CATALYST OF PYROLYSIS OF PROPANE-BUTANE HYDROCARBON MATERIAL IN LOWEST OLEFINS AND METHOD OF OBTAINING IT Russian patent published in 2008 - IPC B01J23/06 B01J27/16 B01J21/08 B01J37/02 B01J37/08 C10G11/04 

FIELD: chemistry.

SUBSTANCE: catalyst of pyrolysis of propane-butane hydrocarbon material with the formation of the ethylene and the propylene, which presents itself directly on the surface of the reactor of the ceramic catalytic film covering with a mass of 50-70 g/m², having the gross weight-composition, moll %: mixture ZnO and CdO - 20÷30, SiO₂ - 20÷40, P₂O₅ 40÷50 with heterogeneous chemical compound through the thickness of the coating. Also another method of obtaining the catalyst is described. It is obtained by processing the surface of the reactor by aqueous solutions or suspensions of the compounds of zinc, cadmium, silicon and phosphorus or their mixtures - ashes-gel method, drying of the coating at 80-100°C and heat processing at 200-400°C for the formation the ceramic catalytic film coating.

EFFECT: obtaining active and selective catalyst for pyrolysis of propane-butane hydrocarbon material without the formation of coke with a high output of ethylene and a low output of propylene.

2 cl, 1 tbl