METHOD OF OBTAINING THE MICROSPHERIC CATALYTIC DEHYDROGENATION OF PARAFFIN C3-C5 HYDROCARBONS Russian patent published in 2017 - IPC B01J37/02 B01J37/10 B01J23/26 B01J23/04 

FIELD: chemistry.

SUBSTANCE: in accordance to the method, the aluminium oxide media-aluminium hydroxide is taken, solution of predecessor modifier-Silicon oxide is dosed, and conducting media, this solution impregnation after impregnation catalyst is dried, further dose aqueous solutions of the predecessors of the active substance and promoter-chromium oxide and potassium oxide, impregnation media spend specified solutions, its drying and calcination during 4-6 hours after impregnation of the active substance. As the alumina support, aluminium hydroxide with gibbsite structure is taken. Before applying the components, the calcination of source of aluminium hydroxide is held at a temperature of 450-1000°C for 40-120 minutes, then calcined media subjected to hydrothermal processing of sharp the ferry through the shirt during 1-5 hours at a ratio of water and solids in the range 1:1÷3:1 to obtain phase boehmite γ-AlO (OH) in mixtures with various aluminium oxides, receive a suspension in water media, conduct filtering received suspensions of the multiphase phase media boehmite γ-AlO (OH), and drying further modifications of the media spend, the active substance is carried out before applying promoter, calcination of catalyst after the drying operation is carried out at a temperature of 600-1000°C with the subsequent drawing of promoter.

EFFECT: increasing active centers of catalyst and partial suppression of acidic centres, formed on the surface of the substrate after application of the active ingredient.

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