METHOD FOR PRODUCING A CATALYST FOR SELECTIVE HYDROGENATION OF ARABINOSE INTO ARABINITOL, CATALYST PRODUCED THEREVY, AND METHOD FOR SELECTIVE HYDROGENATION OF ARABINOSE INTO ARABINITOL USING THE RESULTING CATALYST Russian patent published in 2022 - IPC B01J23/42 B01J23/10 B01J21/06 B01J32/00 B01J35/10 B01J37/02 B01J37/18 C07C29/141 C07C31/18 C07H3/02 

FIELD: catalysts.

SUBSTANCE: invention relates to a method for producing a catalyst for selective hydrogenation of arabinose into arabinitol, a catalyst prepared thereby, and to a method for selective hydrogenation of arabinose into arabinitol using the resulting catalyst. Method for producing a catalyst includes the step of applying metal onto an oxide carrier. According to the invention, a mixed cerium-zirconium oxide carrier with a cerium oxide to zirconium oxide molar ratio 4:1, respectively, produced by thermostating an aqueous solution of (NH₄)₂Ce(NO₃)₆ and ZrO(NO₃)₂ with urea under the effect of UHF radiation with a power of 100 W and a frequency of 2.45 GHz at a temperature of 95 °C for 6 hours is used as a carrier, followed by depositing platinum onto the resulting carrier from an aqueous solution of H₂PtCl₆ at a pH of the medium of 7 and a temperature of 80 °C; the resulting catalyst with a 1% wt. content of platinum on a mixed cerium-zirconium oxide carrier with a micro-mesoporous structure with a micropore volume of 0.029 cm³/g and a specific surface area of 181 m²/g is reduced in a hydrogen current under 250 °C. The process of selective hydrogenation of arabinose into arabinitol is conducted in the presence of the resulting catalyst at a temperature of 70 °C under a hydrogen pressure of 10 atm for 120 min.

EFFECT: creation of an effective catalyst allowing the productivity of the process to be increased to 125 mol of arabinitol·mol^-1 Pt·h^-1 with maximum selectivity of arabinitol formation (100%), while reducing the reaction time to 120 minutes and lowering the hydrogen pressure to 10 atm, thereby simplifying the organisation of the process and reducing energy consumption and cost of the product; arabinose constitutes a five-membered monosaccharide (pentose), the hydrogenation whereof is used to produce arabinitol; polyatomic alcohols are widely used in the production of surfactants, cosmetics, and in medicine, since materials produced from the bioavailable raw materials exhibit good biocompatibility.

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