METHODS OF PRODUCING PROPYLENE AND USED CATALYST SYSTEMS Russian patent published in 2020 - IPC C07C6/04 C07C11/06 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing propylene, comprising: reacting an olefin feedstock containing butene with ethylene, in the presence of a catalyst system comprising a metathesis catalyst MoO₃ with aluminum oxide, in reaction conditions sufficient to form a stream of product containing propylene, and reaction conditions include a reaction temperature of less than 250 °C, wherein the catalyst system contains an isomerisation catalyst MgO and a binder selected from aluminum oxide, silicon dioxide, clay, inorganic oxides and mixtures thereof, wherein the catalyst system has a weight ratio of the isomerisation catalyst to the metathesis catalyst of 0.5:1 to 0.25:1.

EFFECT: disclosed method avoids the use of high temperatures and increases output of the product, as well as longer service life of the catalyst.

11 cl, 3 dwg, 2 tbl, 3 ex