Search academic texts

Information × Registration Number 0220U102057, 0115U001450 , R & D reports Title The development of fundamental principles of creating nanocomposite catalysts based on graphene materials to eco-friendly heterogeneous catalytic processes of valuable organic products and components of motor fuels popup.stage_title Head Stryzhak Petro Ye., Доктор хімічних наук Registration Date 05-03-2020 Organization L. V. Pisarzhevskii Institute Of Physical Chemistry of The National Academy of Sciences of Ukraine popup.description2  The influence of dimensional and structural characteristics on the catalytic properties of synthesized nanocomposite platinum-containing catalysts in the processes of hydrogenation of ethylene, CO and in water displacement reactions was investigated. It has been shown that on the nanophase catalysts Pt / Al2O3 in the hydrogenation reaction of ethylene, when the size of the active phase increases, the process speed decreases. The obtained data testify to the structural sensitivity of the hydrogenation reaction of ethylene. A series of platinum-based catalysts deposited on ?-Al2O3 and which differ in size of the active phase was also investigated in the hydrogenation reaction of CO. The influence of the size of the active phase on the catalytic properties of synthesized catalysts was revealed. It was found that the hydrogenation rate of CO increases with the increase in the size of platinum nanoparticles deposited in the range of 2.7 - 8.4 nm. This dependence may be due to a decrease in the heat of adsorption of CO with an increase in the size of platinum nanoparticles. It was found that catalysts obtained by depositing platinum nanoparticles on carbon nanotubes exhibit higher catalytic activity in the water displacement reaction compared to platinum-based catalysts applied to activated carbon. 100% conversion to Pt / BNT catalysts is achieved at a temperature of 400-450 ° C. Product Description popup.authors popup.nrat_date 2020-04-02 Close