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Information × Registration Number 0221U000134, 0120U102218 , R & D reports Title Carbon exomodified and metal-containing nanospheres as polyfunctional inverse action additives to fuel and lubricants popup.stage_title Head Polunkin Yeugene V., Кандидат хімічних наук Registration Date 02-01-2021 Organization V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine popup.description2  Modern methods of synthesis of carbon multispheric nanoclusters of fullerene type are considered, the advantages and disadvantages of different methods are shown. Theoretical ideas about the mechanisms of formation of three-dimensional carbon nanoscale objects are presented; the evolution of the formation of fullerene nanostructures is traced by the following stages: carbon atoms - molecular chains - rings - bulk nanosized clusters with closed shells. Multilayer fullerenes were produced in gram quantities by the method of high-frequency arc discharge in gas (propane-butane mixture) and liquid (aromatic and linear saturated hydrocarbons) phases. The structure of the obtained nanomaterials was investigated and confirmed by the methods of Raman scattering and fluorescence spectroscopic. Bench tests of influence of additives of the synthesized nanomaterials on energy efficiency of diesel fuels in engines are carried out. It was found that when adding very small doses (several ppm) of synthesized fullerenes to the fuel, the fuel consumption in the stable mode decreased by 6–10% (depending on the additive content) compared to similar engine operating costs in the same mode on the fuel without additives. It is established that the magnitude of the reduction of fuel consumption from the content of fullerenes in the fuel has a non-monotonic extreme character. The most optimal effect on engine performance was the addition of modified carbon nanoparticles to diesel fuel in the amount of approximately 3 ppm by weight of fuel (mass fraction 3·10-4 %). According to the method of detailed indicator diagrams, it is shown that the increase in fuel efficiency in the engine under the action of the addition of synthesized nanoclusters is due to the deepening of the conversion of chemical energy of fuel components into thermal energy (increasing fuel combustion). Product Description popup.authors Bereznitskiy Yaroslav O. Gayday Olga О. Kameneva Tatiana M. Melnykova Svіtlana L. Pyliavsky Volodymyr S. Starzhynska Ludmila І. popup.nrat_date 2021-01-02 Close