METHOD OF OBTAINING OLEFINS Russian patent published in 2008 - IPC B01J23/42 B01J23/62 B01J23/78 B01J23/83 C10G11/02 C10G11/22 

FIELD: chemistry.

SUBSTANCE: description is given of a method of obtaining olefins. The method involves passing a mixture of a hydrocarbon and oxygen containing gas through a catalyst zone, which is capable of maintaining burning over the upper limit the inflammability of the fuel, with obtaining of the above mentioned olefin. The catalyst zone consists of at least, a first layer of catalyst and a second layer of catalyst, where the second catalyst layer is put in the process line after the first catalyst layer, has different content from the first layer and has general formula: M¹ _aM² _bM³ _cO_z, where M¹ is chosen from IIA, IIB, IIIB, IVB, VB, VIB, VIIB groups of lanthanides and actinoides, M² is chosen from IIA, IB, IIB, IIIB, IVB, VB, VIB groups, and M³ is chosen from IIA, IB, IIB, IIIB, IVB, VB, VIB and VIIIB groups, a, b, c and z represent atomic ratios of the M¹, M², M³ and O components respectively. The value of a lies in the interval from 0.1 to 1.0, the value of b lies in the interval from 0.1 to 2.0, the value of c lies in the interval from 0.1 to 3.0, and the value of z lies in the interval from 0.1 to 9.0. The catalyst zone has a perovskite type structure.

EFFECT: perfection of the method of obtaining olefins.

9 cl, 4 tbl, 1 dwg, 4 ex