METHOD OF MECHANOCHEMICAL SYNTHESIS OF NICKEL HYDROGENATION CATALYST Russian patent published in 2020 - IPC B01J37/08 B01J37/18 B01J23/755 C23C18/02 

FIELD: technological processes.

SUBSTANCE: invention relates to production of applied nickel hydrogenation catalyst by mechanochemical method for reduction of organic compounds, and can be used in food, perfume, petrochemical and oil refining industry. Method comprises applying on a carrier in form of silica gel directly in the original dry form of the compound containing nickel, using a planetary mill at an energy consumed of 0.08–3.86 kJ/g.cat., which corresponds to 20–50 % of maximum power and time operation 10–240 s, reduction at 470 °C, heating rate 4 °C/min, in hydrogen flow at rate of 30 cm³/min. Method comprises applying to 16.675–25.736 g of silica gel 16.564–25.525 g of hexaqua nickel (II) nitrate, held at 150–170 °C for 180–200 minutes, then calcined at 450–470 °C for at least two hours until termination of sample weight change, and after the reduction procedure at the same temperature, hydrogen flow is replaced with gas flow composition: 99.99 % – argon and 0.01 % – oxygen, held for 10–15 minutes at this temperature, cooled down the finished catalyst to room temperature.

EFFECT: high catalyst activity, high catalyst availability for use by avoiding the need to wash the catalyst, simplifying the catalyst reactivation process and storage, owing to the absence of by-products during reactivation of the catalyst after storage.

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