METHOD OF PRODUCING "LIGHT" OLEFINS Russian patent published in 2024 - IPC C07C5/333 B01J23/28 B01J37/08 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing light olefins by cracking propane, which is a component of associated petroleum gas (APG), using catalysts based on neodymium molybdate Nd₂(MoO₄)₃ and ytterbium molybdate Yb₂(MoO₄)₃ with content of 0.10–0.50 wt.% of dopant of sodium ions obtained from neodymium nitrate hexahydrate Nd(NO₃)₃⋅6H₂O or ytterbium nitrate hexahydrate Yb(NO₃)₃⋅6H₂O and sodium molybdate dihydrate Na₂MoO₄⋅2H₂O, with subsequent calcination of the obtained precipitate in a muffle furnace at temperature of 700 °C for 3 hours. Method involves bringing the catalysts into contact with propane, which is fed at a volume rate of 1.25 ml/s at temperature of 500±10 °C and pressure of 0.1 MPa.

EFFECT: high conversion of propane and process output for light olefins while maintaining high selectivity; increased service life of the catalyst and simple regeneration, simplified process for the process of catalytic cracking of propane.

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