LIGHT PARAFFIN OXIDATIVE DEHYDROGENATION PROCESS Russian patent published in 2007 - IPC C07C5/333 B01J23/40 B01J23/64 C07C11/02 

FIELD: petrochemical processes.

SUBSTANCE: feed stream is passed with admixed oxygen and diluent through catalyst bed at 400-500°C and constant flow rate 50 mL/min, said catalyst being catalytic system for heterogeneous reactions and representing geometrically structured system including microfibers of high-silica fibrous carrier, which is characterized by presence in IR absorption band of hydroxyl groups with wave number ν=3620-3650 cm^-1 and half-width 65-75 cm^-1. The carrier has specific surface as measured according to BET method from heat desorption of argon S_Ar=0.5-30 m²/g, surface area as measured by alkali titration method S_Na=5-150 m²/g at ratio S_Na/S_Ar=5-50, and at least one active element, whose principal portion is composed in the form of charged either metallic, or bimetallic clusters characterized in UV-vis diffuse reflection spectrum by specific bands in the region 34000-42000 cm^-1 and ratio of integral intensity of band attributed to charged either metallic, or bimetallic clusters to integral intensity of band belonging to, respectively, either metallic, or bimetallic particles is not less than 1.0.

EFFECT: increased choice of oxidative dehydrogenation catalysts.

4 cl, 5 ex