METHOD OF DEHYDROGENATING ISOPENTANE AND ISOPENTANE-ISOAMYLENE FRACTIONS Russian patent published in 2010 - IPC C07C11/10 C07C11/18 C07C5/333 B01J21/04 B01J23/42 B01J23/60 B01J23/62 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of dehydrogenating isopentane and isopentane-isoamylene fractions, carried out at atmospheric pressure in a water vapour medium via dehydrogenation-regeneration cycles in the fixed bed of a catalyst based on platinum and tin deposited on an aluminium-zinc spinel, characterised by that the catalyst used has average crystal size of 22-35 nm with the following content of components in wt %: platinum - 0.05-2.0, tin - 0.1-6.0, aluminium-zinc spinel - the rest. The dehydrogenation process is carried out at 560-620°C, feed space velocity of the material of 300-500 h^-1 in the presence of hydrogen and water vapour. The ratio material: hydrogen : water vapour equals 1 :0.5-2.0 :5-20 mol : mol : mol.

EFFECT: use of the method enables more efficient dehydrogenation of isopentane and isopentane-isoamylene fractions.

3 cl, 14 ex, 1 tbl