CATALYTIC SYSTEM FOR HETEROGENEOUS REACTIONS Russian patent published in 2007 - IPC B01J21/08 B01J23/38 B01J23/70 B01J23/14 

FIELD: organic synthesis catalysts.

SUBSTANCE: invention relates to novel catalysts that can be used, in particular, for selective hydrogenation of polyunsaturated hydrocarbons, deep oxidation of carbon monoxide, organic and organohalogene compounds, sulfur dioxide oxidation, selective chlorination and oxychlorination of hydrocarbons, nitrogen oxide reduction, and reuse of gaseous and liquid wastes. Catalytic system represents geometrically structured one including microfibers of high-silica fibrous carrier 5-20 μm in diameter, which is characterized by existence in IR spectrum of hydroxyl group spectral band having wave number ν=3620-3650 cm-1 and half-width 65-75 cm-1, by having specific surface S_Ar=0.5-30 m²/g as measured via BET method involving thermal desorption of argon, and at least one active element. In addition, carrier has specific surface value measured by alkali titration method S_Na=5-150 m²/g at S_Na/S_Ar ratio (5-50):1. Active element is of the nature capable of forming charged metallic or bimetallic clusters with specific bands in the region of 34000-42000 cm^-1 and ratio of integral intensity of band 34000-42000 cm^-1 (corresponding to charged metallic or bimetallic clusters) to integral intensity of band with maximum at 48000 cm^-1, corresponding, respectively, either to metallic or to bimetallic particles, at least 1.0.

EFFECT: increased catalytic activity, increased resistance of catalyst to deactivation and elevated selectivity thereof in heterogeneous reactions.

4 cl, 6 ex