / CaO, Mg / CaCO3 Me / Al2O3 and Mg / Sr2O3 (Me - Ni, Co, Fe) determines the strength of the interaction between the metal and the carrier, which affects the size and distribution nanoparticles of metal active phase on the support surface, and thus determines the morphology, diameter and purity carbon nanotubes. Stated that Catalysts Me / CaO and Mg / CaCO3 a mixture bambukopodibnyh cylindrical carbon nanotubes and carbon nanofibers with impurities and amorphous carbon, due to the interaction between the metal and support, while carbon nanotubes synthesized catalyst Mg / Al2O3 is homogeneous in morphology, have a relatively narrow diameter distribution and purity, which is close to 100%, due to the formation of homogeneous metal nanoparticles due to the strong interaction of metal atoms with surface groups of the carrier. The use of catalysts prepared by co-precipitation which leads to the formation of carbon nanotubes less affected than other forms of carbon in the application of nanoparticles impregnated catalysts and Ni, Co and Fe, derived from salts of the metals. Increased purity carbon nanotubes due to the formation of mixed oxides in the preparation spivosadzhenyh catalyst that enhances the interaction between the metal and the carrier. Platinum deposited on carbon carriers with a high content of surface functional groups shows less catalytic activity in the reaction of water displacement, compared with nosyamy lower in oxygen-containing groups. Product Description popup.authors Cтрижак Петро Євгенович Бичко Ігор Богданович Кайданович Зінаїда Володимирівна Калішин Євген Юрійович popup.nrat_date 2020-04-02 Close