METHOD OF PRODUCING C-C OLEFIN HYDROCARBONS AND CATALYST THEREFOR Russian patent published in 2014 - IPC C07C5/333 B01J23/26 B01J21/04 B01J21/10 B01J23/14 B01J23/06 B01J23/34 B01J38/12 

FIELD: chemistry.

SUBSTANCE: described is a method of producing C₃-C₅ olefin hydrocarbons via dehydrogenation of corresponding C₃-C₅ paraffin hydrocarbons or mixtures thereof in the presence of a catalyst which contains chromium oxide, zinc oxide, aluminium oxide and additionally a aluminium-magnesium spinel and at least tin oxide in amount of 0.1-3.0 wt %. Before the regeneration step, reaction products are removed from the catalyst by first passing C₁-C₅ hydrocarbons or mixtures thereof and then nitrogen through the catalyst. The catalyst contains chromium oxide, zinc oxide, aluminium oxide, aluminium-magnesium spinel and tin oxide, with the following ratio of components in terms of oxides, wt %: Cr₂O₃ - 10.0-30.0, ZnO - 10.0-40.0, SnO₂ - 0.1-3.0, MgO - 1.0-25.0, Al₂O₃ - the balance. The catalyst can further contain a manganese compound in amount of 0.05-5.0 wt %.

EFFECT: high efficiency of the process of producing olefin hydrocarbons.

3 cl, 1 tbl, 11 ex