FIELD: organic chemistry. SUBSTANCE: formic acid is prepared by gaseous oxidation of formaldehyde, oxygen-nitrogen mixture being used. The process is carried out at 110-180 C with the help of heterogeneous catalyst which contains 17.5-89.5 mass of V2O5 and 10.5-82.5 mass of TiO2. EFFECT: improves efficiency of method. 2 tbl
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