LIQUID-PHASE HYDROGENATION CATALYST FOR GLUCOSE AND METHOD FOR ITS PREPARATION Russian patent published in 2018 - IPC B01J23/755 B01J31/06 B01J37/34 C07C31/26 C07C29/141 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, namely to production of heterogeneous catalysts for liquid-phase hydrogenation of glucose into sorbitol, and can be used in food, pharmaceutical and energy industries for the production of food sweeteners, auxiliary components of drugs and antifoam additive to fuels. Liquid-phase hydrogenation catalyst of glucose contains a carrier and nickel as an active component. According to the invention, super-crosslinked polystyrene with a cross-linking degree of 195÷205 %, while the nickel content in the catalyst is from 24 to 26 wt. %, and the content of super-cross-linked polystyrene – 74÷76 wt. %. Method for preparing the catalyst comprises treating the support with a solution of a nickel salt, evaporating and drying the resulting catalyst, and then reducing it with hydrogen for 3 hours. According to the invention, super-crosslinked polystyrene is used as a support, and a solution of nickel acetate is used with a concentration of 0.8÷0.9 mol/l. Carrier treatment with a solution of nickel acetate is performed with an additional simultaneous ultrasonic action at a frequency of 37 kHz for 30 minutes, followed by evaporation at a temperature of 70±5 °C for 12±0.5 h with repeated simultaneous ultrasound with a frequency of 37 kHz, then the resulting catalyst is dried in air at a temperature of 105±5 °C for 12±0.5 h and reduced with hydrogen at 300±10 °C a flow rate of 10–15 ml/min.

EFFECT: increasing the activity, selectivity and operational stability of the heterogeneous catalyst in the liquid-phase hydrogenation reaction of glucose by using an inert polymer carrier with a large surface area and increasing the availability of the active metal (nickel).

4 cl, 20 dwg, 23 ex