METHOD FOR PRODUCTION OF PROPYLENE FROM PROPANE UNDER ACTION OF SUPERCRITICAL CO Russian patent published in 2022 - IPC C07C11/06 C07C5/333 C01B3/38 B01J23/26 C07C5/42 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for the production of propylene from propane during catalytic dehydration of C₃H₈ in the presence of CO₂ being in a supercritical state. A catalyst contains a carrier – silica gel with a specific surface of more than 180 m²/g, to which chromium oxide is applied. The amount of applied chromium oxide is 2-15 wt.% of the total weight of the catalyst. The process is carried out under supercritical conditions for CO₂ at pressure above 75 atm and temperature of 550-700°C, when a reaction mixture containing a mixture of CO₂ and propane taken in a molar ratio of 3÷20 respectively is supplied to a reactor, and speed of a reaction mixture flow is from 1.28 to 10.26 mmol/min.

EFFECT: catalyst efficiency by propylene is increased by 3 times.

1 cl, 2 ex, 5 dwg