VANADIUM-TITANIUM CATALYST PREPARATION METHOD Russian patent published in 2007 - IPC B01J37/03 B01J23/22 B01J21/06 B01D53/70 B01D53/56 C07D307/89 

FIELD: redox reaction catalysts.

SUBSTANCE: invention relates to methods for preparing vanadium-titanium oxide catalysts for redox reactions, e.g. for industrial processes of production of phthalic anhydride via oxidation of o-xylene, selective reduction nitrogen oxides, and detoxification of organochlorine compounds. Method of invention comprises following stages: providing titanyl sulfate solution; adding ammonia and then vanadium peroxide solution to titanyl sulfate solution or adding to the same vanadyl sulfate or oxalate and then ammonia solution; optionally ageing suspension resulting after mixing of solutions; filtration; and calcinations at 450^°C.

EFFECT: increased heat resistance of active chlorobenzene oxidation catalyst and reduced catalyst preparation time (10-12 h instead 72 h as in a known method).

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