MODIFIED CATALYST FOR CONVERTING OXYGENATES INTO OLEFINS Russian patent published in 2015 - IPC B01J29/40 B01J37/28 C07C1/20 B01J29/06 

FIELD: chemistry.

SUBSTANCE: invention relates to a novel method of producing a phosphorus-containing catalyst, which includes the following steps: (a) depositing a phosphorus-containing compound on a zeolite, (b) calcining the modified zeolite, (c) treating the calcined zeolite obtained at step (b) with an aqueous solution or water to remove part, particularly at least 50 wt %, preferably at least 70 wt %, especially preferably 80-95 wt %, of phosphorus-containing components and optionally performing further calcination, (d) mixing the material obtained at step (c) with binder, (e) moulding the binder-zeolite mixture obtained at step (d), and (f) calcining the moulded material obtained at step (e), where the zeolite has a silicon to aluminium ratio ranging from 50 to 250. The invention also relates to a catalyst obtained using said method and use thereof in a method of producing lower olefins from methanol, dimethyl ether and/or mixtures thereof.

EFFECT: obtained catalyst has improved stability and provides higher conversion of the raw material.

20 cl, 1 dwg, 1 tbl, 6 ex