PROPANE DEHYDROGENATION CATALYST AND METHOD FOR PRODUCING PROPYLENE USING IT Russian patent published in 2021 - IPC B01J20/16 B01J23/885 B01J23/80 B01J29/40 B01J37/02 B01J37/08 

FIELD: organic chemistry.

SUBSTANCE: group of inventions relates to a propane dehydrogenation catalyst and a method for producing propylene. A catalyst for propane dehydrogenation is described, including alumosilicate zeolite ZSM-5 modified by platinum and several promoter metals in H -, NH₄- or Na-form with a molar ratio of SiO₂/Al₂O₃ from 50 to 130, and the catalyst contains, weight percentage: 0.1-0.5 platinum, 0.5-2.0 zinc and 1-3 copper. At the same time the zeolite is modified with metals in three stages: first, it is impregnated with an aqueous solution of a mixture of platinum, zinc and copper salts, then calcined at 500-550°C, after which it is treated with a solution of sodium carbonate. A method for producing propylene by dehydrogenation of propane has been developed, including bringing the specified catalyst into contact with propane at an elevated temperature.

EFFECT: proposed is a new zeolite catalyst that has high stability in the process of propane dehydrogenation and makes it possible to simplify the separation of the target product, propylene.

4 cl, 2 tbl, 22 ex