FIELD: chemistry.
SUBSTANCE: invention relates to an improved method of obtaining acrolein from glycerol. Dehydration of glycerol is carried out in the presence of a catalyst based on zirconium oxide, consisting at least of: a) mixed zirconium oxide and at least of one metal M, where the said metal is selected from niobium and vanadium, b) zirconium oxide and at least one metal M oxide, where the said metal is selected from niobium, tantalum and vanadium, c) silicon oxide and mixed zirconium oxide and at least one metal M, where the said metal is selected from tungsten, cerium, manganese, niobium, tantalum, titanium, vanadium and silicon, d) titanium oxide, mixed zirconium oxide and at least one metal M, where the said metal is selected from tungsten, cerium, manganese, niobium, tantalum, titanium, vanadium and silicon. The invention also relates to a method of obtaining 3-(methylthio)propionic aldehyde from acrolein and to application of a catalyst, selected from the catalysts a), b), c) or d) for conversion of glycerol into acrolein.
EFFECT: method makes it possible to obtain acrolein by catalytic dehydration of glycerol in the presence of catalyst, which provides conversion of all initial glicerine and at the same time can be easily regenerated during short time without losing activity and selectivity and possesses a long service term.
13 cl, 4 dwg, 5 tbl, 18 ex
