HIGH-TEMPERATURE SPINEL-BASED SHIFT REACTION CATALYSTS Russian patent published in 2007 - IPC B01J37/02 B01J23/86 B01J23/885 C01B3/16 

FIELD: shift reaction catalysts.

SUBSTANCE: invention relates to iron oxide-containing catalysts generally used for high-temperature shift reactions wherein gas stream containing water steam and carbon monoxide is passed over catalyst at temperature within a range of 350 to 550°C to convert carbon monoxide into carbon dioxide with simultaneous formation of hydrogen. Catalyst is prepared via precipitation of composition containing ferrous and ferric iron and chromium(III) with a base, ferrous iron being partly oxidized by an oxidant into ferric iron. Further formation of resulting precipitate into formed catalyst blocks is effected at temperature above 200°C. Invention also provides a high-temperature shift reaction process using above catalyst blocks.

EFFECT: avoided need of catalyst restoration stage resulting in improved catalyst strength and activity.

10 cl, 2 tbl, 2 ex