CATALYST AND METHOD OF OBTAINING METHANOIC ACID Russian patent published in 2009 - IPC B01J23/22 B01J21/06 B01J23/16 C07C53/02 

FIELD: chemistry.

SUBSTANCE: present invention relates to vanadium-titanium oxide catalysts, used in production of methonoic acid through gas-phase oxidation of formaldehyde with oxygen and methods of obtaining methanoic acid using these catalysts. Described is a catalyst based on vanadium and titanium oxides, containing 7.0-50.0 wt % vanadium oxide and in form of granules with one or several through-holes and equivalent diametre of the granules defined by the ratio 6V/S, where V is the volume of the catalyst granule and S is the outer surface area of the catalyst granule. The equivalent diametre lies between 2.0 and 3.9 mm and mainly between 2.4 and 3.5 mm. Described also is a method of obtaining methanoic acid through oxidation of formaldehyde with oxygen in one or several serial pipe reactors in the presence of the above described catalyst.

EFFECT: increased catalyst activity and increased output of methanoic acid.

7 cl, 10 ex, 1 tbl