CATALYST FOR DEHYDROGENATION OF C-C-HYDROCARBONS Russian patent published in 2006 - IPC B01J23/26 B01J37/02 C07C5/333 

FIELD: organic chemistry, chemical technology, catalysts.

SUBSTANCE: invention describes a catalyst for dehydrogenation of (C₂-C₅)-hydrocarbons that comprises aluminum, chrome oxides, compound of modifying metal, alkaline and/or alkaline-earth metal. Catalyst comprises additionally silicon and/or boron compounds and as a modifying agent the proposed catalyst comprises at least one compound chosen from the following group: zirconium, titanium, iron, gallium, cobalt, molybdenum, manganese, tin. The catalyst is formed in the process of thermal treatment of aluminum compound of the formula Al₂O₃^. n H₂O wherein n = 0.3-1.5 and in common with compounds of abovementioned elements and shows the following composition, wt.-% (as measure for oxide): chrome oxide as measured for Cr₂O₃, 12-23; compound of a modifying metal from the group: Zr, Ti, Ga, Co, Sn, Mo and Mn, 0.1-1.5; silicon and/or boron compound, 0.1-10.0; alkaline and/or alkaline-earth metal compound, 0.5-3.5, and aluminum oxide, the balance. Catalyst shows the specific surface value 50-150 m²/g, the pore volume value 0.15-0.4 cm³/g and particles size 40-200 mcm. Also, invention describes a method for preparing this catalyst. Invention provides preparing the catalyst showing the enhanced strength and catalytic activity.

EFFECT: improved and valuable properties of catalyst.

12 cl, 2 tbl